Source: http://www.fcc.gov/print/node/47896
Timestamp: 2014-11-28 06:19:09
Document Index: 459322223

Matched Legal Cases: ['ARTS 1', '§ 153', '§ 52', 'arts 1', 'art 1', '§ 52', 'arts 1']

FCC Releases Telephone Numbering Resource Utilization Report
Numbering Resource Utilization in the United States NRUF Data as of June 30, 2010 Porting and Toll-Free Data as of September 30, 2010 Craig Stroup John Vu Industry Analysis and Technology Division Wireline Competition Bureau April 2013 This report is available for reference in the FCC's Reference Information Center, Courtyard Level, 445 12th Street, SW, Washington, DC. Copies may be purchased by contacting Best Copy and Printing, Inc., 445 12th Street, SW, Room CY-B402, Washington, DC, telephone (800) 378-3160, or via their website at www.bcpiweb.com [4]. The report can also be downloaded from the Wireline Competition Bureau Statistical Reports Internet site at www.fcc.gov/wcb/stats [5]. Contents TEXT Executive Summary ................................................................................................................................1 Findings ..................................................................................................................................................1 Background .............................................................................................................................................2 Analysis and Results ...............................................................................................................................4 Additional Information ...........................................................................................................................9 Technical Details ..................................................................................................................................10 TABLES 1. Number Utilization by Carrier Type as of June 30, 2010 ..............................................................12 2. Detail of Number Utilization: Non-rural Carriers (Reported at the Thousands-block Level).......12 3. Detail of Number Utilization: Rural Carriers (Reported at the NXX Level) ................................12 4. Telephone Number Utilization by State as of June 30, 2010 .........................................................13 5. Number of Carriers Reporting Numbering Resources as of June 30, 2010 ...................................14 6. Telephone Number Utilization by Area Code as of June 30, 2010 ................................................15 7. Assigned, Aging, and Available Telephone Numbers by Area Code as of June 30, 2010 ............20 8. Pooled Thousands-blocks as of June 30, 2010 ...............................................................................25 9. Increased Utilization and Telephone Numbers Saved due to Thousands-Block Pooling as of June 30, 2010 .........................................................................................................................26 10. Number Utilization for Specialized Non-geographic Area Codes as of June 30, 2010 .................26 11. Alternate Sources of NPA-NXX Assignments...............................................................................31 12. Utilization over Time .....................................................................................................................31 13. NPA-NXX Assignments, Returns, and Net Assignments ..............................................................32 14. Telephone Number Porting Activity Since Wireless Porting Started ............................................33 15. Telephone Numbers Remaining in the Porting Database at the End of Each Quarter ...................34 16. Numbers in the Porting Database by Quarter in Which They Were Most Recently Ported as of September 30, 2010 ...............................................................................................................35 17. Ports Between Carrier Types as of September 30, 2010 ................................................................36 18. Number of Carriers Porting or Receiving Ports as of September 30, 2010....................................37 19. Percentage of Numbers Ported as of June 30, 2010 .......................................................................38 20. Telephone Numbers Assigned for Toll-Free Service .....................................................................39 21. Telephone Numbers Assigned for 800 Toll-Free Service ..............................................................40 22. Telephone Numbers Assigned for 888 Toll-Free Service ..............................................................41 23. Telephone Numbers Assigned for 877 Toll-Free Service ..............................................................42 24. Telephone Numbers Assigned for 866 Toll-Free Service ..............................................................43 U.S. Federal Communications Commission Numbering Resource Utilization in the United States i 25. Area Codes by State (1947-2010) ..................................................................................................44 26. Area Code Assignments (1999-2009) ............................................................................................45 27. Number of Digits Necessary to Dial Local and Toll Calls from Wireline Phones as of June 2010 ...............................................................................................................................47 CHARTS 1. Incumbent LECs: Average Utilization Rates by Number of Thousands-blocks Held in a Rate Center ..............................................................................................................................27 2. Mobile Wireless: Average Utilization Rates by Number of Thousands-blocks Held in a Rate Center ..............................................................................................................................28 3. CLECs: Average Utilization Rates by Number of Thousands-blocks Held in a Rate Center .......29 4. Paging Carriers: Average Utilization Rates by Number of Thousands-blocks Held in a Rate Center ..............................................................................................................................30 5. NPA-NXX Assignments, Returns, and Net Assignments ..............................................................32 U.S. Federal Communications Commission Numbering Resource Utilization in the United States ii Numbering Resource Utilization in the United States NRUF Data as of June 30, 2010 Porting and Toll-Free Data as of September 30, 2010 Executive Summary This is the Federal Communications Commission’s report on numbering resource utilization in the United States.1 In this report, we summarize an ongoing systematic collection of comprehensive data on the utilization of telephone numbers within the United States. The underlying information was acquired from telecommunications carriers holding numbering resources and was analyzed as part of our ongoing assessment of the efficacy of numbering resource optimization measures prescribed by the Commission’s Numbering Resource Optimization (NRO) Orders.2 Findings As of June 30, 2010:  Overall, 47.9% of all telephone numbers were assigned to end users.  The overall utilization rate for Incumbent Local Exchange Carriers (LECs) was 47.1%, down from 47.3% six months earlier.  The overall utilization rate for Mobile Wireless carriers was 66.8%, up from 66.7% six months earlier.  The overall utilization rate for Competitive LECs was 33.3%, down from 34.0% six months earlier.  Thousands-block pooling has made it unnecessary to distribute about 483 million telephone numbers.  Since wireless number portability began on November 24, 2003, wireline customers have moved over 94 million telephone numbers to new wireline carriers and wireless customers moved almost 87 million telephone numbers to new wireless carriers. Over 4 million wireline telephone numbers have been moved to wireless carriers and about 275,000 wireless numbers have been moved to wireline carriers.  In the second quarter of 2010, carriers returned 670,000 telephone numbers to the NANPA. 1 The previous edition of this report, with data as of December 31, 2009, was released in January 2011. 2 See Numbering Resource Optimization, CC Docket No. 99-200, Report and Order and Further Notice of Proposed Rulemaking, 15 FCC Rcd 7574 (2000) (First NRO Order); Numbering Resource Optimization, CC Docket Nos. 99-200, 96-98, Second Report and Order, Order on Reconsideration in CC Docket No. 96-98 and CC Docket No. 99-200, and Second Further Notice of Proposed Rulemaking in CC Docket No. 99-200, 16 FCC Rcd 306 (2000) (Second NRO Order); Numbering Resource Optimization, CC Docket Nos. 99-200, 96-98, 95-116, Third Report and Order and Second Order on Reconsideration in CC Docket No. 96-98 and CC Docket No. 99-200, 17 FCC Rcd 252 (2001) (Third NRO Order); Numbering Resource Optimization, CC Docket Nos. 99-200, 96-98, 95-116, Fourth Report and Order in CC Docket No. 99-200 and CC Docket No. 95-116, and Fourth Further Notice of Proposed Rulemaking in CC Docket No. 99-200, 18 FCC Rcd 12472 (2003) (Fourth NRO Order). U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 1
 In the third quarter of 2010, carriers returned 770,000 telephone numbers to the NANPA. Background The United States uses ten-digit telephone numbers, which are organized in accordance with the North American Numbering Plan (NANP).3 The NANP divides the country into separate geographic areas called numbering plan areas (NPAs), more commonly called area codes. Calls between these areas are generally dialed using the three-digit area code, followed by a seven-digit local telephone number. When the NANP was established in 1947, only 78 area codes were assigned to telecommunications carriers in the United States. Only 36 new codes were added through 1989. But the rate of activation increased dramatically in the 1990s, when 109 new area codes were activated.4 Because the remaining supply of unassigned area codes was diminishing, and because a premature exhaust of area codes imposes significant costs on consumers, the Commission in 1999 initiated a proceeding to ensure that the limited numbering resources are used efficiently and thereby slow telephone number exhaust. In the First NRO Order, in 2000, the Commission established the requirement that telecommunications carriers controlling numbering resources for the purpose of providing services to their customers are required to file data on numbering resource utilization and forecasts twice a year. Utilization data as of December 31 are due to the North American Numbering Plan Administrator (NANPA) by February 1, and utilization data as of June 30 are due by August 1.5 The data are submitted using FCC Form 502, the Numbering Resource Utilization/Forecast (NRUF) form. 6 The NANPA compiles the submitted NRUF information into a database and provides that database to the Commission. The new NRUF-based information in this report is number utilization as of June 30, 2010. The information in this report reflects all submissions and corrections received by the NANPA through October 13, 2010. 7 Historically, local telephone companies received geographic numbers in blocks of 10,000. These ten-thousands blocks of numbers are often called NXXs, or central office codes, and are identifiable as the first three digits of a seven-digit telephone number.8 To improve the efficiency with which numbers are used, the Commission’s NRO Orders established “thousands-block number pooling,” where an NXX is broken into ten sequential blocks of 1,000 numbers.9 Carriers may then be required to donate unused or underutilized blocks to the Pooling Administrator, which then assigns those thousands-blocks to other 3 The North American Numbering Plan is used in the United States and its territories, and in Canada, Bermuda, and many Caribbean nations, including Anguilla, Antigua and Barbuda, the Bahamas, Barbados, British Virgin Islands, Cayman Islands, Dominica, Dominican Republic, Grenada, Jamaica, Montserrat, St. Kitts and Nevis, St. Lucia, St. Vincent and the Grenadines, Trinidad and Tobago, and the Turks and Caicos Islands. The data contained in this report are all limited to the United States and its overseas territories. 4 A database containing information about each area code is available at http://www.nanpa.com/npa/allnpas.zip [6]. 5 First NRO Order, 15 FCC Rcd at 7603, para. 67. The NANPA currently is NeuStar, Inc. 6 FCC Form 502 and most other FCC forms can be downloaded via http://www.fcc.gov/formpage.html [7], 7 The NANPA’s database is continually updated because not all carriers file by the prescribed date, and because carriers sometimes file updated information throughout the year. 8 That is, a ten-thousands block is the block of 10,000 telephone numbers that have the same area code and the same NXX. 9 Pooling for wireline and wireless carriers started in November 2002. For a discussion of this requirement, see Fourth NRO Order, 18 FCC Rcd at 12474-77, paras. 5–14. U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 2
carriers in need of numbers.10 This effectively allows the assignment of numbers in blocks of 1,000 rather than 10,000. Most carriers are required to report their number utilization information at the thousands-block level so that the Commission can evaluate the efficacy of telephone number pooling. However, carriers that meet the statutory definition of “rural telephone company”11 and operate in non-pooling areas submit their number utilization information at the ten-thousands block (NXX) level. In this report, we present utilization data for four types of carriers:12  Incumbent LECs  Competitive LECs  Mobile Wireless Carriers  Paging Carriers Carriers report on numbering resources in the following six categories:  Assigned  Intermediate  Reserved  Aging  Administrative  Available An assigned number is one that is in use by an end-user customer. Intermediate numbers are those that one carrier has made available for use by another carrier (or to a non-carrier) so that the numbers may then be assigned to an end user. Reserved numbers are those that are being held by the service provider at the request of an end user for future use. Aging numbers are those that are being held out of use by the carrier for a period of time after the end user that last used them discontinues service. Administrative numbers include test numbers and other numbers used for network management purposes. Available numbers are numbers that are generally available for assignment to customers.13 Some carriers receive telephone numbers from other carriers. When this occurs, the carrier that received its numbers from another carrier (as opposed to directly from the NANPA) is required to report utilization data for those numbers, and to mark those numbers as having been received from other carriers.14 10 The current Pooling Administrator is NeuStar, Inc., which is also the NANPA. 11 See 47 U.S.C. § 153(37). 12 Carriers classified themselves in a variety of ways on their NRUF forms. With one exception, each carrier type was aggregated into one of these four categories for the purposes of this report. The exception involves carriers calling themselves interexchange carriers. These carriers reported data for area codes 500 and 900, which are summarized in Table 10 of this report. Therefore, there was no need to classify interexchange carriers as one of the four carrier types listed above. Also, carriers may provide multiple types of services but report using a single operating company number (OCN). Where this occurs, this may cause a problem because carriers must indicate only their primary line of business on the NRUF form. Thus, for example, there is some potential that some numbers are classified as mobile wireless but are really used for paging. Only small carriers seem to do this, so the effects of this misclassification should be minor. 13 For precise definitions of these categories, see 47 C.F.R. § 52.15. 14 This means that sometimes more than one carrier can report utilization data for the same thousands-block (or ten-thousands block). The NRUF form contains separate sections for reporting utilization data for numbers received from another carrier and numbers received directly from the NANPA. Some carriers that receive numbers only U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 3
The vast majority of numbering resources reported were part of geographic area codes. That is, the numbers were part of area codes that are associated with specific regions of the United States or another country. For instance, area code 406 is associated with Montana, and area code 506 is associated with New Brunswick, Canada. Carriers are also required to report on utilization of some non-geographic area codes, such as 500 numbers and 900 numbers (which are described later in this report). Carriers use other types of non-geographic numbering resources as well: millions of numbers are used to provide toll-free services using non-geographic area codes such as 800, 888, 877 and 866. These numbering resources are managed separately. Analysis and Results Table 1 shows the total quantity of telephone numbers reported by telecommunications carriers and the number of ten-thousands blocks (NXXs) that were reported as of June 30, 2010. Table 1 also shows the quantity of telephone numbers that carriers reported for each of the six categories described above. The percentages for each of the six categories are provided as well. Carriers reported usage data on 142,625 NXXs. This is up from the 141,738 NXXs in the previous filing (data as of December 31, 2009). As the NANPA calculates that 144,692 NXXs have been assigned to U.S. carriers,15 this round of submissions appears to have garnered usable information on over 98% of the numbering resources assigned to carriers in the United States. However, although the reporting level is high, many carriers had not provided usable utilization data by October 13, 2010, which was the cut-off date for inclusion in this report. Carriers filing NRUF forms reported that about 677 million telephone numbers were assigned to end users, and that 643 million were available for assignment. These 643 million available numbers do not include any telephone numbers in NXXs that had not yet been assigned to a carrier. As more NXXs are assigned to carriers by the NANPA, and more area codes are opened, more numbers will become available. Intermediate, reserved, aging and administrative categories collectively account for another 94 million telephone numbers of the NXXs assigned to carriers. The quantity of incumbent LEC assigned numbers is down slightly, reflecting the decreasing number of incumbent LEC lines.16 The quantity of mobile wireless assigned numbers is up, reflecting that sector’s growth. The quantity of CLEC assigned numbers continues to rise, in part, because of telephone service provided through voice over Internet protocol (VoIP). Table 2 presents statistics for numbers located in ten-thousands blocks for which carriers must report the utilization information at the thousands-block level. As previously explained, carriers that do not meet the statutory definition of a rural carrier are required to report in this manner. Table 3 presents statistics for rural carriers, which are required to report only at the ten-thousands block level.17 As might be expected, overall utilization rates are lower in rural areas (about 14% of from other carriers use the incorrect section of the form, however, so within the database it can appear that more than one carrier reported data for the same block of numbers. 15 The NANPA lists the codes that have been issued on its website at: http://www.nanpa.com/reports/reports_cocodes_assign.html [8]. 16 See Table 1 of the most recent Local Telephone Competition report at http://www.fcc.gov/wcb/iatd/comp.html [9]. 17 See First NRO Order, 15 FCC Rcd at 7604-05, para. 71. A small number of rural carriers may operate in areas with pooling. As all carriers in pooling areas are required to report at the thousands-block level, rural carriers in pooling areas, if any, should be included in Table 2 rather than Table 3. U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 4
telephone numbers are assigned to end users) than in more urban areas (about 50% of telephone numbers are assigned to end users). Table 4 shows utilization statistics on a state-by-state basis. As might be expected, states that are relatively rural and have low population densities have a lower percentage of numbers that have been assigned to end-user customers than in more urban, populous states. Again, carriers report for only those numbers that have been assigned to them, so the quantity of available numbers does not include any of the NXXs that had not yet been assigned to a carrier. Table 5 shows the number of carriers reporting telephone number utilization data for each state. Carriers are required to report their NRUF data at the OCN level.18 Carriers typically obtain one or more OCNs per state in which they operate. The number of carriers in each state is determined by counting the number of OCNs reported in each state. Table 6 shows utilization statistics on an area code-by-area code basis. The table also shows the total number of OCNs reported in each area code. Again, carriers report for only those numbers that have been assigned to them, so the quantity of available numbers does not include any of the NXXs in the state that had not yet been assigned to a carrier. Table 7 shows actual quantities of assigned, aging, and available numbers for wireline carriers (incumbent LECs and CLECs) and for mobile wireless carriers on an area code-by-area code basis. The information in Table 7 is useful for at least two reasons. First, while there is no information on the number of working telephone lines in each area code, Table 7 provides at least some indication of what these numbers are. For several reasons, however, the number of working lines per area code cannot be perfectly divined from this information. Although mobile wireless carriers typically assign one geographic telephone number to each mobile wireless telephone, some also assign telephone numbers to other wireless devices. Similarly, wireline subscribers do not necessarily match the number of wireline phone numbers. For instance some wireline customers want multiple telephone numbers associated with a smaller number of lines. This is common when the customer has a PBX. Other wireline customers, especially those expecting many inbound calls, such as to a help line, want a single telephone number that serves many lines. Thus, the quantity of telephone numbers in an area code provides only a rough guide to the number of lines in service in each area code. Second, the information in Table 7 provides the only information available for examining churn.19 After a customer disconnects from a carrier’s network and chooses not to port the number to another carrier, that carrier will hold that number out of circulation (“age” the number) for up to ninety days if the customer was a residential subscriber, and up to one year if the customer was a business subscriber. Therefore, the quantity of aging numbers gives some indication of the number of customers that have disconnected from the carrier’s network in the previous three months to a year. For several reasons, aging numbers, however, do not give a perfect indication of churn. Aside from not measuring numbers ported to another carrier, not all carriers age their numbers for the full time allowed. In particular, where carriers cannot immediately obtain new numbers from the NANPA or the pooling administrator because of area code rationing, and the carriers have no other available numbers to assign to end users, carriers may assign end users telephone numbers that have not been aged for the full time that the state regulatory commissions have prescribed. (Thousands-block pooling alleviates this problem by making more numbering resources available.) Moreover, as mentioned in the previous paragraph, wireline carriers do not always issue one telephone number per line. Thus, as with line counts, churn rates can only be roughly estimated from the data in Table 7. 18 See First NRO Order, 15 FCC Rcd at 7594, para. 41. Carriers obtain OCNs from the National Exchange Carrier Association. 19 Churn is the rate at which customers change carriers or disconnect service. U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 5
Table 8 focuses on telephone number pooling. It shows the number of thousands-blocks that carriers have received from the Pooling Administrator, the total number of thousands-blocks in telephone rate centers where pooling exists,20 and the percentage of those thousands-blocks that are pooled. A thousands-block is potentially poolable when 90% or more of the numbers are classified as available for assignment. Pooling is required in the top 100 Metropolitan Statistical Areas (MSAs).21 Pooling also occurs in other areas where a state regulatory commission has exercised delegated authority to require pooling.22 Carriers also have voluntarily implemented pooling in certain areas. The Commission established an initial national roll-out schedule for thousands-block number pooling for wireline carriers, which was completed in December 2003,23 and required most mobile wireless telephony carriers to participate in that schedule starting in August 2003.24 Table 9 examines the efficacy of thousands-block pooling by showing the utilization of the thousands-blocks that were distributed by the Pooling Administrator and the utilization rate that would have resulted had whole NXXs been issued.25 Overall, if whole NXXs had been issued instead of individual thousands-blocks, utilization within those blocks would have been about 22%. With pooling, however, utilization was 64%, about a three-fold increase. Another way of measuring the benefit of pooling is examining the quantity of telephone numbers saved through pooling. With pooling, 257 million telephone numbers were distributed to carriers in pooling areas. Had there been no pooling, over 740 million telephone numbers would have been distributed to the carriers. Thus, about 483 million telephone numbers have been saved through thousands-block pooling. Table 10 shows utilization data for two specialized non-geographic area codes: 500 and 900. Area code 500 is used for “follow me” service, which, among other things, can be used to route an incoming call to different phone numbers, depending on the time of day. Area code 900 is used for information services where the caller is not charged the normal long distance rates set by the caller’s long distance carrier, but usually is charged much higher prices that are preset by the call’s recipient. 20 A rate center is a geographic area used to determine distances and prices for local and long distance calls. 21 The composition of MSAs may change over time. If a rate center is part of a top 100 MSA at any time after 1990, then the FCC generally requires number pooling. See Fourth NRO Order, 18 FCC Rcd at 12473, para. 2. 22 Most recently, the Commission granted authority to the Idaho, Alabama, and Wisconsin commissions to expand pooling to areas outside of the top 100 MSAs. See Numbering Resource Optimization; Implementation of the Local Competition Provisions of the Telecommunications Act of 1996, WC Docket 07-118, CC Docket Nos. 99-200, 96-98, Order, 22 FCC Rcd 16081 (2007). The Commission also has sought comment on whether it should delegate authority to all states to implement mandatory pooling at their discretion. See Numbering Resource Optimization, CC Docket No. 99-200, Order and Fifth Notice of Proposed Rulemaking, 21 FCC Rcd 1833 (2006). 23 See The Common Carrier Bureau Announces The First Quarter Schedule For National Thousands-Block Number Pooling, CC Docket No. 99-200, Public Notice, 17 FCC Rcd 103 (2001). See also Numbering Resource Optimization, CC Docket No. 99-200, Order, 17 FCC Rcd 7347 (2002). 24 See Fourth NRO Order, 18 FCC Rcd at 12473, para 1; 68 F.R, 43009, July 21, 2003. Thus, the Commission required wireless telephone carriers to participate in thousands-block number pooling (starting on August 20, 2003) somewhat before they were required to begin deploying local number portability (by November 24, 2003). 25 Calculating the utilization rate had whole NXXs been issued was a 4-step process: 1) the number of thousands-blocks that a carrier held in a rate center was determined; 2) that number was rounded up to the next ten, which is the number of thousands-blocks the carrier would have received if it had received whole NXXs; 3) the number in step 2 was multiplied by 1,000 to calculate the total quantity of telephone numbers the carrier would have had in the rate center; and 4) the number of telephone numbers that the carrier actually has in that rate center is then subtracted from the quantity calculated in step 3. U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 6
Charts 1 through 4 focus on utilization rates as a function of the number of thousands-blocks that carriers of different types hold within a local geographic area.26 These charts show average utilization rates of incumbent LECs, mobile wireless carriers, CLECs, and paging carriers, respectively. We used rate centers as our measure of local geographic area because thousands-blocks are assigned to carriers on a rate-center basis. Carriers serving densely populated areas may need more than one thousands-block to provide service. In these densely populated areas, carriers should generally be able to achieve higher utilization rates than carriers serving less densely populated areas, where one thousands-block (or in many rural areas, a ten-thousands block) may be used to serve just a few customers. Table 11 focuses on NPA-NXX assignment information. There are three different databases that contain sources of NPA-NXX assignment information: the NANPA’s NRUF database, the NANPA’s NANP Administration System (NAS) database of NPA-NXX assignments, and the Local Exchange Routing Guide (LERG).27 For a variety of reasons, the databases are not identical. Timing is a large factor in the differences. For instance, during an area code split, a carrier will maintain both the old and new NPA-NXXs in its systems during the phase called permissive dialing.28 After permissive dialing ends, the carrier should remove the old NPA-NXXs from its systems. During permissive dialing, some carriers report utilization data for both the old and the new NPA-NXXs. Further, some carriers may not remove the old NPA-NXXs from their systems promptly after permissive dialing ends, and may therefore report utilization data on both the old and the new NPA-NXXs. Also, carriers sometimes delay updating the LERG after an NPA-NXX has been removed from their switch or when the carrier has given the NPA-NXX back to the NANPA. Thus, the NRUF database, the NANPA assignment database, and the LERG may not be identical. Table 11 shows the number of NPA-NXXs that appear in the three databases. Table 12 shows the percentage of numbers that have been assigned to end users over time. The utilization rate for incumbent local exchange carriers is slowly declining and mobile wireless and CLEC utilization rates are generally increasing. The utilization rate for paging continues to drop because the paging market is shrinking. Table 13 shows, on a quarterly basis, the number of NXX assignments made by the NANPA, the number of NXXs that have been returned to the NANPA, and the number of net NXX assignments to carriers. The table shows that fewer NXXs generally are being issued each quarter, and that carriers continue to return unneeded NPA-NXXs to the NANPA for reassignment. 26 The points in Chart 1 were calculated using a three-step process. First, thousands-blocks were grouped depending on the number of thousands-blocks held by a carrier within a rate center. Second, the number of thousands-blocks held in a rate center was rounded to the nearest ten, to help protect the confidentiality of the data. Third, the average utilization rates were calculated for each of the groups (i.e., from the group of 10 thousands-blocks per rate center through the group of 1,000 thousands-blocks per rate center). For example, for all instances where a carrier reported from 5 to 14 (which round to 10) thousands-blocks in a rate center, the average utilization rate was calculated. A similar average utilization rate was calculated for all instances where, for a carrier in a rate center, the number of thousands-blocks in a rate center was rounded to 20, 30, and so on through 1,000. To preserve carrier confidentiality, some data points have been collapsed into a single data point. For example, if there were only two companies with 350 thousands-blocks in a rate center, and another two companies with 360 thousands-blocks in a rate center, those data points were collapsed. This way, no carrier-specific data are released. 27 The NANPA’s assignment information can be found online: http://www.nanpa.com/reports/reports_cocodes_assign.html [8]. The analysis in Table 11 examines only those codes that NANPA marked “assigned” (i.e., this study does not examine those codes marked “protected”, “reserved”, “unassignable”, or “vacant”). The LERG is published monthly by Telcordia Technologies. 28 During permissive dialing, a phone number may be called by using either the old or the new NPA. U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 7
Tables 14 through 16 display information on telephone number porting. All telephone number porting information in this report is derived from the local number portability database, which was designed solely for the purpose of routing calls.29 There are several reasons that the quantity of ported numbers in the database at any given time does not equal the sum of numbers ported in prior months. When consumers who have already ported their telephone numbers do so again, the porting database retains only the most recent porting activity for those numbers. Consumers can also port their numbers back to the original carrier.30 When this happens, it is counted as a port even though the number drops out of the porting database.31 Also, carriers sometimes port blocks of numbers to other carriers before reassigning them in the LERG. Once the numbers are reassigned, they can be dropped from the porting database. Table 14 shows, on a quarterly basis, the quantities of telephone numbers that have been ported since wireless porting started on November 24, 2003. The table shows that most porting activity is intramodal, that is between two landline carriers or between two mobile carriers. Many telephone numbers are ported so that they can be used with VoIP-based telephony. Because almost all VoIP providers get their numbers from CLECs, telephone numbers that are ported for VoIP-based service are included in the wireline-to-wireline totals. Table 15 shows the quantity of telephone numbers in the porting database at the end of each quarter. Table 16 is based on ports in the database as of September 30, 2010, and shows the quarter in which the numbers were ported. Table 17 shows the number of ports in the database on a state-by-state basis, and Table 18 shows the number of carriers involved in porting on a state-by-state basis. Table 19 shows the percentage of assigned numbers that were ported.32 Customers may port their numbers multiple times, and in doing so, they may change the nature of their service (wireline versus wireless), so there are two possible methods of determining whether a number was ported from a wireline carrier or not. The first method is to use the type of carrier that is currently porting the number away from itself, and the second is to determine which type of carrier originally held the number. The choice of methodologies depends on what is being measured. Because it is useful to know porting patterns for numbers as they are currently being used, Tables 14 and 19 use the porting carrier’s type to establish whether a wireline or wireless number is being ported. For the rest of the tables, the original carrier’s type is used to determine the porting carrier’s type. This is done so that the number of wireless subscribers can be better determined.33 For instance, in order to properly calculate the number of wireless units at a particular point in time using telephone number data, one can take the quantity of wireless assigned numbers as reported on NRUF forms, add the number of wireline to wireless ports and subtract the number of wireless to wireline ports. 29 NeuStar, Inc. currently is the portability administrator and operates seven different porting databases. Commission staff combines information from these databases into a single database. 30 When a customer who is using a ported number discontinues service entirely, the ported number also goes back to the original carrier. 31 Area code splits can cause a number that was at one time ported from Carrier A to Carrier B to appear to be ported from Carrier A to Carrier B at a later date than actually occurred, as the database record must be updated to reflect the new area code. When this happens, the old porting record also disappears from the database. 32 Paging carriers are not required to port numbers. 33 According to NRUF rules, a number that is ported to another carrier is classified as assigned. In order to avoid double counting, the recipient of the ported number does not report ported numbers in NRUF. See 47 C.F.R. § 52.15 (f)(1)(v). U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 8
Tables 20 through 24 show information about toll-free numbers in the North American Numbering Plan. AT&T introduced toll-free service in 1967. The Commission changed procedures for routing toll-free calls on May 1, 1993 to make toll-free numbers "portable." This change enabled customers to switch service providers yet retain their toll-free numbers. The quantity of assigned toll-free numbers grew rapidly, and new toll-free calling codes were opened to meet the demand. In March 1996, calling code 888 was placed into service. The third toll-free calling code (877) went into effect April 4, 1998, and the fourth toll-free calling code (866) went into effect July 29, 2000. The Wireline Competition Bureau authorized Database Service Management Inc. (DSMI), which maintains the Toll-Free Service Management System for the United States and Canada, to open the 855 toll-free area code on October 1, 2010.34 In the event that another toll-free code is needed, the 844 code would be opened. As of September 30, 2010, there were over 28 million toll-free numbers assigned. Tables 21 through 24 show the growth of each individual toll-free code over the past decade: 800, 888, 877, and 866, respectively. Table 25 shows the current list of area codes, the state or territory they serve, and the month the code was opened. Table 26 shows area code assignments since January 1999, along with the month the code was added, and the code that served the area previously. Table 27 shows how dialing patterns differ from state to state. For instance, in some states, callers making local calls within an area code are required to dial only the 7-digit phone number. In other states, callers making local calls must dial the ten-digit phone number (area code plus the phone number). Finally, in some states, local callers must dial a “1” before dialing the area code plus the phone number. Each state’s public utilities commission (or public service commission) determines the calling pattern for each area code in their state.35 For both local and domestic toll calls, there are two basic types of calls: those within an area code and those between area codes. Table 27 shows the dialing patterns for all four types of calls. The last column of Table 27 indicates whether all toll calls in that state require callers to dial a “1” before the telephone number. Additional Information Additional information too lengthy to include in this report is contained on the Commission’s website.36 The first set of additional information lists the more than 2,700 filers. The list includes the service provider’s name, its parent name, and its OCN. The second set of information shows, by carrier type and by rate center, the number of assigned telephone numbers and the number of thousands-blocks reported in that rate center. Some information has been redacted (asterisked out), to prevent the potential release of non-public data. The information 34 See http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-10-1117A1.pdf [10]. 35 The dialing patterns for area codes are listed in the area code database, which can be found at http://www.nanpa.com/area_codes/index.html [11]. 36 This report and additional numbering information can be found at http://www.fcc.gov/wcb/iatd/number.html [12]. All of the Industry Analysis & Technology Division’s reports are available on the web, and are conveniently categorized. See http://www.fcc.gov/wcb/stats [5]. U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 9
also includes the Metropolitan Statistical Area/Primary Metropolitan Statistical Area in which the rate center resides.37 The pooling information submitted by NeuStar, Inc. is also available, and includes the NPA, NXX, X (block number), recipient carrier, date of assignment for the block, and other information about the block. NeuStar, Inc. submitted pooling data as of October 15, 2010. For consistency with the latest available NRUF data, only blocks whose assignment was effective by June 30, 2010 were used in creating the tables for this report. Technical Details The following material provides technical details on the data and procedures used in this analysis. With respect to Tables 1 through 3, the reader should note that the number of unique NXXs for each carrier type does not add up to the total number of unique NXXs.38 This discrepancy occurs when multiple carriers report data for the same numbering resource. In addition, some carriers reported at the thousands-block level and other carriers reported at the NXX level for the same NXX. Further, when all mobile wireless devices were assigned telephone numbers and subscribers generally carried one mobile device for making voice calls, NRUF provided reasonably accurate measures of mobile wireless telephone subscribership. However, consumers are now more likely to use more than one mobile device – particularly non-voice devices, such as Internet access devices (e.g., wireless modem cards, netbooks, and mobile Wi-Fi hotspots), e-readers, tablets, and telematics systems – that commonly are assigned telephone numbers. In addition, certain mobile broadband providers do not assign telephone numbers to some or all of the devices on their networks. This trend became noticeable around 2005, and since that time, the wireless NRUF data has reflected the number of individual subscribers plus a share of the mobile wireless connections or connected devices.39 In the past, when numbers were transferred from an incumbent LEC to another carrier, these numbers were classified as “assigned” because those numbers could not be used elsewhere in the incumbent LEC’s own system. According to the Commission’s standardized definitions, however, these numbers are classified as “intermediate” numbers. It appears that some large carriers have not reported these numbers as intermediate numbers. Because, in many instances, we were unable to match submissions that report intermediate numbers with submissions that report numbers as being received from another carrier, we had to create filters to ensure that numbers were not double counted. Where a Regional Bell Operating Company (RBOC) has acquired a carrier with CLEC services in the RBOC's operating region, the numbering resources of the acquired CLEC that are in the RBOC's operating region are counted as incumbent LEC resources. Where the acquired CLEC provides services outside of the acquirer's operating region, the numbering resources are treated as CLEC resources. For ease of comparison, Charts 1 through 4 plot utilization rates only when there were 1,000 or fewer thousands-blocks in a rate center. Some incumbent LECs reported more than 1,000 unique thousands-blocks in a single rate center. The average utilization rates in these instances (where the carrier has more than 1,000 thousands blocks in a rate center) were the same as the instances where the carrier has just fewer than 1,000 thousands blocks in a rate center. Therefore, the charts show only the data 37 The rate center’s V&H coordinates from the LERG were used to determine in which MSA/PMSA the rate center resided. If the rate center is not in an MSA/PMSA, then the MSA/PMSA variable is left blank. 38 In some instances, more than one carrier reported numbering utilization data for the same NPA-NXX. Tables 1-3 report on the number of unique NPA-NXXs that were reported by each carrier type and by the industry as a whole. 39 See Fifteenth CMRS Report pages 8 – 9. http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-11-103A1.doc [13]. U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 10
where the carriers reported up to 1,000 thousands-blocks within a rate center. This allows a linear scale to be used. In some instances, we observed that some CLECs had a large number of thousands-blocks in a single rate center. Although most CLECs do not have enough end-user lines in a rate center to warrant having so many thousands-blocks in that rate center, there are at least two reasons that a CLEC would do so. First, some CLECs provide service to unified messaging services, such as e-fax.40 These services use large quantities of numbers.41 Also, VoIP providers generally obtain NANP telephone numbers for their customers by partnering with a local exchange carrier, such as a CLEC, through a commercial arrangement rather than obtaining them directly from a numbering administrator. * * * * We invite users of this information to provide suggestions for improved data collection and analysis by using the attached customer response form, e-mailing comments to craig.stroup@fcc.gov [14], john.vu@fcc.gov [15], or calling the Industry Analysis and Technology Division at (202) 418-0940 (for TTY, call (202) 418-0484). 40 Unified messaging services allow end users to receive multiple types of messages (such as voice mail and faxes) at one phone number. Typically, these messages are then digitized and e-mailed to the end user. Because the end user does not need to answer the call personally, the messages can be sent to any phone number in the United States. Thus, unified messaging service providers can operate efficiently by obtaining a large number of thousands blocks in a single rate center. 41 Carriers assigning numbers to unified messaging services are instructed to report numbers as “intermediate” until the numbers are assigned by the unified messaging service providers to end users. Some carriers have assigned large quantities of numbers to unified messaging services but may not have received information back from the unified messaging company as to whether those numbers had been assigned to end users. This may explain why some carriers reported dozens of NXXs in a single rate center, yet classified all those numbers as intermediate rather than assigned. U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 11
Number Utilization by Carrier Type as of June 30, 2010
Total Unique Carrier Type
(Thousands of telephone numbers)
273,048 14,823 4,511 11,851 14,692 261,003 579,928 67,451 Mobile Wireless
293,710 1,135 927 14,340 4,583 124,793 439,488 58,714 CLEC
105,718 11,136 4,914 7,788 1,578 186,422 317,555 52,558 Paging
4,082 554 498 567 200 70,591 76,492 5,812 All Reporting Carriers
676,558 27,648 10,849 34,546 21,053 642,809 1,413,463 142,6252
All Reporting Carriers
Detail of Number Utilization: Non-rural Carriers (Reported at the Thousands-block Level)
264,651 14,201 3,606 11,266 14,250 214,525 522,498 61,728 Mobile Wireless
291,856 1,082 798 14,166 4,442 118,258 430,603 57,874 CLEC
105,134 11,102 4,743 7,750 1,528 178,810 309,068 51,832 Paging
3,818 309 419 533 154 65,068 70,302 5,241 All Reporting Carriers
665,459 26,695 9,566 33,716 20,374 576,661 1,332,471 135,0552
Detail of Number Utilization: Rural Carriers (Reported at the NXX Level)
8,397 621 905 586 443 46,478 57,430 5,742 Mobile Wireless
1,854 53 129 174 142 6,535 8,886 881 CLEC
584 34 171 37 49 7,612 8,487 845 Paging
264 245 79 33 45 5,523 6,189 571 All Reporting Carriers
11,099 952 1,283 830 679 66,148 80,992 8,0172
Source: Numbering Resource Utilization/Forecast Reports data filed with NeuStar, Inc. as of October 13, 2010 (98% of NXXs reported).
1 Includes only telephone numbers in NXXs assigned to carriers and therefore available for assignment to customers. Does not include any numbers in NXXs that have not yet been assigned to carriers.2 Unduplicated total.
Note: Figures may not add due to rounding. Where an RBOC has acquired a carrier with CLEC services in the RBOC's operating region, the numbering resources of the acquired CLEC that are in the RBOC's operating region are counted as incumbent LEC resources. Where the acquired CLEC provides services outside of the acquirer's operating region, the numbering resources are treated as CLEC resources.
Numbering Resource Utilization in the United States 12
Telephone Number Utilization by State as of June 30, 2010
9,534 41.4
813 3.5
134 0.6
629 2.7
495 2.2
11,398 49.6
23,002 Alaska
1,553 26.3
4,094 69.4
5,900 American Samoa
27 68.7
13,410 60.8
288 1.3
302 1.4
7,058 32.0
22,039 Arkansas
5,221 36.2
411 2.8
209 1.4
8,332 57.7
14,427 California
81,166 51.5
4,182 2.7
795 0.5
4,109 2.6
3,604 2.3
63,596 40.4
157,452 Colorado
12,549 58.0
7,618 35.2
21,628 Connecticut
7,979 52.6
324 2.1
6,193 40.9
15,159 Delaware
2,707 57.2
104 2.2
1,826 38.6
4,736 District of Columbia
4,502 73.4
161 2.6
1,291 21.0
6,136 Florida
39,142 53.4
2,523 3.4
420 0.6
3,070 4.2
1,461 2.0
26,653 36.4
73,269 Georgia
19,842 47.6
1,952 4.7
244 0.6
1,329 3.2
868 2.1
17,454 41.9
41,689 Guam
237 33.2
456 64.1
712 Hawaii
2,833 56.6
1,806 36.1
5,007 Idaho
2,994 44.5
119 1.8
121 1.8
204 3.0
3,164 47.0
6,731 Illinois
28,879 45.4
710 1.1
592 0.9
1,365 2.1
31,307 49.2
63,613 Indiana
11,636 41.6
543 1.9
129 0.5
544 1.9
404 1.4
14,744 52.7
28,000 Iowa
7,171 34.5
284 1.4
260 1.3
256 1.2
191 0.9
12,640 60.8
20,802 Kansas
5,424 31.8
97 0.6
164 1.0
10,640 62.3
17,073 Kentucky
8,059 37.1
121 0.6
413 1.9
12,111 55.7
21,743 Louisiana
8,886 40.5
82 0.4
638 2.9
10,932 49.8
21,961 Maine
2,597 41.0
147 2.3
115 1.8
3,302 52.1
6,341 Maryland
15,172 57.5
10,036 38.0
26,393 Massachusetts
20,472 53.2
534 1.4
929 2.4
285 0.7
16,053 41.7
38,512 Michigan
21,030 40.8
402 0.8
28,419 55.1
51,588 Minnesota
12,136 42.3
276 1.0
424 1.5
15,277 53.3
28,674 Mississippi
4,838 29.8
392 2.4
72 0.4
278 1.7
10,314 63.6
16,229 Missouri
11,632 39.1
650 2.2
579 1.9
253 0.9
16,465 55.4
29,727 Montana
1,754 27.1
88 1.4
4,468 69.1
6,468 Nebraska
3,712 34.9
77 0.7
112 1.1
6,586 61.9
10,634 Nevada
5,533 55.8
367 3.7
3,469 35.0
9,908 New Hampshire
3,344 45.8
176 2.4
3,490 47.8
7,302 New Jersey
22,107 53.5
979 2.4
311 0.8
17,469 42.3
41,327 New Mexico
3,813 48.3
132 1.7
212 2.7
118 1.5
3,559 45.1
7,890 New York
46,887 57.3
2,181 2.7
655 0.8
30,550 37.3
81,822 North Carolina
19,030 49.3
1,372 3.6
1,166 3.0
653 1.7
15,991 41.4
38,582 North Dakota
1,270 21.5
84 1.4
4,461 75.5
5,911 Northern Marianas Is
56 21.6
175 67.2
23,902 46.0
1,127 2.2
174 0.3
1,161 2.2
24,985 48.1
51,996 Oklahoma
6,760 35.0
11,386 59.0
19,300 Oregon
7,869 50.8
178 1.1
255 1.6
355 2.3
243 1.6
6,602 42.6
15,502 Pennsylvania
28,671 48.8
425 0.7
905 1.5
1,334 2.3
413 0.7
27,043 46.0
58,791 Puerto Rico
4,691 58.1
71 0.9
213 2.6
2,951 36.5
8,079 Rhode Island
3,123 59.5
1,924 36.7
5,246 South Carolina
8,653 46.8
774 4.2
396 2.1
8,033 43.4
18,496 South Dakota
1,475 24.8
4,285 72.1
5,939 Tennessee
13,314 48.7
1,052 3.8
249 0.9
845 3.1
536 2.0
11,328 41.5
27,324 Texas
50,743 46.1
2,637 2.4
540 0.5
2,642 2.4
2,160 2.0
51,391 46.7
110,113 Utah
6,420 56.6
259 2.3
194 1.7
4,233 37.3
11,337 Vermont
2,279 42.2
2,886 53.4
5,401 Virgin Islands
47 13.2
97 27.0
360 Virginia
19,124 59.6
202 0.6
240 0.7
258 0.8
11,326 35.3
32,074 Washington
15,689 56.8
435 1.6
236 0.9
696 2.5
10,072 36.4
27,633 West Virginia
2,888 43.4
115 1.7
68 1.0
3,429 51.5
10,559 39.1
339 1.3
206 0.8
15,192 56.3
27,002 Wyoming
1,096 31.1
66 1.9
2,241 63.5
3,527 Totals
676,558 47.9
27,648 2.0
10,849 0.8
34,546 2.4
21,053 1.5
642,810 45.5
1,413,465 Source: Numbering Resource Utilization/Forecast Reports data filed with NeuStar, Inc. as of October 13, 2010
1 Includes only telephone numbers in NXXs assigned to carriers and therefore available for assignment to customers. Does not include any numbers in NXXs that have not yet been assigned to carriers.
Numbering Resource Utilization in the United States 13
Number of Carriers Reporting Numbering Resources as of June 30, 20101
Incumbent LEC2 Mobile Wireless2
32 18 34 9 93 Alaska
24 13 5 0 41 American Samoa
0 1 0 0 1 Arizona
18 13 29 6 66 Arkansas
32 9 19 5 65 California
25 16 66 11 117 Colorado
35 18 31 6 91 Connecticut
3 8 25 3 38 Delaware
1 8 24 5 38 District of Columbia
1 7 29 4 41 Florida
14 16 58 7 94 Georgia
36 18 54 6 114 Guam
2 4 2 0 8 Hawaii
2 6 6 1 15 Idaho
24 16 23 6 69 Illinois
56 18 53 5 132 Indiana
43 17 47 4 111 Iowa
157 17 67 3 244 Kansas
46 15 33 4 98 Kentucky
21 20 45 3 89 Louisiana
22 15 31 5 73 Maine
23 9 23 3 58 Maryland
2 11 42 4 59 Massachusetts
5 8 34 3 50 Michigan
40 19 49 5 112 Minnesota
93 13 67 2 175 Mississippi
20 14 29 5 68 Missouri
47 17 38 7 109 Montana
21 10 18 0 49 Nebraska
48 16 23 2 89 Nevada
13 12 30 4 59 New Hampshire
12 10 23 4 49 New Jersey
3 9 49 4 65 New Mexico
19 17 22 3 61 New York
42 9 53 5 109 North Carolina
30 14 41 5 89 North Dakota
36 10 18 1 65 Northern Marianas Is
1 2 0 0 3 Ohio
42 20 54 2 116 Oklahoma
44 18 24 3 89 Oregon
33 10 38 3 84 Pennsylvania
40 21 53 7 120 Puerto Rico
1 6 6 1 14 Rhode Island
1 8 16 3 28 South Carolina
27 12 39 1 78 South Dakota
46 10 23 1 80 Tennessee
28 18 43 5 94 Texas
65 30 71 12 177 Utah
18 15 23 2 58 Vermont
10 9 14 3 36 Virgin Islands
1 4 0 0 5 Virginia
20 15 51 5 90 Washington
25 12 45 6 88 West Virginia
8 14 18 5 45 Wisconsin
90 21 43 7 161 Wyoming
16 14 13 0 43 Unduplicated Totals
1,379 296 1,595 80 3,339 Source: Numbering Resource Utilization/Forecast Reports data filed with NeuStar, Inc. as of October 13, 20101 Company numbers determined by counting operating company numbers (OCNs). Carriers typically obtain at least one OCN per state in which they do business. Thus, carriers with multiple OCNs are counted multiple times with the exception that is noted following Table 3. 2 Carriers occasionally misclassify the type of service that they provide. For instance, the CLEC operations of incumbent LECs are occasionally classified as incumbent LEC operations.
Numbering Resource Utilization in the United States 14
Telephone Number Utilization by Area Code as of June 30, 2010
Area Code State/Jurisdiction
Area Code Opened
January-47
57.6% 0.6% 0.5% 2.6% 0.8% 37.8% 49 202
District of Columbia January-47
73.4% 1.1% 1.1% 2.6% 0.7% 21.0% 43 203
55.4% 3.0% 0.8% 2.3% 1.7% 36.7% 37 205
48.4% 4.1% 0.5% 2.9% 2.7% 41.3% 43 206
64.8% 0.8% 0.5% 2.5% 2.1% 29.3% 40 207
41.0% 0.9% 2.3% 1.9% 1.8% 52.1% 58 208
44.5% 1.8% 1.8% 1.9% 3.0% 47.0% 69 209
January-58
46.5% 3.2% 0.3% 1.9% 2.3% 45.7% 45 210
November-92
64.4% 3.8% 0.4% 3.3% 1.3% 26.8% 38 212
73.9% 0.0% 1.7% 2.3% 1.4% 20.7% 32 213
43.0% 1.3% 0.6% 3.5% 2.1% 49.4% 55 214
64.2% 0.5% 0.5% 2.9% 2.5% 29.4% 51 215
60.1% 0.1% 1.6% 2.2% 0.9% 35.1% 43 216
51.4% 0.8% 0.3% 3.4% 1.5% 42.7% 35 217
32.6% 1.4% 0.2% 1.1% 1.3% 63.4% 48 218
23.7% 2.1% 0.8% 0.9% 0.7% 71.9% 70 219
43.4% 2.0% 0.5% 2.0% 1.5% 50.7% 35 224
55.0% 1.7% 1.2% 3.0% 1.3% 37.8% 33 225
48.1% 4.1% 0.4% 3.3% 3.4% 40.7% 36 228
32.2% 1.5% 0.3% 1.8% 2.8% 61.3% 32 229
28.2% 3.9% 0.3% 1.9% 0.7% 65.0% 41 231
28.7% 0.8% 0.6% 1.1% 0.9% 67.9% 42 234
27.3% 4.8% 0.1% 1.3% 0.6% 65.9% 24 239
54.6% 0.2% 0.4% 4.4% 0.5% 39.9% 27 240
58.1% 0.7% 0.3% 4.1% 0.4% 36.3% 47 248
51.0% 0.6% 0.5% 2.4% 1.2% 44.3% 43 251
39.9% 3.0% 0.7% 2.0% 2.8% 51.5% 43 252
40.7% 1.3% 0.1% 3.5% 0.6% 53.7% 36 253
57.7% 2.9% 0.7% 3.2% 1.3% 34.1% 39 254
32.9% 1.9% 0.3% 2.3% 2.6% 60.1% 43 256
44.2% 3.6% 0.8% 3.6% 1.6% 46.2% 43 260
39.8% 2.1% 0.6% 1.2% 1.8% 54.4% 35 262
42.2% 1.5% 0.8% 1.6% 0.8% 53.2% 43 267
44.3% 0.6% 0.7% 4.0% 0.5% 50.0% 45 269
37.4% 0.8% 0.9% 1.8% 1.5% 57.6% 52 270
32.1% 3.1% 0.4% 1.6% 1.0% 61.8% 51 276
35.3% 0.8% 0.2% 3.1% 0.9% 59.7% 41 281
52.6% 2.6% 0.2% 3.1% 1.3% 40.2% 45 301
59.2% 0.2% 0.5% 2.1% 0.9% 37.0% 48 302
57.2% 0.7% 0.8% 2.2% 0.6% 38.6% 40 303
65.3% 0.4% 1.1% 2.7% 2.8% 27.6% 39 304
43.8% 1.6% 0.8% 1.7% 1.0% 51.0% 44 305
55.4% 6.4% 0.6% 4.3% 2.8% 30.5% 42 307
31.1% 0.5% 0.9% 2.1% 1.9% 63.5% 43 308
January-55
17.2% 0.7% 0.4% 0.8% 1.1% 79.8% 52 309
30.6% 0.9% 0.6% 1.3% 1.5% 65.2% 56 310
November-91
62.5% 1.0% 0.5% 2.8% 2.5% 30.8% 48 312
56.6% 1.9% 0.4% 2.3% 1.9% 36.9% 39 313
48.3% 1.6% 0.3% 2.9% 1.0% 45.9% 41 314
58.6% 2.8% 0.5% 2.8% 1.4% 33.9% 31 315
41.2% 1.4% 1.0% 1.6% 0.6% 54.1% 46 316
48.8% 3.3% 0.9% 1.9% 1.2% 43.8% 29 317
54.5% 2.3% 0.5% 2.8% 1.6% 38.4% 43 318
35.5% 2.8% 0.2% 1.9% 3.8% 55.7% 46 319
41.1% 1.6% 0.8% 1.4% 1.6% 53.5% 66 320
25.9% 1.5% 0.8% 1.1% 0.4% 70.3% 66 321
54.3% 4.4% 0.7% 6.9% 1.2% 32.5% 42 323
53.7% 1.0% 0.4% 3.9% 2.4% 38.6% 54 325
29.0% 1.0% 1.1% 1.3% 1.9% 65.7% 35 330
46.8% 1.6% 0.3% 2.1% 1.2% 48.1% 43 U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 15
42.3% 2.1% 2.5% 4.2% 0.9% 48.0% 22 334
January-95
31.8% 3.1% 0.3% 1.9% 1.8% 61.0% 62 336
50.2% 4.1% 0.5% 3.0% 1.1% 41.1% 57 337
36.4% 3.0% 0.4% 2.0% 2.2% 56.0% 41 339
41.3% 2.7% 0.8% 1.3% 0.9% 53.0% 20 340
46.8% 4.3% 8.2% 13.2% 0.6% 27.0% 5 347
71.6% 3.6% 0.3% 5.4% 0.7% 18.5% 38 351
26.0% 0.0% 0.1% 2.5% 0.1% 71.4% 1 352
47.7% 2.2% 0.1% 3.6% 1.3% 45.1% 42 360
51.7% 1.0% 0.9% 2.4% 1.7% 42.3% 63 361
26.1% 2.2% 0.1% 1.4% 1.4% 68.8% 35 385
57.2% 5.5% 0.2% 1.2% 1.3% 34.7% 5 386
45.5% 5.0% 0.2% 2.7% 1.2% 45.4% 39 401
59.5% 0.5% 0.9% 2.0% 0.5% 36.7% 29 402
42.8% 0.7% 0.4% 1.2% 0.9% 54.0% 58 404
61.8% 5.8% 0.6% 3.2% 3.3% 25.3% 39 405
47.9% 3.8% 0.2% 2.2% 1.0% 44.9% 42 406
27.1% 0.5% 1.4% 0.9% 1.0% 69.1% 49 407
April-88
54.0% 4.2% 0.6% 4.6% 1.5% 35.2% 42 408
January-59
58.6% 2.5% 0.3% 2.1% 1.6% 34.7% 50 409
32.7% 5.6% 0.2% 2.0% 1.4% 58.1% 39 410
October-91
59.5% 0.3% 1.0% 2.1% 0.9% 36.2% 41 412
50.1% 0.4% 1.3% 2.7% 1.0% 44.5% 36 413
55.9% 1.1% 1.3% 1.8% 0.5% 39.4% 37 414
57.4% 1.8% 0.2% 2.7% 1.5% 36.4% 31 415
54.6% 2.2% 0.7% 2.4% 1.5% 38.7% 52 417
January-50
30.8% 2.8% 0.3% 1.5% 0.9% 63.6% 51 419
36.1% 5.0% 0.4% 1.9% 1.6% 55.0% 67 423
46.8% 2.9% 0.5% 3.0% 1.2% 45.6% 54 424
43.5% 6.0% 1.7% 3.6% 0.5% 44.8% 42 425
61.3% 3.1% 0.4% 2.2% 2.6% 30.4% 38 430
11.5% 40.2% 8.0% 0.2% 3.5% 36.7% 13 432
33.5% 3.1% 0.4% 1.6% 1.5% 59.8% 26 434
47.7% 1.3% 0.8% 3.4% 0.8% 46.0% 35 435
31.5% 1.4% 1.2% 1.2% 1.4% 63.3% 55 440
49.2% 1.6% 0.4% 2.0% 0.7% 46.0% 42 442
0.0% 0.0% 0.0% 0.0% 0.0% 0.0% 0 443
52.7% 0.5% 0.4% 3.7% 0.4% 42.5% 44 469
55.1% 0.8% 1.1% 2.7% 1.1% 39.3% 47 470
41.6% 0.0% 0.0% 0.0% 0.0% 58.4% 3 475
3.6% 0.0% 0.0% 0.0% 0.3% 96.2% 3 478
40.8% 2.4% 0.2% 2.7% 1.2% 52.7% 45 479
41.6% 2.8% 0.4% 1.5% 1.2% 52.4% 39 480
73.1% 1.5% 0.9% 3.8% 1.5% 19.2% 34 484
42.0% 1.0% 2.2% 2.2% 0.2% 52.4% 51 501
46.2% 3.3% 0.3% 1.8% 2.7% 45.7% 35 502
47.2% 5.2% 0.5% 2.8% 2.5% 41.8% 34 503
60.4% 1.3% 0.8% 2.7% 1.9% 33.0% 56 504
48.2% 4.3% 0.3% 4.4% 3.5% 39.4% 31 505
60.1% 0.4% 1.7% 3.3% 2.0% 32.5% 37 507
January-54
22.6% 0.9% 2.2% 0.8% 0.6% 72.9% 86 508
59.4% 0.5% 1.8% 2.3% 1.0% 35.0% 41 509
50.6% 0.8% 1.6% 2.5% 1.5% 43.1% 54 510
50.3% 2.7% 0.4% 2.5% 2.0% 42.0% 43 512
60.0% 3.1% 0.6% 2.6% 2.1% 31.6% 46 513
59.1% 0.7% 0.3% 2.8% 1.3% 35.8% 34 515
51.0% 1.2% 1.8% 1.3% 1.4% 43.3% 56 516
January-51
58.2% 0.2% 0.6% 2.3% 0.9% 37.7% 40 517
37.5% 0.4% 0.5% 1.5% 1.1% 59.0% 61 518
49.0% 1.5% 1.1% 2.4% 0.9% 45.3% 48 U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 16
58.3% 0.6% 1.0% 3.1% 1.4% 35.7% 42 530
37.3% 7.1% 0.2% 1.5% 1.5% 52.4% 55 534
0.0% 0.0% 0.0% 0.0% 90.0% 10.0% 1 540
51.9% 0.8% 0.7% 2.5% 1.0% 43.2% 54 541
39.9% 0.9% 2.4% 1.8% 1.2% 53.8% 58 551
76.2% 0.7% 0.6% 3.0% 0.4% 19.2% 18 559
43.6% 4.9% 0.2% 2.5% 2.5% 46.4% 40 561
57.6% 5.4% 0.7% 4.9% 2.4% 29.1% 40 562
49.7% 0.9% 0.5% 2.9% 3.6% 42.4% 53 563
36.4% 1.4% 0.6% 1.7% 0.7% 59.2% 57 567
20.3% 4.2% 0.1% 1.0% 0.3% 74.1% 35 570
43.3% 1.3% 2.8% 2.3% 0.8% 49.6% 53 571
67.9% 1.7% 0.5% 3.2% 0.7% 26.0% 39 573
32.1% 1.3% 0.4% 1.5% 0.5% 64.1% 46 574
41.4% 2.4% 0.4% 1.5% 1.2% 53.2% 41 575
32.4% 1.1% 1.6% 1.8% 0.9% 62.2% 46 580
18.7% 2.5% 0.2% 0.9% 0.9% 76.8% 48 585
51.5% 1.3% 2.9% 1.7% 0.5% 42.1% 38 586
43.7% 0.5% 0.4% 2.0% 0.6% 52.8% 38 601
32.1% 2.6% 0.4% 1.8% 2.5% 60.5% 46 602
63.8% 0.4% 0.6% 3.9% 1.3% 30.1% 32 603
45.8% 0.2% 3.1% 2.4% 0.8% 47.8% 49 605
24.8% 0.5% 0.7% 1.0% 0.9% 72.1% 80 606
28.0% 1.4% 0.6% 1.5% 2.9% 65.6% 42 607
39.6% 1.5% 0.5% 1.3% 0.4% 56.7% 33 608
40.8% 0.7% 1.3% 1.3% 1.4% 54.5% 74 609
54.7% 0.5% 0.5% 1.9% 0.6% 41.8% 44 610
56.9% 0.1% 2.7% 1.7% 0.7% 37.9% 55 612
65.0% 0.9% 0.4% 2.1% 1.8% 29.8% 42 614
57.2% 1.4% 0.5% 2.9% 2.0% 36.0% 38 615
55.0% 5.0% 0.7% 3.5% 2.6% 33.2% 44 616
49.4% 0.7% 0.6% 1.8% 0.9% 46.6% 44 617
62.8% 0.3% 1.7% 2.6% 1.0% 31.7% 39 618
33.1% 0.7% 0.7% 1.3% 1.4% 62.8% 54 619
55.2% 2.3% 0.4% 2.9% 2.4% 36.8% 51 620
18.7% 3.1% 0.8% 0.9% 0.4% 76.0% 62 623
71.8% 0.8% 1.1% 4.5% 2.4% 19.3% 32 626
53.1% 1.7% 0.5% 2.7% 2.4% 39.6% 54 630
50.8% 1.2% 1.3% 2.2% 1.0% 43.5% 35 631
52.5% 0.1% 0.5% 2.8% 0.5% 43.6% 39 636
41.2% 1.5% 0.8% 1.9% 0.4% 54.2% 32 641
27.3% 1.3% 0.4% 0.9% 0.4% 69.7% 66 646
78.5% 1.8% 0.6% 4.3% 0.7% 14.1% 40 650
47.4% 3.3% 0.4% 2.0% 1.3% 45.5% 45 651
66.7% 0.2% 0.6% 2.2% 1.4% 28.8% 47 657
29.3% 9.0% 4.3% 0.7% 0.5% 56.2% 23 660
15.1% 1.2% 0.6% 1.0% 0.3% 81.8% 48 661
47.9% 3.4% 0.3% 2.4% 2.6% 43.5% 54 662
26.8% 2.6% 0.5% 1.5% 1.2% 67.2% 50 670
Northern Mariana Isl.July-97
21.6% 0.0% 10.8% 0.4% 0.0% 67.2% 3 671
33.2% 0.0% 0.3% 2.1% 0.2% 64.1% 8 678
53.6% 3.4% 1.3% 5.5% 1.6% 34.6% 51 681
3.9% 0.0% 0.3% 1.4% 0.1% 94.3% 8 682
51.2% 1.9% 0.5% 2.7% 2.2% 41.6% 34 684
68.7% 0.0% 1.9% 1.1% 2.0% 26.3% 1 701
21.5% 0.6% 0.6% 0.5% 1.4% 75.5% 65 702
64.2% 3.3% 0.4% 5.2% 0.9% 26.1% 38 703
69.6% 0.1% 0.6% 2.5% 0.6% 26.6% 43 704
54.7% 5.1% 0.5% 3.1% 2.2% 34.3% 45 706
44.4% 3.0% 0.6% 2.3% 1.8% 47.9% 78 U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 17
44.2% 3.8% 1.0% 1.7% 1.9% 47.4% 48 708
November-89
42.6% 0.7% 1.8% 2.4% 0.9% 51.8% 35 712
18.6% 1.3% 2.4% 1.1% 0.5% 76.2% 105 713
59.3% 2.7% 0.4% 2.3% 1.2% 34.1% 41 714
56.9% 1.3% 0.4% 3.1% 2.7% 35.6% 55 715
28.2% 1.0% 0.6% 0.9% 0.8% 68.6% 91 716
53.1% 1.5% 1.2% 2.7% 0.9% 40.7% 35 717
56.4% 0.9% 1.2% 1.9% 0.9% 38.7% 45 718
62.6% 0.1% 1.0% 3.2% 1.4% 31.6% 36 719
49.9% 0.3% 1.3% 3.1% 1.6% 43.8% 54 720
74.0% 1.3% 0.6% 3.9% 1.6% 18.6% 33 724
38.0% 1.2% 0.6% 2.3% 0.6% 57.3% 55 727
59.4% 0.1% 0.9% 3.4% 3.0% 33.2% 39 731
29.2% 2.7% 2.2% 2.6% 1.6% 61.6% 37 732
55.0% 0.5% 0.7% 2.3% 0.7% 40.8% 41 734
46.4% 0.6% 0.6% 1.7% 0.7% 50.0% 51 740
35.9% 2.4% 0.2% 1.7% 1.1% 58.8% 49 747
10.3% 2.8% 0.0% 0.0% 0.0% 86.8% 4 754
64.4% 1.2% 0.1% 2.5% 1.3% 30.5% 13 757
64.2% 0.4% 0.8% 2.9% 0.7% 30.9% 30 760
49.5% 3.3% 0.9% 2.8% 2.9% 40.7% 67 762
9.3% 4.2% 0.0% 0.5% 0.0% 85.8% 15 763
61.3% 0.1% 0.7% 2.2% 1.3% 34.4% 52 765
31.5% 1.8% 0.2% 1.4% 1.0% 64.0% 58 769
20.5% 1.1% 0.1% 1.7% 1.5% 75.1% 19 770
52.9% 9.0% 0.3% 3.2% 2.5% 32.1% 43 772
51.2% 4.5% 0.4% 3.5% 3.2% 37.3% 37 773
53.1% 1.0% 0.8% 4.5% 0.8% 39.8% 35 774
34.9% 1.6% 0.8% 2.2% 0.6% 59.9% 34 775
40.8% 4.5% 0.3% 1.6% 1.7% 51.1% 48 779
35.9% 0.6% 7.3% 4.2% 0.3% 51.6% 21 781
47.4% 0.3% 0.9% 2.5% 0.5% 48.4% 38 785
23.0% 3.4% 0.3% 0.9% 0.9% 71.5% 59 786
67.6% 1.3% 0.8% 6.1% 1.2% 23.0% 38 787
59.6% 0.7% 0.7% 2.6% 1.1% 35.2% 14 801
69.0% 0.8% 0.9% 2.8% 1.9% 24.6% 32 802
42.2% 0.3% 2.0% 1.1% 0.9% 53.4% 36 803
47.5% 5.3% 0.7% 2.5% 2.3% 41.7% 57 804
June-73
60.2% 0.7% 1.3% 3.4% 1.0% 33.4% 33 805
48.1% 1.8% 0.5% 1.9% 2.6% 45.1% 61 806
25.6% 2.4% 0.2% 1.3% 1.6% 68.8% 47 808
56.6% 0.3% 0.4% 3.0% 3.7% 36.1% 15 810
December-93
37.2% 0.5% 0.8% 1.8% 2.0% 57.7% 40 812
37.3% 1.3% 0.6% 2.1% 1.6% 57.1% 56 813
January-53
61.2% 0.1% 0.9% 3.4% 2.5% 32.0% 40 814
42.4% 1.2% 0.4% 1.3% 0.8% 53.9% 48 815
41.2% 1.1% 0.6% 1.4% 1.2% 54.5% 63 816
48.0% 2.8% 0.4% 2.5% 1.2% 45.0% 46 817
50.8% 1.4% 0.5% 2.3% 2.7% 42.2% 50 818
January-84
55.6% 1.7% 0.5% 3.0% 2.1% 37.1% 53 828
43.6% 3.0% 0.6% 2.4% 2.3% 48.1% 44 830
21.6% 1.2% 0.2% 1.1% 0.8% 75.1% 47 831
39.8% 7.3% 0.3% 1.6% 2.1% 49.0% 41 832
62.4% 0.8% 0.6% 4.3% 1.1% 30.6% 41 843
45.0% 3.0% 0.3% 2.8% 2.3% 46.5% 50 845
45.8% 0.8% 0.6% 2.7% 0.7% 49.4% 51 847
58.0% 0.8% 1.5% 2.0% 0.9% 36.8% 37 848
48.0% 0.5% 0.1% 2.7% 0.5% 48.2% 23 850
39.8% 4.0% 0.2% 3.6% 1.1% 51.3% 53 856
47.0% 0.6% 0.5% 2.3% 0.6% 49.2% 42 U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 18
47.4% 0.3% 0.2% 3.1% 1.0% 48.1% 30 858
54.7% 2.8% 0.6% 2.9% 2.3% 36.7% 43 859
43.9% 1.7% 0.7% 1.8% 1.6% 50.2% 41 860
49.9% 1.6% 0.5% 1.9% 1.1% 45.1% 34 862
54.8% 1.3% 1.0% 3.5% 0.9% 38.4% 34 863
41.0% 0.4% 0.6% 3.0% 2.1% 52.9% 37 864
48.1% 4.3% 0.8% 3.4% 1.7% 41.7% 41 865
53.1% 5.5% 1.1% 2.8% 2.3% 35.3% 35 870
25.7% 2.5% 0.3% 1.1% 0.5% 69.7% 44 872
37.7% 21.2% 0.0% 1.3% 0.0% 39.8% 7 901
60.7% 4.3% 0.8% 4.4% 3.0% 26.9% 32 903
November-90
36.4% 4.2% 1.2% 2.3% 2.3% 53.6% 59 904
July-65
54.2% 5.4% 0.6% 3.9% 2.6% 33.3% 41 906
18.2% 0.6% 0.8% 0.5% 0.2% 79.8% 25 907
26.3% 1.4% 0.5% 1.6% 0.8% 69.4% 41 908
46.2% 0.5% 0.5% 2.0% 1.1% 49.8% 45 909
56.5% 2.2% 0.7% 3.2% 3.1% 34.4% 54 910
44.8% 2.6% 1.5% 3.3% 1.5% 46.3% 44 912
38.6% 2.8% 0.4% 2.6% 3.1% 52.5% 53 913
53.4% 1.8% 0.3% 2.6% 1.7% 40.2% 43 914
52.2% 0.2% 0.8% 2.3% 0.9% 43.7% 41 915
57.5% 2.0% 0.2% 3.8% 6.0% 30.5% 28 916
57.4% 1.8% 0.4% 2.9% 2.3% 35.2% 51 917
January-92
57.6% 0.4% 0.3% 1.6% 0.3% 39.8% 33 918
38.8% 3.2% 0.3% 1.7% 1.1% 54.9% 64 919
56.0% 4.4% 2.1% 2.9% 2.1% 32.6% 41 920
35.1% 1.5% 0.9% 1.3% 1.2% 60.1% 66 925
44.0% 3.4% 0.6% 2.1% 2.3% 47.5% 43 928
40.6% 3.4% 2.2% 1.9% 0.9% 51.0% 54 931
39.2% 2.2% 0.8% 1.8% 0.9% 55.1% 48 936
29.7% 1.8% 0.3% 1.9% 0.7% 65.7% 38 937
42.0% 2.4% 0.3% 1.7% 0.8% 52.8% 45 938
0.0% 0.0% 0.0% 0.0% 0.0% 100.0% 1 939
42.7% 1.2% 2.2% 2.7% 0.9% 50.3% 9 940
28.7% 2.1% 0.2% 1.7% 4.1% 63.2% 56 941
52.1% 0.2% 0.8% 5.1% 2.1% 39.8% 42 947
89.1% 3.5% 0.0% 0.0% 0.1% 7.2% 6 949
58.4% 2.2% 0.5% 2.8% 2.2% 33.9% 52 951
63.0% 2.1% 0.7% 3.6% 3.2% 27.4% 49 952
57.2% 0.2% 0.4% 2.0% 1.2% 39.1% 48 954
56.5% 6.1% 0.7% 4.4% 2.6% 29.7% 41 956
46.1% 3.1% 0.1% 3.4% 2.9% 44.4% 30 970
42.7% 1.1% 1.5% 2.2% 1.5% 51.1% 64 971
54.3% 1.9% 3.7% 3.2% 0.9% 35.9% 30 972
53.2% 1.6% 0.6% 2.2% 2.1% 40.1% 49 973
56.0% 0.3% 0.9% 2.7% 0.8% 39.3% 47 978
48.0% 0.7% 1.6% 2.7% 0.6% 46.5% 41 979
27.7% 1.4% 0.4% 1.3% 1.8% 67.3% 40 980
55.9% 1.2% 1.8% 1.9% 2.3% 36.8% 24 985
37.0% 3.0% 0.7% 3.6% 2.3% 53.4% 35 989
27.6% 0.7% 0.8% 1.0% 1.2% 68.7% 52 Source: Numbering Resource Utilization/Forecast Reports data filed with NeuStar, Inc. as of October 13, 2010. Area code information is from NeuStar, Inc.'s website.
Numbering Resource Utilization in the United States 19
Assigned, Aging, and Available Telephone Numbers by Area Code as of June 30, 2010
(in thousands except OCNs)
Wireline (Incumbent LECs and CLECs)
2,539 131 1,769 39 1,610 55 522 7 202
3,234 83 718 32 1,246 77 194 7 203
2,590 107 2,113 27 1,704 75 330 8 205
1,621 81 1,700 30 1,594 115 657 11 206
2,221 92 1,204 32 1,452 50 102 6 207
1,445 88 2,568 46 1,126 33 576 9 208
1,711 74 2,202 47 1,280 55 742 16 209
1,401 49 1,746 31 1,261 59 494 9 210
2,034 82 990 26 1,695 110 236 8 212
5,616 173 1,581 25 66 3 9 7 213
1,150 95 947 40 656 52 473 7 214
2,360 102 1,369 39 2,491 116 182 7 215
3,296 118 1,711 32 1,405 57 327 8 216
1,391 79 1,226 25 1,032 83 340 8 217
1,005 28 3,368 36 1,026 39 524 10 218
683 27 3,060 60 603 19 825 8 219
665 24 1,104 22 680 37 298 9 224
383 14 438 25 557 37 209 8 225
835 76 778 25 778 37 401 9 228
358 21 875 19 368 20 336 9 229
628 35 1,689 28 687 53 1,247 10 231
562 21 1,794 29 562 23 572 11 234
47 2 168 20 52 3 73 4 239
952 101 614 16 784 38 456 8 240
1,192 97 1,185 35 1,260 78 344 9 248
1,970 125 2,356 34 1,529 37 306 7 251
649 31 1,129 31 698 37 488 9 252
1,166 115 2,051 23 955 68 642 12 253
1,411 84 1,148 31 946 49 138 6 254
649 57 1,831 28 702 39 544 11 256
1,252 73 1,788 30 1,708 171 1,163 10 260
670 21 1,123 24 588 19 516 8 262
1,204 49 1,828 29 796 28 320 11 267
1,153 128 2,061 36 1,291 89 702 8 269
709 34 1,289 34 665 33 586 14 270
1,262 70 3,350 37 978 40 917 11 276
364 44 948 25 367 20 287 14 281
2,598 172 2,474 33 1,486 71 162 7 301
3,212 121 1,998 35 1,302 41 243 10 302
1,822 61 1,377 27 870 41 215 8 303
3,632 171 1,610 27 1,449 40 62 8 304
1,357 36 2,627 25 1,520 77 688 14 305
2,518 181 1,057 29 1,386 73 144 7 307
554 25 1,273 29 542 48 968 14 308
247 16 1,937 40 317 10 678 12 309
933 41 3,350 43 826 33 356 10 310
3,076 139 1,323 34 1,930 87 302 7 312
2,738 99 1,256 28 970 42 449 8 313
1,402 103 1,378 32 1,464 71 697 7 314
1,981 99 1,271 19 1,603 72 286 8 315
1,397 56 3,026 36 1,313 48 321 7 316
574 22 892 16 632 25 100 10 317
2,002 98 1,968 32 1,584 83 151 8 318
1,015 56 1,974 31 1,096 57 1,145 11 319
1,146 36 1,956 57 646 25 349 7 320
557 29 2,197 54 418 14 436 10 321
882 98 597 29 833 45 286 8 323
1,792 120 1,588 39 1,811 144 697 7 325
369 13 1,101 21 361 20 274 12 330
1,766 78 2,401 31 1,792 83 645 10 U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 20
38 3 51 16 70 8 71 6 334
939 53 2,178 44 1,006 66 1,296 14 336
1,815 114 1,924 44 1,574 87 556 11 337
843 56 1,490 29 898 39 985 9 339
71 3 172 15 114 3 67 5 340
52 41 32 1 117 7 65 4 347
1,254 65 427 31 3,251 273 737 7 351
0 0 0 0 3 0 7 1 352
1,107 99 1,217 27 1,100 67 634 10 360
2,179 102 2,388 51 1,492 66 439 8 361
556 20 1,289 24 672 44 680 8 385
32 1 16 3 14 0 11 2 386
638 39 761 28 639 37 382 8 401
2,160 61 1,458 18 944 41 257 8 402
1,849 41 3,172 44 1,295 46 711 12 404
2,013 112 790 28 2,211 103 325 8 405
1,458 56 1,951 26 1,385 70 445 14 406
902 37 3,345 39 851 24 1,123 10 407
1,984 198 1,499 29 1,555 93 348 8 408
2,711 102 1,585 36 1,572 54 341 7 409
513 22 1,058 25 588 45 302 9 410
3,471 128 1,840 31 1,176 34 162 6 412
1,837 122 2,120 26 1,298 48 334 7 413
1,774 46 1,466 27 740 34 178 7 414
1,274 47 890 18 1,017 62 210 9 415
2,401 115 1,930 39 1,322 51 181 7 417
781 46 2,677 39 840 35 611 9 419
1,332 71 2,814 53 1,310 70 784 12 423
1,205 85 1,707 39 1,419 81 622 13 424
258 17 280 35 164 17 156 7 425
2,029 70 1,311 30 983 37 94 6 430
6 0 33 7 7 1 17 5 432
294 11 991 16 414 22 254 8 434
697 55 934 21 626 41 285 11 435
585 25 1,528 38 584 21 761 15 440
1,401 64 1,839 31 1,230 45 340 9 442
0 0 24 1 0 0 0 0 443
1,640 142 2,066 33 1,859 103 750 8 469
700 25 853 39 742 45 165 7 470
8 0 3 2 0 0 9 1 475
1 0 9 1 0 0 18 2 478
586 36 829 28 605 43 628 13 479
667 21 1,252 26 727 30 437 8 480
2,157 109 789 23 1,387 78 112 8 484
1,465 82 2,718 40 978 47 328 10 501
1,203 39 1,481 24 986 46 538 8 502
1,138 69 1,473 24 1,191 68 405 8 503
2,798 126 2,097 47 1,827 78 153 7 504
1,123 133 951 21 1,017 63 422 7 505
1,450 69 925 22 1,260 81 339 12 507
715 27 3,688 73 627 19 603 11 508
3,084 130 2,156 31 1,382 42 262 7 509
1,675 82 1,792 40 1,241 60 646 11 510
1,923 104 1,677 30 1,459 64 507 7 512
2,402 85 1,490 35 1,641 91 262 8 513
2,026 82 1,448 24 1,582 90 335 8 515
1,513 34 1,580 44 742 25 305 9 516
1,830 88 1,253 30 1,571 49 491 7 517
952 39 1,953 47 809 32 496 12 518
1,535 90 2,027 38 1,214 43 281 6 U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 21
1,477 58 998 28 1,137 81 358 9 530
1,310 55 2,516 43 999 38 417 8 534
0 0 1 1 0 0 0 0 540
1,516 59 1,535 40 1,406 78 755 11 541
1,489 73 2,885 45 1,310 52 778 10 551
31 0 12 12 175 8 40 6 559
1,187 62 1,984 29 1,303 79 231 7 561
1,651 160 782 28 1,221 56 291 7 562
1,379 83 1,357 38 1,304 72 472 7 563
594 30 1,387 49 413 16 227 7 567
92 3 799 25 180 10 195 10 570
1,428 94 2,435 38 1,386 47 674 13 571
514 17 317 30 832 47 179 7 573
824 47 2,755 33 930 35 650 10 574
639 19 1,005 29 592 25 510 9 575
533 23 1,606 31 555 38 483 14 580
525 23 3,553 33 660 34 1,281 13 585
1,259 35 1,531 29 1,046 40 172 7 586
791 51 963 29 850 24 514 7 601
1,132 76 3,054 31 1,223 58 1,177 12 602
2,397 145 865 20 1,542 93 430 8 603
2,148 140 2,675 35 1,173 35 653 10 605
758 39 3,405 69 712 18 877 10 606
746 36 2,252 28 709 42 1,154 13 607
725 25 1,731 26 655 21 220 6 608
1,093 36 1,853 57 1,019 32 774 14 609
1,876 65 1,767 32 1,504 55 553 8 610
2,999 96 2,197 41 1,327 29 225 9 612
1,278 38 786 33 1,395 49 160 7 614
2,138 110 1,658 29 1,529 73 216 7 615
1,984 155 1,720 32 1,753 85 195 9 616
1,012 38 1,122 29 877 32 307 12 617
3,418 158 1,962 30 1,453 42 283 6 618
849 35 3,047 38 1,117 43 515 13 619
1,660 83 1,151 38 1,744 98 440 7 620
550 31 3,141 48 452 19 935 12 623
855 55 280 21 596 37 79 8 626
1,481 80 1,293 39 1,368 65 335 7 630
2,375 124 1,859 25 1,542 48 1,134 7 631
1,986 124 2,291 29 1,268 50 234 7 636
890 46 1,473 21 433 15 195 8 641
878 22 2,518 55 365 17 656 10 646
2,037 98 362 33 2,337 144 422 7 650
1,930 86 2,186 32 884 30 199 7 651
1,629 53 872 38 837 28 87 7 657
37 0 47 18 4 1 33 5 660
278 28 2,727 36 317 12 493 12 661
1,175 50 1,410 39 1,103 64 257 8 662
814 55 2,762 38 845 40 1,377 10 670
18 0 125 1 39 1 50 2 671
93 11 337 4 143 4 119 4 678
2,001 295 2,022 38 1,982 116 523 10 681
1 1 55 7 2 0 18 1 682
175 5 295 26 270 19 47 7 684
0 0 0 0 27 0 11 1 701
639 15 3,362 54 631 13 1,100 10 702
2,194 218 1,210 27 1,881 113 256 8 703
3,900 156 1,598 34 1,536 38 119 6 704
2,433 141 1,858 34 1,811 103 406 9 706
1,701 80 2,053 55 1,587 88 1,318 17 U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 22
1,693 70 2,322 35 1,129 41 346 8 708
1,545 96 1,901 24 1,199 57 873 8 712
449 27 2,832 90 421 23 741 15 713
3,039 110 1,696 30 1,449 61 25 7 714
2,355 150 1,514 39 2,098 93 480 7 715
956 28 2,656 71 895 30 1,771 16 716
1,406 85 1,541 27 1,273 51 304 7 717
2,026 61 2,023 34 1,644 60 307 7 718
3,785 195 2,264 28 912 47 110 7 719
1,306 93 1,493 37 932 47 337 12 720
1,330 63 566 22 1,533 88 137 8 724
1,313 115 3,329 43 1,249 41 397 9 727
1,489 90 940 26 1,089 46 290 8 731
389 40 1,302 26 503 39 468 8 732
2,770 129 2,229 31 1,446 49 317 7 734
1,357 63 2,321 41 1,257 31 260 8 740
1,095 47 2,509 34 1,125 55 826 13 747
2 0 17 4 0 0 0 0 754
58 1 16 9 108 5 63 4 757
2,309 104 1,102 19 1,770 77 547 7 760
1,975 103 1,997 47 1,704 101 494 12 762
13 0 72 9 13 1 160 6 763
1,105 41 802 42 531 17 86 8 765
937 44 2,678 44 899 39 873 11 769
14 1 117 12 71 6 193 7 770
2,782 207 1,690 28 1,309 39 143 11 772
586 41 396 25 438 21 254 8 773
1,873 159 1,609 24 2,163 183 1,043 8 774
301 26 857 26 525 25 559 7 775
810 28 1,423 33 628 29 339 12 779
11 1 57 15 48 6 29 6 781
2,662 158 2,820 29 783 24 382 6 785
701 32 3,211 45 591 21 786 11 786
682 77 422 28 1,421 92 287 7 787
1,535 13 1,952 7 2,846 181 595 6 801
3,358 133 1,457 23 1,821 77 146 7 802
1,765 48 2,553 24 487 13 283 9 803
1,615 69 1,653 44 1,423 92 694 12 804
1,859 123 1,162 22 1,341 58 356 7 805
1,852 72 1,969 44 1,368 57 537 9 806
596 22 2,766 33 737 43 798 12 808
1,538 86 1,249 8 1,280 63 203 6 810
637 38 1,491 30 786 29 421 8 812
1,155 87 2,538 41 1,159 45 890 11 813
2,066 112 1,037 28 1,360 72 419 8 814
1,314 37 2,555 31 1,116 32 458 14 815
1,564 46 3,195 49 1,354 51 436 11 816
1,401 82 2,064 32 1,269 55 211 10 817
2,185 112 2,668 40 1,715 64 140 7 818
2,380 134 1,489 38 1,815 90 442 7 828
1,056 67 1,591 33 1,025 50 565 9 830
466 16 1,514 33 422 30 416 9 831
735 30 1,264 29 609 25 168 7 832
932 37 1,182 31 2,426 196 368 7 843
1,594 94 2,136 39 1,420 92 793 10 845
1,467 105 2,106 41 1,018 41 376 8 847
3,182 122 2,026 27 1,351 32 517 7 848
25 0 49 16 124 8 100 7 850
1,269 155 2,293 36 1,302 76 852 12 856
1,521 68 1,854 31 775 44 223 8 U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 23
192 10 294 23 327 23 234 7 858
1,422 89 1,085 31 602 18 112 7 859
1,054 36 1,747 27 955 48 458 12 860
2,089 78 2,604 23 1,552 61 357 8 862
134 7 146 27 389 27 221 7 863
720 54 922 24 648 44 651 9 864
1,320 110 1,521 32 1,249 72 468 8 865
883 51 845 25 960 47 174 8 870
718 31 3,053 34 894 41 1,203 8 872
24 0 3 4 3 1 25 3 901
1,314 100 673 22 1,268 86 136 8 903
1,143 61 2,418 42 1,272 93 942 11 904
1,573 121 1,077 27 1,332 72 431 9 906
245 8 1,451 19 234 6 651 6 907
928 49 3,118 29 626 46 975 13 908
1,433 78 2,147 35 1,272 37 614 7 909
1,697 90 839 39 1,573 92 434 7 910
1,359 113 1,864 32 1,372 88 796 9 912
777 50 1,274 37 899 64 921 13 913
1,079 54 1,138 30 826 39 151 9 914
1,685 83 1,425 31 1,043 37 570 7 915
627 29 492 17 725 61 147 9 916
2,176 124 1,542 39 1,593 65 307 7 917
841 20 212 23 2,911 83 545 7 918
1,380 52 2,857 49 1,296 65 802 13 919
2,320 113 1,590 30 1,729 93 463 9 920
1,163 40 2,033 43 1,073 42 1,301 18 925
1,525 84 1,944 30 884 33 286 7 928
872 33 1,490 37 795 48 633 12 931
624 33 1,694 35 959 42 372 10 936
503 16 1,229 26 471 46 237 8 937
1,375 45 2,462 33 1,266 60 471 10 938
0 0 20 1 0 0 0 0 939
7 0 129 3 302 19 235 6 940
471 33 1,688 41 484 22 387 12 941
975 69 645 28 709 32 444 9 947
2 0 10 5 586 0 37 1 949
1,770 98 1,097 38 957 32 149 7 951
1,266 74 705 37 1,364 76 335 7 952
1,305 48 970 39 388 11 60 7 954
2,146 177 1,073 30 1,598 80 279 7 956
842 36 837 19 1,212 115 691 8 970
1,298 71 1,951 45 1,001 45 732 14 971
169 9 204 23 243 15 69 7 972
3,198 141 2,481 39 814 27 102 7 973
3,021 151 2,248 37 1,392 61 336 7 978
2,411 162 2,875 31 1,103 36 308 7 979
476 16 1,115 26 429 27 405 9 980
157 1 98 16 194 11 133 8 985
581 89 1,107 25 648 32 561 8 989
769 24 2,530 36 819 33 1,013 14 Source: Numbering Resource Utilization/Forecast Reports data filed with NeuStar, Inc. as of October 13, 2010.
Numbering Resource Utilization in the United States 24
Pooled Thousands-blocks as of June 30, 2010
Incumbent LECs and CLECs
Pooled Thousands- Total Thousands- Percent of total blocks Pooled Thousands-
Total Thousands-
Percent of total blocks
blocks reported1
that are pooled
1,238 11,031 11.22 2,189 8,989 24.35 Alaska
1 1,002 0.10 43 611 7.04 Arizona
1,909 12,279 15.55 2,562 7,504 34.14 Arkansas
735 5,946 12.36 796 4,291 18.55 California
16,369 96,652 16.94 17,689 47,815 36.99 Colorado
2,013 12,989 15.50 1,785 6,332 28.19 Connecticut
1,552 10,213 15.20 1,534 4,293 35.73 Delaware
663 3,375 19.64 461 1,187 38.84 District of Columbia
555 4,205 13.20 730 1,562 46.73 Florida
7,577 41,284 18.35 8,214 25,668 32.00 Georgia
2,791 21,349 13.07 3,586 13,828 25.93 Guam
0 0 NM
170 2,998 5.67 471 1,568 30.04 Idaho
446 3,368 13.24 511 2,000 25.55 Illinois
7,910 37,329 21.19 5,623 19,607 28.68 Indiana
2,231 15,798 14.12 2,063 8,684 23.76 Iowa
982 7,234 13.57 981 4,860 20.19 Kansas
954 7,865 12.13 1,146 4,189 27.36 Kentucky
1,072 11,549 9.28 1,382 6,460 21.39 Louisiana
1,405 10,733 13.09 2,131 7,365 28.93 Maine
682 3,194 21.35 561 1,906 29.43 Maryland
2,816 17,501 16.09 2,891 7,725 37.42 Massachusetts
5,033 28,426 17.71 3,208 9,451 33.94 Michigan
5,046 28,796 17.52 5,098 16,529 30.84 Minnesota
2,050 14,198 14.44 1,648 7,354 22.41 Mississippi
922 7,969 11.57 896 4,826 18.57 Missouri
2,416 17,587 13.74 2,191 8,379 26.15 Montana
338 2,072 16.31 178 1,378 12.92 Nebraska
467 4,084 11.43 507 2,844 17.83 Nevada
896 5,829 15.37 1,420 3,238 43.85 New Hampshire
857 5,088 16.84 553 2,072 26.69 New Jersey
5,263 26,997 19.49 4,200 12,541 33.49 New Mexico
461 3,449 13.37 923 2,529 36.50 New York
9,902 50,518 19.60 12,115 26,486 45.74 North Carolina
3,488 22,174 15.73 3,675 13,127 28.00 North Dakota
90 1,339 6.72 127 872 14.56 Northern Marianas
4,505 30,653 14.70 4,418 16,448 26.86 Oklahoma
1,099 8,681 12.66 1,487 5,799 25.64 Oregon
1,398 9,057 15.44 1,516 4,809 31.52 Pennsylvania
7,193 40,031 17.97 6,225 16,466 37.81 Puerto Rico
251 3,539 7.09 1,076 4,261 25.25 Rhode Island
405 3,786 10.70 416 1,308 31.80 South Carolina
1,602 9,289 17.25 1,757 6,432 27.32 South Dakota
127 1,488 8.53 179 1,284 13.94 Tennessee
2,410 14,214 16.96 3,041 9,291 32.73 Texas
8,234 57,889 14.22 12,973 32,502 39.91 Utah
1,521 6,333 24.02 975 3,227 30.21 Vermont
446 3,875 11.51 327 854 38.29 Virgin Islands
3,348 18,657 17.95 3,919 11,116 35.26 Washington
2,227 18,163 12.26 2,539 8,251 30.77 West Virginia
641 3,403 18.84 659 2,597 25.38 Wisconsin
1,704 12,473 13.66 1,495 8,716 17.15 Wyoming
181 1,162 15.58 87 844 10.31 ota s
128,592 799,113 16.09 137,177 432,275 31.73 Source: Pooling data provided by NeuStar, Inc. 1 Includes only those thousands-blocks in rate centers with pooling.NM - Not meaningful.
Numbering Resource Utilization in the United States 25
Increased Utilization and Telephone Numbers Saved due to Thousands-Block Pooling
Utilization had
Numbers Assigned Total Percent
had Whole NXXs
Whole NXXs
of Thousands-blocks
Saved Due
to End-users1
due to Pooling
272 8,183,976 12,861,000 63.6%
51,090,000 16.0% 47.6%
38,229,000 Mobile Wireless
537 102,674,243 135,998,000 75.5%
211,800,000 48.5% 27.0%
75,802,000 CLEC
1,400 53,411,146 107,944,000 49.5%
477,380,000 11.2% 38.3%
369,436,000 Total
2,209 164,279,322 256,815,000 64.0%
740,290,000 22.2% 41.8%
483,475,000 1 Includes only those telephone numbers in pooled blocks on which carriers reported utilization data. Source: Numbering Resource Utilization/Forecast Reports data filed with NeuStar, Inc. as of October 13, 2010.
NeuStar also provided data on thousands-block pooling.
Number Utilization for Specialized Non-geographic Area Codes
Total Unique Specialized (Thousands of telephone numbers)
1 Includes only those telephone numbers in blocks on which carriers reported utilization data. Source: Numbering Resource Utilization/Forecast Reports data filed with NeuStar, Inc. as of October 13, 2010.
Numbering Resource Utilization in the United States 26
Incumbent LECs: Average Utilization Rates by Number of
Thousands-Blocks Held in a Rate Center 100%
Number of thousands-blocks held in a single rate center
Note: number of thousands-blocks has been rounded to the nearest ten. U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 27
Mobile Wireless: Average Utilization Rates by
Number of Thousands-Blocks Held in a Rate Center
Numbering Resource Utilization in the United States 28
CLECs: Average Utilization Rates by Number of
Thousands-Blocks Held in a Rate Center
Numbering Resource Utilization in the United States 29
Paging Carriers: Average Utilization Rates by Number of Thousands-Blocks Held in a Rate Center
Numbering Resource Utilization in the United States 30
Alternate Sources of NPA-NXX Assignments1
NPA-NXXs that appear in
NRUF NANPA
All Three Databases NRUF, NANPA and LERG
140,374 Two of the Three Databases
NRUF and NANPA
1,813 NANPA and LERG
2,122 NRUF and LERG
81 Only One Database
357 NANPA
383 LERG
264 Total NXXs in Database.
Sources: NANPA's NPA-NXX assignments database as of July 1, 2010; the LERG, as ofJuly 1, 2010; NRUF June 30, 2010 database (NRUF forms filed as of October 13, 2010).
Source: Numbering Resource Utilization/Forecast Reports filed with NeuStar, Inc.
Note: Starting with June 2006 data, where an RBOC has acquired a carrier with CLEC services in the RBOC's operating region, the numbering resources of the acquired CLEC that are in the RBOC's operating region are counted as incumbent LEC resources. Where the acquired CLEC provides services outside of the acquirer's operating region, the numbering resources are treated as CLEC resources.
Numbering Resource Utilization in the United States 31
NPA-NXX Assignments, Returns, and Net Assignments
NPA-NXXs Assigned NPA-NXXs Returned
2003 Q41
539 244 295 2004 Q1
888 182 706 2004 Q2
728 323 405 2004 Q3
748 160 588 2004 Q4
761 319 442 2005 Q1
1,113 249 864 2005 Q2
778 330 448 2005 Q3
716 246 470 2005 Q4
705 203 502 2006 Q1
1,165 194 971 2006 Q2
944 175 769 2006 Q3
883 137 746 2006 Q4
987 188 799 2007 Q1
1,117 170 947 2007 Q2
768 195 573 2007 Q3
747 173 574 2007 Q4
584 211 373 2008 Q1
720 166 554 2008 Q2
804 96 708 2008 Q3
699 149 550 2008 Q4
723 343 380 2009 Q1
675 189 486 2009 Q2
495 115 380 2009 Q3
402 82 320 2009 Q4
572 148 424 2010 Q1
879 80 799 2010 Q2
578 67 511 2010 Q3
676 77 599 1 Data for prior periods can be found in the "Data as of June 30, 2009" edition of this report, which can be found at: http://www.fcc.gov/wcb/iatd/number.html [12]. Source: http://www.nanpa.com/reports/reports_cocodes_actStatus.html [16].
Numbering Resource Utilization in the United States 32
Telephone Number Porting Activity Since Wireless Porting Started1
Wireline to
1,199 14 817 2 2,032 2004
2,296 168 1,936 4 4,404 Second
2,263 287 2,175 4 4,729 Third
2,143 281 2,417 4 4,845 Fourth
2,327 314 2,384 4 5,029 2005
2,891 208 2,358 5 5,462 Second
2,915 149 2,812 4 5,880 Third
3,323 135 2,750 6 6,213 Fourth
3,093 88 2,723 6 5,911 2006
4,011 78 2,562 9 6,659 Second
3,318 95 2,422 6 5,840 Third
3,012 152 2,658 5 5,828 Fourth
2,933 114 2,628 7 5,683 2007
2,801 117 3,225 6 6,149 Second
2,925 160 3,290 8 6,382 Third
3,963 363 3,283 11 7,619 Fourth
5,340 257 3,489 7 9,093 2008
3,987 63 3,266 10 7,326 Second
3,828 62 3,169 8 7,067 Third
3,907 134 4,006 12 8,059 Fourth
3,696 134 3,983 13 7,827 2009
3,601 118 4,010 14 7,743 Second
3,844 113 3,802 14 7,773 Third
3,973 215 4,134 15 8,337 Fourth
3,812 181 3,961 16 7,969 2010
4,048 97 3,797 13 7,954 Second
4,308 89 3,757 14 8,167 Third
4,553 103 4,696 50 9,403 Cumulative Total
94,309 4,289 86,509 275 185,382 1 These figures include numbers that were ported back to the original carrier, or where the subscriber with the ported number terminated service.
2 Excludes significant porting activity between Cingular and AT&T Wireless following the closing of their merger in October 2004.
Source: Raw data from Local Number Portability Administrator (NeuStar, Inc.). Rollups performed by the Industry Analysis and Technology Division staff, Wireline Competition Bureau.
Numbering Resource Utilization in the United States 33
Telephone Numbers Remaining in the Porting Database at the End of Each Quarter1
25,869 16 795 2 26,682 2004
28,462 173 2,686 3 31,324 Second
28,371 406 4,635 4 33,417 Third
29,396 667 6,874 9 36,945 Fourth
30,607 832 9,041 11 41,491 2005
32,399 1,001 10,860 16 44,276 Second
34,169 1,092 12,956 19 48,236 Third
36,013 1,201 14,804 23 52,041 Fourth
37,608 1,246 16,101 29 54,983 2006
40,194 1,272 17,577 34 59,077 Second
42,130 1,333 19,032 42 62,538 Third
43,743 1,407 20,509 46 65,705 Fourth
45,149 1,480 21,920 50 68,600 2007
46,761 1,541 23,518 50 71,870 Second
48,396 1,659 25,399 54 75,508 Third4
50,222 2,057 27,068 116 79,463 Fourth
53,168 2,031 29,065 120 84,384 2008
55,095 2,075 30,605 127 87,902 Second
56,114 2,067 32,024 153 90,359 Third
57,217 2,175 34,089 156 93,637 Fourth
58,924 2,255 35,851 171 97,202 2009
60,609 2,353 37,663 177 100,801 Second
62,508 2,433 39,221 182 104,344 Third
64,333 2,539 40,522 181 107,576 Fourth
66,136 2,654 41,776 184 110,750 2010
67,517 2,701 43,425 186 113,829 Second
69,627 2,651 44,591 200 117,069 Third
71,923 2,673 46,371 201 121,168 1 Numbers ported because customer changed carriers. The database contains the date when the telephone number record was last updated. For most telephone numbers, this was the most recent port. For those telephone numbers affected by area code changes, however, the date refers to when the record was updated to reflect the new area code. See the text for a fuller discussion.
2 Excludes significant porting activity between Cingular and AT&T Wireless following the closing of their merger.
3 Data from prior periods can be found in the "Data as of June 30, 2009" edition of this report, which can be found at: http://www.fcc.gov/wcb/iatd/number.html [12].
4 Starting with the July 2007 data, the method of determining whether a port came from a wireline or wireless carrier changed. For numbers that have been ported multiple times, the original carrier is now used to determine the porting carrier's type. Previously, the porting carrier's type was based on the most recent port. This was done to better estimate the number of phone numbers used in wireline and wireless service.
Numbering Resource Utilization in the United States 34
Numbers in the Porting Database by Quarter in Which They Were Most Recently Ported1
as of September 30, 20102
Ported During
817 6 264 2 2004
1,179 69 588 2 Second
1,136 71 669 7 Third
1,179 123 810 8 Fourth
1,107 89 816 3 2005
1,327 67 810 4 Second
1,397 60 881 3 Third
1,622 69 1,018 3 Fourth
1,426 52 1,036 4 2006
2,130 41 1,018 4 Second
1,686 52 1,059 6 Third
1,475 95 1,230 4 Fourth
1,461 78 1,268 5 2007
1,581 70 1,246 5 Second
1,784 106 1,289 4 Third
2,205 186 1,590 16 Fourth
3,210 169 1,753 9 2008
2,480 56 1,753 9 Second
2,549 59 1,742 10 Third
2,631 103 2,467 7 Fourth
2,632 101 2,517 5 2009
2,682 112 2,409 7 Second
2,929 110 2,435 6 Third
3,165 198 2,850 7 Fourth
3,181 184 2,956 7 2010
3,475 110 2,981 9 Second
3,853 106 2,982 9 Third
4,258 129 3,934 11 1 The vast majority of these numbers are ported because customer changed carriers.2 The local number portability database was designed solely for the purpose of routing calls. As such, it retains only the most recent porting activity for any given number. So if a consumer ports a number from Carrier A to Carrier B, and later the consumer then ports the number from Carrier B to Carrier C, the database will not reflect the original port from Carrier A to Carrier B. Also, numbers that revert back to the original carrier (either because the customer ports the number back to the original carrier or because the customer discontinues service with that number) are dropped from the database. Lastly, area code splits can make a number appear to be ported later than it actually was. Starting with the July 2007 edition of this report, the methodology for determining whether a number was ported away from a wireline or a wireless carrier changed. Rather than relying on the carrier type of the most recent port, the numbers now reflect the original carrier type, based on the carrier that is assigned the thousands block of the donated number.3 Data from prior periods can be found in the "Data as of June 30, 2009" edition of this report, which can be found at: http://www.fcc.gov/wcb/iatd/number.html [12].
Numbering Resource Utilization in the United States 35
Ports Between Carrier Types as of September 30, 2010
649 58 548 1 1,256 Alaska
161 4 323 1 488 Arizona
1,635 32 930 4 2,600 Arkansas
252 120 169 **
542 California
10,512 157 5,643 34 16,346 Colorado
1,322 43 899 4 2,268 Connecticut
1,032 22 529 3 1,585 Delaware
381 3 110 1 494 District of Columbia
504 5 209 2 721 Florida
4,186 127 3,219 13 7,545 Georgia
1,982 107 1,377 12 3,477 Guam
6 0 21 0 27 Hawaii
226 5 235 1 467 Idaho
158 17 193 **
369 Illinois
3,320 90 2,167 10 5,587 Indiana
951 66 796 4 1,818 Iowa
354 15 333 **
703 Kansas
588 235 354 2 1,179 Kentucky
497 62 492 2 1,054 Louisiana
621 17 525 2 1,166 Maine
371 22 137 1 531 Maryland
1,379 20 987 4 2,390 Massachusetts
2,970 49 1,150 4 4,172 Michigan
2,525 79 1,977 7 4,589 Minnesota
1,604 43 1,043 5 2,695 Mississippi
230 27 254 **
511 Missouri
914 78 784 2 1,778 Montana
108 8 76 **
312 35 195 **
543 Nevada
739 11 363 2 1,114 New Hampshire
472 13 185 1 670 New Jersey
2,363 32 1,334 7 3,737 New Mexico
196 15 204 1 415 New York
6,200 104 3,426 14 9,744 North Carolina
1,595 91 1,117 4 2,806 North Dakota
84 6 60 **
150 Northern Mariana Isl.
2,158 89 1,695 9 3,952 Oklahoma
561 38 525 1 1,125 Oregon
844 39 567 2 1,453 Pennsylvania
3,206 48 1,940 6 5,201 Puerto Rico
56 77 560 **
693 Rhode Island
301 6 173 1 480 South Carolina
692 42 474 1 1,210 South Dakota
122 6 65 **
194 Tennessee
1,184 39 786 3 2,012 Texas
4,842 299 3,330 13 8,484 Utah
891 24 446 1 1,363 Vermont
138 4 55 **
197 Virgin Islands
1,778 39 1,155 6 2,979 Washington
2,358 49 1,079 6 3,493 West Virginia
250 5 262 **
519 Wisconsin
1,100 43 857 3 2,004 Wyoming
39 5 32 **
77 Unduplicated total
71,923 2,673 46,371 201 121,168 * Indicates that the number has been withheld to protect carrier confidentiality.** Indicates a number between 1 and 499.1 Starting with the July 2007 report, the method of determining whether a port came from a wireline or wireless carrier changed. For numbers ported multiple times, the original carrier is now used to determine the porting carrier's type. Previously, the porting carrier's type was based on the most recent port. This is done to better estimate the number of phone numbers used in wireline and wireless service.Source: Raw data from Local Number Portability Administrator (NeuStar, Inc.). Rollups performed by the Industry Analysis and Technology Division staff, Wireline Competition Bureau.
Numbering Resource Utilization in the United States 36
Number of Carriers Porting or Receiving Ports as of September 30, 2010
Wireline to Wireline to Wireless to Wireless to Wireline Ports
Wireline Ports
37 41 33 12 15 13 10 23 Alaska
8 10 8 8 6 7 6 7 Arizona
33 31 28 11 11 14 8 21 Arkansas
22 22 16 7 8 9 8 18 California
54 61 54 15 15 16 11 49 Colorado
37 38 38 14 15 16 10 29 Connecticut
21 30 17 9 7 8 6 18 Delaware
27 30 15 8 7 9 7 18 District of Columbia
27 29 15 7 6 8 6 19 Florida
66 79 51 11 10 12 9 49 Georgia
59 74 54 14 15 13 12 42 Guam
4 4 0 0 5 5 0 0 Hawaii
8 9 8 7 6 7 6 8 Idaho
25 30 22 12 15 13 11 16 Illinois
61 64 50 15 14 15 11 38 Indiana
50 57 45 15 12 15 9 32 Iowa
92 69 63 12 15 13 13 19 Kansas
36 41 41 16 18 18 11 25 Kentucky
42 53 29 17 15 17 11 25 Louisiana
37 36 24 11 9 11 8 21 Maine
25 31 23 7 6 7 6 19 Maryland
41 42 29 10 8 11 7 27 Massachusetts
36 38 30 9 7 8 7 28 Michigan
57 62 55 16 13 15 11 43 Minnesota
72 78 65 11 9 12 8 38 Mississippi
35 34 22 11 10 12 8 15 Missouri
38 42 28 13 12 12 9 26 Montana
17 19 17 6 8 6 4 9 Nebraska
28 27 36 10 15 13 10 13 Nevada
30 31 20 11 10 11 9 23 New Hampshire
21 24 19 8 7 8 6 19 New Jersey
44 39 32 9 7 9 7 29 New Mexico
24 25 17 11 13 13 10 9 New York
67 72 62 11 8 11 8 51 North Carolina
44 51 35 13 13 13 11 31 North Dakota
19 19 25 8 7 9 4 9 Northern Mariana Isl.
0 0 1 1 3 4 1 1 Ohio
55 63 55 16 14 15 13 42 Oklahoma
28 31 27 13 19 17 11 21 Oregon
45 48 40 12 9 12 7 31 Pennsylvania
52 60 43 13 16 17 8 42 Puerto Rico
5 5 5 7 6 8 6 4 Rhode Island
16 19 10 7 6 7 5 14 South Carolina
39 51 35 8 12 10 9 32 South Dakota
21 21 20 5 6 9 5 8 Tennessee
51 52 47 12 12 14 11 37 Texas
78 84 74 29 25 30 16 52 Utah
23 23 26 10 12 14 8 18 Vermont
15 17 10 6 6 6 4 10 Virgin Islands
0 0 1 2 4 5 2 1 Virginia
44 50 34 11 11 11 10 28 Washington
41 50 33 11 10 11 9 37 West Virginia
19 24 11 9 9 11 8 11 Wisconsin
46 48 55 15 13 15 13 25 Wyoming
12 15 11 8 13 12 7 7 Unduplicated total
913 917 809 115 143 131 86 456 1 Starting with the July 2007 report, the method of determining whether a port came from a wireline or wireless carrier changed. For numbers ported multiple times, the original carrier is now used to determine the porting carrier's type. Previously, the porting carrier's type was based on the most recent port. This is done to better estimate the number of phone numbers employed in wireline and wireless service.Source: Raw data from Local Number Portability Administrator (NeuStar, Inc.). Rollups performed by the Industry Analysisand Technology Division staff, Wireline Competition Bureau.
Numbering Resource Utilization in the United States 37
Percentage of Numbers Ported as of June 30, 2010
695 4,461 15.6 507 5,006 10.1 1,202 9,467 12.7 Alaska
175 928 18.9 310 626 49.5 485 1,553 31.2 American Samoa
0 27 0.0 0 27 0.0 Arizona
1,623 7,757 20.9 914 5,456 16.7 2,537 13,213 19.2 Arkansas
365 2,588 14.1 168 2,607 6.4 533 5,194 10.3 California
10,364 45,719 22.7 5,499 34,578 15.9 15,863 80,297 19.8 Colorado
1,332 7,567 17.6 886 4,915 18.0 2,219 12,481 17.8 Connecticut
1,023 4,680 21.9 510 3,256 15.7 1,533 7,936 19.3 Delaware
372 1,822 20.4 106 870 12.2 479 2,692 17.8 District of Columbia
496 3,234 15.3 202 1,246 16.2 698 4,481 15.6 Florida
4,081 21,295 19.2 3,129 17,523 17.9 7,210 38,818 18.6 Georgia
1,997 10,508 19.0 1,334 9,292 14.4 3,330 19,800 16.8 Guam
5 93 5.7 20 143 13.9 25 237 10.6 Hawaii
221 1,538 14.3 228 1,280 17.8 448 2,819 15.9 Idaho
163 1,711 9.5 189 1,280 14.8 352 2,991 11.8 Illinois
3,305 16,519 20.0 2,093 12,225 17.1 5,398 28,745 18.8 Indiana
986 6,069 16.3 800 5,502 14.5 1,786 11,571 15.4 Iowa
340 4,580 7.4 321 2,587 12.4 661 7,167 9.2 Kansas
796 2,903 27.4 353 2,502 14.1 1,149 5,405 21.3 Kentucky
543 4,199 12.9 474 3,833 12.4 1,018 8,032 12.7 Louisiana
634 4,397 14.4 503 4,437 11.3 1,138 8,834 12.9 Maine
380 1,445 26.3 135 1,126 12.0 515 2,570 20.0 Maryland
1,309 9,515 13.8 950 5,598 17.0 2,259 15,113 14.9 Massachusetts
2,924 13,914 21.0 1,120 6,431 17.4 4,044 20,344 19.9 Michigan
2,531 10,407 24.3 1,913 10,439 18.3 4,444 20,846 21.3 Minnesota
1,608 7,272 22.1 1,017 4,799 21.2 2,625 12,070 21.7 Mississippi
247 2,318 10.6 242 2,507 9.7 489 4,825 10.1 Missouri
968 6,154 15.7 751 5,391 13.9 1,719 11,544 14.9 Montana
113 902 12.6 75 851 8.8 188 1,754 10.7 Nebraska
332 2,096 15.9 199 1,612 12.3 531 3,709 14.3 Nevada
738 3,004 24.6 353 2,509 14.1 1,091 5,513 19.8 New Hampshire
476 2,148 22.2 180 1,173 15.3 656 3,321 19.8 New Jersey
2,286 13,349 17.1 1,291 8,687 14.9 3,576 22,037 16.2 New Mexico
205 1,983 10.4 199 1,815 11.0 405 3,798 10.7 New York
6,100 26,823 22.7 3,306 19,878 16.6 9,406 46,701 20.1 North Carolina
1,632 10,307 15.8 1,075 8,659 12.4 2,707 18,966 14.3 North Dakota
89 639 13.9 58 631 9.2 146 1,270 11.5 Northern Mariana Isl.
18 0.0 1 39 3.2 1 56 2.2 Ohio
2,194 12,663 17.3 1,641 11,098 14.8 3,835 23,761 16.1 Oklahoma
588 3,363 17.5 499 3,341 14.9 1,087 6,704 16.2 Oregon
850 4,456 19.1 555 3,380 16.4 1,405 7,836 17.9 Pennsylvania
3,162 16,830 18.8 1,881 11,694 16.1 5,044 28,525 17.7 Puerto Rico
118 1,543 7.7 497 3,148 15.8 615 4,691 13.1 Rhode Island
302 2,160 14.0 167 944 17.7 469 3,104 15.1 South Carolina
719 4,529 15.9 454 4,093 11.1 1,173 8,622 13.6 South Dakota
126 758 16.7 64 712 8.9 190 1,470 12.9 Tennessee
1,196 6,399 18.7 760 6,862 11.1 1,956 13,262 14.7 Texas
4,924 27,134 18.1 3,222 23,225 13.9 8,146 50,359 16.2 Utah
897 3,974 22.6 436 2,420 18.0 1,332 6,394 20.8 Vermont
140 1,765 7.9 54 487 11.0 194 2,252 8.6 Virgin Islands
52 0.0 1 117 1.3 1 169 0.9 Virginia
1,738 11,159 15.6 1,122 7,877 14.2 2,860 19,036 15.0 Washington
2,320 9,515 24.4 1,058 6,113 17.3 3,378 15,628 21.6 West Virginia
244 1,358 18.0 255 1,522 16.8 499 2,880 17.3 Wisconsin
1,113 5,691 19.6 831 4,799 17.3 1,944 10,490 18.5 Wyoming
43 554 7.7 31 542 5.8 74 1,096 6.7 Total
72,130 378,766 19.0 44,939 293,710 15.3 117,069 672,476 17.4 NA Not applicable. Number portability is not available in American Samoa or Northern Mariana Islands* Indicates a number between 1 and 499.1Because the latest available NRUF data are as of June 30, 2010, porting data of the same vintage are used. Unlike in Tables 17 and 18, in this table the carrier type is that of the carrier porting the number. This is done to provide a measure of the likelihood that a number currently employed in either service will be ported.Source: Raw data from Local Number Portability Administrator (NeuStar, Inc.) and Numbering Resource Utilization/Forecast Reports filed with NeuStar, Inc. as of October 13, 2010. Rollups performed by the Industry Analysis and Technology Division staff, Wireline Competition Bureau.
Numbering Resource Utilization in the United States 38
Telephone Numbers Assigned for Toll-Free Service1
Total Spare Toll-Free
3,155,955 731,438 3,887,393 3,822,607 1994
4,948,605 763,235 5,711,840 1,998,160 1995
6,700,576 286,487 6,987,063 722,937 1996
9,527,982 945,671 10,473,653 5,216,347 1997
12,980,714 996,449 13,977,163 1,712,837 1998
16,200,883 965,466 17,166,349 6,503,651 1999
19,677,001 1,101,964 20,778,965 2,891,035 2000
23,022,015 1,178,096 24,200,111 7,449,889 2001
23,453,029 1,027,973 24,481,002 7,168,998 2002
22,496,215 1,051,232 23,547,447 8,102,553 2003
21,108,662 941,520 22,050,182 9,599,818 2004
22,159,440 1,145,661 23,305,101 8,344,899 2005
22,474,643 957,835 23,432,478 8,217,522 2006
22,709,753 756,808 23,466,561 8,183,439 2007
23,902,1133
585,864 24,487,982 7,322,018 2008
24,556,244 773,164 25,329,408 6,480,592 2009
26,035,821 488,248 26,524,069 5,285,931 2010
28,619,416 492,435 29,111,851 2,698,205 1 Toll-free (800) service was initially offered by AT&T in 1967. On May 1, 1993, procedures for routing toll- free calls were changed and 800 numbers were made "portable" so customers who switched service providers could retain their numbers. Due to the growth in demand for toll-free numbers, a new toll-free calling code, 888, was added in March 1996, which made it possible to assign about 8 million new toll-free numbers. A third toll-free calling code, 877, was added in April 1998; and a fourth toll-free code, 866, was added in July 2000.
2 Miscellaneous numbers include those in the 800, 888, 877, and 866 service management systems maintained by Database Service Management, Inc., and categorized as reserved, assigned but not yet activated, recently disconnected, or suspended.
3 On February 15, 2008, SMS800 freed up all unused numbers contained in certain blocks of numbers that were reserved for the provision of certain mobile radio telecommunications (pager) services within a specified geographic area. These numbers were in NPA 800 and had NXXs in the range of NX2 where ‘N’ = 2 through 9 and ‘X’ = 0 or 1 and the numbers ended in a state code. See, http://www.sms800.com/PublicContent.aspx?Text=2008&URL=Shared+Documents%2fPublic%2fNews%2f2008&amp [17];Site=Public, visited Jul 1, 2011.
Numbering Resource Utilization in the United States 39
Telephone Numbers Assigned for 800 Toll-Free Service1
7,572,091
137,705 7,709,796 204 December
7,566,810
132,887 7,699,697 10,303 2001
7,434,621
264,967 7,699,588 10,412 June
7,357,279
242,106 7,599,385 110,615 September
7,383,111
164,881 7,547,992 162,008 December
7,370,055
184,689 7,554,744 155,256 2002
7,181,636
400,955 7,582,591 127,409 June
282,005 7,516,852 193,148 September
7,200,821
177,723 7,378,544 331,456 December
7,210,159
203,268 7,413,427 296,573 2003
7,182,120
224,536 7,406,656 303,344 June
7,171,068
234,576 7,405,644 304,356 September
7,031,806
222,846 7,254,652 455,348 December
7,089,752
260,807 7,350,559 359,441 2004
234,719 7,422,100 287,900 June
187,107 7,368,323 341,677 September
7,262,915
197,252 7,460,167 249,833 December
7,332,085
208,368 7,540,453 169,547 2005
7,267,936
234,679 7,502,615 207,385 June
7,163,402
425,206 7,588,608 121,392 September
7,160,678
495,326 7,656,004 53,996 December
7,317,165
277,052 7,594,217 115,783 2006
7,416,046
197,083 7,613,129 96,871 June
317,525 7,647,941 62,059 September
7,419,137
279,471 7,698,608 11,392 December
7,445,535
207,672 7,653,207 56,793 2007
7,559,307
140,686 7,699,993 10,007 June
7,546,532
153,063 7,699,595 10,405 September
7,597,883
102,117 7,700,000 10,000 December
7,736,774
123,226 7,860,000 10,000 2008
7,731,2843
128,716 7,860,000 10,0003
7,686,736
173,264 7,860,000 10,0003
7,755,279
104,721 7,860,000 10,0003
7,731,430
128,570 7,860,000 10,0003
7,752,946
107,054 7,860,000 10,0003
7,775,315
84,685 7,860,000 10,0003
7,780,198
79,802 7,860,000 10,0003
7,793,883
66,117 7,860,000 10,0003
7,771,824
98,232 7,870,056 10,0003
7,797,369
72,687 7,870,056 10,0003
7,803,429
66,644 7,870,073 10,0003
Data from prior periods can be found in Table 18.4 of the Februrary 2007 edition of Trends in Telephone Service, which can be found at: http://www.fcc.gov/wcb/iatd/trends.html [18].1 - 3 See Notes to Table 20.
Numbering Resource Utilization in the United States 40
Telephone Numbers Assigned for 888 Toll-Free Service1
7,806,252 173,588 7,979,840 160 December
7,789,188 177,328 7,966,516 13,484 2001
7,616,189 355,451 7,971,640 8,360 June
7,548,761 270,198 7,818,959 161,041 September
7,508,100 203,518 7,711,618 268,382 December
7,452,071 190,727 7,642,798 337,202 2002
6,964,624 577,910 7,542,534 437,466 June
6,629,862 354,771 6,984,633 995,367 September
6,682,043 92,050 6,774,093 1,205,907 December
6,610,191 154,015 6,764,206 1,215,794 2003
6,408,723 324,558 6,733,281 1,246,719 June
6,228,846 251,701 6,480,547 1,499,453 September
5,818,266 216,862 6,035,128 1,944,872 December
5,711,949 250,662 5,962,611 2,017,389 2004
5,680,105 133,824 5,813,929 2,166,071 June
5,640,743 128,141 5,768,884 2,211,116 September
5,716,957 210,068 5,927,025 2,052,975 December
5,563,469 384,320 5,947,789 2,032,211 2005
5,465,594 159,097 5,624,691 2,355,309 June
5,306,927 296,729 5,603,656 2,376,344 September
5,314,969 221,122 5,536,091 2,443,909 December
5,265,331 196,817 5,462,148 2,517,852 2006
5,049,966 321,175 5,371,141 2,608,859 June
4,930,939 387,726 5,318,665 2,661,335 September
4,923,018 282,840 5,205,858 2,774,142 December
4,894,774 154,764 5,049,538 2,930,462 2007
4,865,839 172,035 5,037,874 2,942,126 June
4,892,896 211,491 5,104,387 2,875,613 September
5,014,039 143,278 5,157,317 2,822,683 December
5,075,256 134,928 5,210,184 2,769,816 2008
5,131,254 300,830 5,432,084 2,547,916 June
5,153,074 328,514 5,481,588 2,498,412 September
5,212,933 131,617 5,344,550 2,635,450 December
5,204,756 195,377 5,400,133 2,579,867 2009
5,221,440 186,536 5,407,976 2,572,024 June
5,306,134 123,891 5,430,025 2,549,975 September
5,468,278 120,409 5,588,687 2,391,313 December
5,690,770 117,469 5,808,239 2,171,761 2010
5,984,221 177,361 6,161,582 1,818,418 June
6,441,045 129,510 6,570,555 1,409,445 September
6,588,038 80,657 6,668,695 1,311,305 Data from prior periods can be found in Table 18.5 of the Februrary 2007 edition of Trends in Telephone Service, which can be found at: http://www.fcc.gov/wcb/iatd/trends.html [18].1 - 2 See Notes to Table 20.
Numbering Resource Utilization in the United States 41
Telephone Numbers Assigned for 877 Toll-Free Service1
6,539,180 496,015 7,035,195 944,805 December
6,391,285 719,333 7,110,618 869,382 2001
6,289,079 469,980 6,759,059 1,220,941 June
6,094,898 715,097 6,809,995 1,170,005 September
6,163,297 489,084 6,652,381 1,327,619 December
6,214,863 345,468 6,560,331 1,419,669 2002
6,174,529 340,472 6,515,001 1,464,999 June
6,016,107 267,320 6,283,427 1,696,573 September
5,656,158 275,722 5,931,880 2,048,120 December
5,448,276 421,984 5,870,260 2,109,740 2003
5,132,413 579,240 5,711,653 2,268,347 June
4,791,792 376,236 5,168,028 2,811,972 September
4,617,147 170,787 4,787,934 3,192,066 December
4,536,366 191,410 4,727,776 3,252,224 2004
4,528,716 163,856 4,692,572 3,287,428 June
4,550,870 146,826 4,697,696 3,282,304 September
4,537,840 214,197 4,752,037 3,227,963 December
4,551,486 254,082 4,805,568 3,174,432 2005
4,590,227 139,089 4,729,316 3,250,684 June
4,498,452 232,477 4,730,929 3,249,071 September
4,476,657 193,315 4,669,972 3,310,028 December
4,424,365 212,543 4,636,908 3,343,092 2006
4,387,383 178,974 4,566,357 3,413,643 June
4,227,659 203,501 4,431,160 3,548,840 September
4,216,739 221,090 4,437,829 3,542,171 December
4,158,082 191,476 4,349,558 3,630,442 2007
4,160,134 126,236 4,286,370 3,693,630 June
4,176,830 168,005 4,344,835 3,635,165 September
4,186,296 140,506 4,326,802 3,653,198 December
4,236,995 151,687 4,388,682 3,591,318 2008
4,243,519 150,600 4,394,119 3,585,881 June
4,312,293 204,414 4,516,707 3,463,293 September
4,105,708 266,286 4,371,994 3,608,006 December
4,126,424 187,099 4,313,523 3,666,477 2009
4,159,486 144,758 4,304,244 3,675,756 June
4,390,811 169,577 4,560,388 3,419,612 September
4,583,580 138,286 4,721,866 3,258,134 December
4,942,751 131,204 5,073,955 2,906,045 2010
5,398,377 159,913 5,558,290 2,421,710 June
5,930,660 205,829 6,136,489 1,843,511 September
6,458,985 151,866 6,610,851 1,369,132 Data from prior periods can be found in Table 18.6 of the Februrary 2007 edition of Trends in Telephone Service, which can be found at: http://www.fcc.gov/wcb/iatd/trends.html [18].1 - 2 See Notes to Table 20.
Numbering Resource Utilization in the United States 42
Telephone Numbers Assigned for 866 Toll-Free Service1
672,250 155,646 827,896 7,152,104 December
1,274,732 148,548 1,423,280 6,556,720 2001
1,652,602 361,888 2,014,490 5,965,510 June
1,944,520 362,880 2,307,400 5,672,600 September
2,256,792 308,801 2,565,593 5,414,407 December
2,416,040 307,089 2,723,129 5,256,871 2002
2,640,414 321,530 2,961,944 5,018,056 June
2,864,605 219,232 3,083,837 4,896,163 September
2,977,379 244,297 3,221,676 4,758,324 December
3,227,589 271,965 3,499,554 4,480,446 2003
3,461,686 299,700 3,761,386 4,218,614 June
3,486,674 420,477 3,907,151 4,072,849 September
3,609,244 265,446 3,874,690 4,105,310 December
3,770,595 238,641 4,009,236 3,970,764 2004
3,966,922 231,683 4,198,605 3,781,395 June
4,281,378 263,560 4,544,938 3,435,062 September
4,476,150 281,577 4,757,727 3,222,273 December
4,712,400 298,891 5,011,291 2,968,709 2005
5,015,324 267,412 5,282,736 2,697,264 June
5,047,314 487,471 5,534,785 2,445,215 September
5,259,730 352,226 5,611,956 2,368,044 December
5,467,782 271,423 5,739,205 2,240,795 2006
5,613,475 211,021 5,824,496 2,155,504 June
5,803,923 205,051 6,008,974 1,971,026 September
6,078,119 160,737 6,238,856 1,741,144 December
6,201,362 212,896 6,414,258 1,565,742 2007
6,355,241 207,073 6,562,314 1,417,686 June
6,555,756 240,460 6,796,216 1,183,784 September
6,685,581 219,067 6,904,648 1,075,352 December
6,853,093 176,023 7,029,116 950,884 2008
7,001,587 191,687 7,193,274 786,726 June
7,192,852 225,175 7,418,027 561,973 September
7,304,334 284,988 7,589,322 390,678 December
7,493,634 262,118 7,755,752 244,248 2009
7,752,906 193,240 7,946,146 33,854 June
7,766,358 185,149 7,951,507 28,493 September
7,702,169 165,567 7,867,736 112,264 December
7,608,417 173,458 7,781,875 198,125 2010
7,758,447 135,697 7,894,144 85,856 June
7,819,430 157,837 7,977,267 2,733 September
7,768,964 193,268 7,962,232 17,768 1 - 2 See Notes to Table 20.
Numbering Resource Utilization in the United States 43
Area Codes by State (1947 - 2010)
Area Area Code Area Area Code Area Area Code Area Area Code Code
Source: North American Numbering Plan Administrator. Note: Implementation dates after 2009 are scheduled dates.
Numbering Resource Utilization in the United States 44
Area Code Assignments (1999-2009)
Numbering Resource Utilization in the United States 45
Area Code Assignments (1999-2009) -- Continued
Note: For years 1984 - 1998, see Industry Analysis Division, Wireline Competition Bureau, Trends in Telephone Service (August 2003).
1 Implemenation dates after 2009 are scheduled dates.2 The NANPA was able to reclaim area code 835. See Planning Letter 344.3 The NANPA was able to reclaim area code 445. See Planning Letter 332.
Source: North American Numbering Plan Administrator (NANPA), which can be accessed at www.nanpa.com [19]. Planning letters can be found at www.nanpa.com/planning_letters/index.html [20].
Numbering Resource Utilization in the United States 46
Number of Digits Necessary to Dial Local and Toll Calls from Wireline Phones
Dialing 1 +
1 + 10 24
Source: NPA database. The database is available at www.nanpa.com/area_codes/index.html [11]. U.S. Federal Communications Commission
Numbering Resource Utilization in the United States 47
Notes to Table 27
In area code 256, 659 and 938, 10-digit dialing is used.
In area code 659, 1+10-digit dialing is used.
In area codes 327, 10-digit dialing is used.
In area codes 310, 442, 424, 657, 714, 747, 760 and 818, 1+10-digit dialing is used.
In area codes 303 and 720, 10-digit dialing is used.
In area codes 475 and 959, 10-digit dialing is used.
In area codes 305, 321, 407, 689, 754, 786, and 954, 10-digit dialing is used.
In area codes 404, 470, 678, 762, 706 and 770, 10-digit dialing is used.
In area codes 224, 331, 464, 447, 630, 779, 815, 847 and 872, 1+ 10-digit dialing is used.
In addition, in area code 770, 10-digit dialing is used.
In area codes 270, 364 and 502, 7-digit dialing is used.
In area code 413, 7-digit dialing is used.
In area codes 248, 679 and 947, 10-digit dialing is used.
In area codes 218, 320, and 507, 7-digit dialing is used.
In area codes 601 and 769, 10-digit dialing is used.
In area code 557 and 975, 10-digit dialing is used.
In area code 531, 10-digit dialing is used.
In area codes 609, 856, and 908, 7-digit dialing is used.
In area codes 212, 347, 646, 718, 917 and 929, 1+10 digit dialing is used.
In area codes 704, 980 and 984, 10-digit dialing is used.
In area codes 234, 283, 330, 380, 419, and 567, 10-digit dialing is used.
In area code 539, 10-digit dialing is used.
In area code 541, 7-digit dialing is used.
In area codes 570, 717, and 814, 7-digit dialing is used.
In some area codes, local calls to some other area codes may be dialed using 10 digits.
In area codes 615 and 931, 7-digit dialing is used.
In area codes 214, 281, 430, 469, 682, 713, 817, 832, 903, and 972, 10-digit dialing is used.
In area code 435, 7-digit dialing is used.
In area codes 571 and 703, 10-digit dialing is used.
In area code 564, 10-digit dialing is used.
In area code 274 and 534, 10-digit dialing is used.
Numbering Resource Utilization in the United States 48
Customer Response Publication: Numbering Resource Utilization in the United States (Data as of June and September 2010) You can help us provide the best possible information to the public by completing this form and returning it to the Industry Analysis & Technology Division of the FCC's Wireline Competition Bureau. 1. Please check the category that best describes you: ____ press ____ current telecommunications carrier ____ potential telecommunications carrier ____ business customer evaluating vendors/service options ____ consultant, law firm, lobbyist ____ other business customer ____ academic/student ____ residential customer ____ FCC employee ____ other federal government employee ____ state or local government employee ____ Other (please specify) 2. Please rate the report: Excellent Good Satisfactory Poor No opinion Data accuracy (_) (_) (_) (_) (_) Data presentation (_) (_) (_) (_) (_) Timeliness of data (_) (_) (_) (_) (_) Completeness of data (_) (_) (_) (_) (_) Text clarity (_) (_) (_) (_) (_) Completeness of text (_) (_) (_) (_) (_) 3. Overall, how do you Excellent Good Satisfactory Poor No opinion rate this report? (_) (_) (_) (_) (_) 4. How can this report be improved? 5. May we contact you to discuss possible improvements? Name: Telephone #: To discuss the information in this report, contact: 202-418-0940 or for users of TTY equipment, call 202-418-0484 Fax this response to or Mail this response to 202-418-0520 FCC/WCB/IATD, Mail Stop 1600 F Washington, DC 20554 ← Previous page
Source URL: http://www.fcc.gov/document/fcc-releases-telephone-numbering-resource-utilization-report-4
Links:[1] https://apps.fcc.gov/edocs_public/attachmatch/DOC-319997A1.doc
[2] https://apps.fcc.gov/edocs_public/attachmatch/DOC-319997A1.pdf
[3] https://apps.fcc.gov/edocs_public/attachmatch/DOC-319997A1.txt
[4] http://www.bcpiweb.com
[5] http://www.fcc.gov/wcb/stats
[6] http://www.nanpa.com/npa/allnpas.zip
[7] http://www.fcc.gov/formpage.html
[8] http://www.nanpa.com/reports/reports_cocodes_assign.html
[9] http://www.fcc.gov/wcb/iatd/comp.html
[10] http://hraunfoss.fcc.gov/edocs_public/attachmatch/DA-10-1117A1.pdf
[11] http://www.nanpa.com/area_codes/index.html
[12] http://www.fcc.gov/wcb/iatd/number.html
[13] http://hraunfoss.fcc.gov/edocs_public/attachmatch/FCC-11-103A1.doc
[14] mailto:craig.stroup@fcc.gov
[15] mailto:john.vu@fcc.gov
[16] http://www.nanpa.com/reports/reports_cocodes_actStatus.html
[17] http://www.sms800.com/PublicContent.aspx?Text=2008&amp;URL=Shared+Documents%2fPublic%2fNews%2f2008&amp
[18] http://www.fcc.gov/wcb/iatd/trends.html
[19] http://www.nanpa.com
[20] http://www.nanpa.com/planning_letters/index.html