Document:

<PAGE>

                                                                    EXHIBIT 10.4

                                                               No. BSG9902-014R1

                                                              Date: JUNE 8, 1999

SPRINT

                                                                     Page 1 of 5

                     CUSTOM SERVICE AGREEMENT ("AGREEMENT")

Customer Name:  Fastnet Corp
Address:   3864 Courtney Street
           Bethlehem, PA  18017

--------------------------------------------------------------------------------

Sprint Communications Company L.P. ("Sprint"), a limited partnership, offers to
provide the Services in Section 2 under the terms and conditions in this
Agreement. This Agreement and any information concerning its terms and
conditions are Sprint's proprietary information and are governed by the parties'
nondisclosure agreement. The parties' nondisclosure agreement term is extended
to be coterminous with the Agreement Term. Customer agrees not to disclose this
Agreement or any information in this Agreement to any third party.

1.       TERM - The Term is 36 months, and will start on the first day of the
         first billing month after the parties sign this Agreement
         ("Commencement Date").

2.       SERVICES - "Services" means the applicable Sprint offerings that are
         specially priced under this Agreement. The Services are Sprint IP
         Dedicated Services.

3.       MINIMUM SERVICE COMMITMENT ("MSC") - MSC is the amount of Services that
         Customer commits to purchase during a specified time period. During
         each billing month of the Term, Customer's Minimum Monthly Commitment
         ("MMC") is $95,000.

         MSC CONTRIBUTORY SERVICES - The Services that contribute to Customer's
         MSC are Sprint IP Dedicated Services.

         MSC SHORTFALL LIABILITY - If Customer fails to meet its MMC, unless
         caused by Sprint's material failure to perform under this Agreement,
         Customer will pay Sprint, in addition to other applicable charges, the
         difference between the MMC and Customer's actual MSC Contributory
         Services Usage Charges for each period in which Customer does not
         achieve the MMC.

4.       QUALIFICATIONS - To receive special pricing under this Agreement,
         Customer will meet the following qualifications on the Commencement
         Date. If Customer does not meet these qualifications, Sprint may
         terminate this Agreement.

         a.       Customer will have at least 1 Sprint-provided DS3 local access
                  line for Sprint Services in NPA-NXX 610-289 or successor
                  NPA-NXX.

5.       CONDITIONS - During each billing month Customer will meet the following
         conditions to receive all benefits under this Agreement. If Customer
         does not meet any one of these conditions, Sprint may adjust Customer's
         Services charges or terminate this Agreement.

         a.       Customer will have at least 1 Sprint-provided OC3 local access
                  line for Sprint Services in NPA-NXX 610-289 or successor
                  NPA-NXX.

         b.       Customer must be headquartered in the State of Pennsylvania.

6.       ADDITIONAL PROVISIONS -

         At any time after the 12th billing month of the Term, Customer may
         request once that Sprint review Customer's pricing under the Agreement
         and determine if Customer is eligible to receive decreased rates or
         Discounts for Domestic Sprint IP Dedicated Services. Any rate decrease
         may depend on Customer's agreement to adjust this Agreement's Term or
         MSC.

<PAGE>

                                                                    EXHIBIT 10.4

                                                               No. BSG9902-014R1
                                                              Date: JUNE 8, 1999

SPRINT

                                                                     Page 2 of 5

7.  SERVICES CHARGES -

a.       PRICING COMPONENTS FOR DOMESTIC SPRINT IP SERVICES

                  Domestic Sprint IP Services consist of Internet (public) and
                  Intranet (corporate LAN) network access to allow remote users
                  to dial-in (via local or toll-free access) for access to hosts
                  or other resources available on these networks. The following
                  are the primary price components of the standard Domestic
                  Sprint IP Services offerings.

                  1)       DIAL ACCESS CHARGES - Sprint will charge customer a
                           Usage Charge per remote user per hour for either
                           local or toll free dial access. The hourly rates
                           cover access at any time from any available city.
                           Dial access Usage Charges do not include local
                           telephone message and toll charges.

                  2)       SPRINT IP DEDICATED PORT CHARGES - Sprint will charge
                           customer a one-time installation charge and monthly
                           recurring charges per Sprint IP Dedicated port for:
                           (a) local access facilities (per Sprint FCC Tariff
                           No. 8), (b) the Sprint IP Dedicated port and (c)
                           Customer Premise Equipment ("CPE") required for each
                           Sprint IP Dedicated port.

                  3)       USER ID CHARGES - Sprint will charge customer a
                           monthly charge per user ID for assignment and
                           administration of the customer-managed user IDs with
                           fixed addressing or Sprint-managed user IDs. Sprint
                           may charge customer a monthly charge per user ID for
                           customer-managed user IDs with dynamic addressing
                           subject to customer's specific pricing structure.

                  4)       CPE - Certain CPE may be used with Sprint IP
                           Services. Customer may purchase (at a one-time
                           purchase price) or rent (at a monthly recurring
                           rental charge) CPE from Sprint with a Sprint CPE
                           order form. Sprint must certify customer-provided
                           CPE. Sprint will charge customer a one-time
                           installation charge for CPE installed by Sprint.

                  5)       FRAME RELAY GATEWAY CHARGES - For Frame Relay
                           gateways to the Internet or Intranet, Sprint will
                           charge customer a one-time charge and a monthly
                           recurring charge for each Sprint Frame Relay Burst
                           Express PVC.

                  6)       USAGE CHARGE(S) - Usage Charges are the variable
                           recurring charges for use of Sprint's interexchange
                           communications network, determined by customer's
                           amount of telecommunications services used. Unless
                           expressly stated in this Agreement, Usage Charges do
                           not include taxes, interest, surcharges, access line
                           charges, access facilities charges, other charges
                           associated with access, fixed recurring charges,
                           feature charges, operator services charges, directory
                           assistance charges, installation charges, account
                           charges, set up fees, report charges, and other
                           non-recurring charges.

         b.       Domestic Sprint IP Dedicated Services Pricing: customer will
                  comply with Sprint's Standard terms and conditions for
                  Domestic Sprint IP Services (incorporated into this
                  agreement).Customer will receive the following charges for
                  these services:

<PAGE>

                                                                    EXHIBIT 10.4
                                                               No. BSG9902-014R1
                                                              Date: JUNE 8, 1999

SPRINT

                                                                     Page 3 of 5

                     CUSTOM SERVICE AGREEMENT ("AGREEMENT")

Customer Name:  Fastnet Corp
Address:   3864 Courtney Street
           Bethlehem, PA  18017

--------------------------------------------------------------------------------

                  1)       Sprint will charge Customer a $95,000 fixed monthly
                           recurring charge for each Domestic OC3 Sprint IP
                           Dedicated port, with an individual order term of 3
                           years or longer,

                  2)       installed or in service during the Term. Orders for
                           all IMUX, FDS3, 45Mbps and OC3 Sprint IP Dedicated
                           ports will be accepted in Sprint's discretion.

                  3)       The monthly recurring charge above does not include
                           charges for Local Access Facilities, CPE, and other
                           charges described in the Standard Provisions of this
                           Agreement. Charges for Local Access Facilities are in
                           Sprint FCC Tariff No. 8.

                  4)       Customer is not eligible for standard order term
                           discounts.

         d.       Sprint will waive the non-recurring charge of $6,000 for each
                  Dedicated IP Port upgrade during the Term.

         e.       Sprint will waive Domestic OC3 Sprint IP Dedicated port
                  installation charge (non-recurring) on ports installed with an
                  individual order term of 3 years during the Term. This
                  installation charge does not include installation charges for
                  Local Access Facilities and CPE.

         Local access lines, and Ports, installed under subsection 7e. above are
         subject to a 36 month continuous use requirement. If Customer
         disconnects any local access line, or Port receiving an installation
         waiver prior to the conclusion of the minimum required continuous use
         period, Customer must pay a prorated portion of the waived installation
         charges based upon the number of months remaining in the period.

                  [REMAINDER OF PAGE LEFT INTENTIONALLY BLANK]

<PAGE>

                                                                    EXHIBIT 10.4
                                                               No. BSG9902-014R1
                                                              Date: JUNE 8, 1999

SPRINT

                                                                     Page 4 of 5

                               STANDARD PROVISIONS

1.       TARIFF APPLICABILITY. Capitalized terms are defined in this Agreement
         or in applicable Sprint FCC Tariffs. Rates, charges and discounts for
         call types, Service elements, features, and Services not in this
         Agreement are in the applicable Sprint Base Service Tariff or public
         price list.

2.       FIXED RATES. Fixed rates will remain fixed for the Term. Percentage
         discounts will remain fixed for the Term, but Sprint may modify the
         list price for non-tariffed Services against which Sprint applies
         discounts.

3.       TARIFF WITHDRAWAL. If Sprint withdraws any tariff that applies to
         Services in this Agreement, the tariff terms and conditions then in
         effect will continue to apply to this Agreement. After Sprint withdraws
         any applicable tariff, this Agreement will control over any
         inconsistent provision in the withdrawn tariff. But Sprint may modify
         any list price that is not fixed by this Agreement.

4.       CREDIT APPROVAL. Customer is subject to credit approval and may be
         required to submit a deposit.

5.       REGULATORY PROGRAMS. Sprint may impose additional charges on Customer
         to recover amounts Sprint is required by regulatory or other
         governmental authorities to collect on behalf of or pay to others in
         support of statutory or regulatory programs. Examples of these programs
         include, but are not limited to, the Universal Service Fund, the
         Presubscribed Interexchange Carrier Charge, and compensation to
         payphone service providers for use of their payphones to access
         Sprint's service.

6.       NOTICE. Any notice required under this Agreement or related to a
         dispute must be submitted in writing to the appropriate party's address
         shown below. If a notice relates to a dispute, Customer must provide a
         copy to Sprint at 8140 Ward Parkway, Kansas City, Missouri 64114,
         Attention: Law Department/Marketing and Sales.

7.       RELIANCE. In accepting this Agreement Customer is not relying on any
         representations or promises not included in this Agreement.

         When signed by the parties this Agreement will: (a) constitute the
         parties' entire understanding regarding Services; and (b) supersede all
         agreements or discussions, oral or written, regarding Services.

8.       ORDERS. Customer will order Services pursuant to Sprint's standard
         ordering procedures, subject to Sprint's acceptance, that may include
         signing Sprint's standard Order for Data Communication Service form or
         other Sprint-designated form ("Order"). The Sprint Tariffs, if
         applicable, and the Sprint standard terms and conditions for Services
         (incorporated into this Agreement) also apply to Sprint's provision of
         Services.

9.       DEFINITIONS. (a) The term "Domestic" means the 48 contiguous states of
         the United States and the District of Columbia. (b) "Usage Charges" are
         the variable recurring charges or fixed monthly recurring charge for
         use of Sprint's interexchange communications network. Sprint calculates
         Usage Charges by the amount of telecommunications network service used
         by Customer (units of time or a similar measure). Except as expressly
         provided in this Agreement, Usage Charges excludes taxes, interest,
         surcharges, access line charges, access facilities charges, other
         charges associated with access fixed recurring charges (other than
         specified interexchange circuit charges), feature charges, operator
         service surcharges, directory assistance charges, installation charges,
         account charges, set up fees, report charges, and other non-recurring
         charges.

10.      HEADINGS. Headings are for reference only and have no effect on any
         provision's meaning.

11.      COMMENCEMENT. To become effective this Agreement must be: (a) signed by
         a Customer representative; (b) delivered to Sprint on or before June
         30, 1999; and (c) signed by a Sprint officer or authorized designee.

12.      ALTERATIONS. Alterations to this Agreement will not be valid unless
         accepted in writing by a Sprint officer or authorized designee.

FASTNET CORPORATION                     SPRINT COMMUNICATIONS COMPANY L.P.
--------------------------------        ----------------------------------
By:    /s/ Phillip L. Weller            By   /s/ Steve Prout

   -----------------------------          ----------------------------

Name:  Phillip Weller                   Name:  Steve Prout

      --------------------------             -------------------------

Title:  VP-Engineering                  Title:  Regional Director

      --------------------------              ------------------------

Date:   6/10/99                         Date:    June 20, 1999
      --------------------------              -------------------------

Address:  3864 Courtney St., Ste 130    Address:  555 Croton Road
        -----------------------------            -----------------------

  Bethlehem, PA  18017                      King of Prussia, PA  19406
-----------------------------           ---------------------------------

<PAGE>

                                                           BROADBAND (T3 & OC-N)
                                                          CUSTOMER AUTHORIZATION

AIM # __ __ __ __ __ __ __ __ __ __                     CUST ID #  13068673

CUSTOMER NAME:  You Tools Corp.

              -----------------------------------------------------------------

CITY:  __________________________________________ STATE _______ ZIP ___________

SCA # OR DS3 REQUEST # _______________________ QUANTITY _______________________

CKT TYPE (T3 OR OC-N)  _________________________ CWD __________________________

ACCESS ARRANGEMENT:        / /  SPA       /X/ CPA TO POP      / /  CPA TO SWC

                           / /  SCVBA TO POP             / /  SCVBA TO SWC

/ / Customer Paid Expedite (X if Applicable) (Director/Sales Signature Required)

Reason For Expedite  __________________________________________________________

-------------------------------------------------------------------------------
Term Plan:        3 year
          --------------
Term Plan must be one of the approved options within the SCA or DS3 Request
Approval Document. Subject to availability.

DEDICATED ACCESS CHARGES                         MRC                          NR

Access Transport

                                         ----------------          -------------
ACF

                                         ----------------          -------------
COCF                                             *

                                         ----------------          -------------
EFC

                                         ----------------          -------------
M13 MUX (Sprint Or Vendor)

                                         ----------------          -------------
ISP (Internet Dedicated Access)                  *                        *

                                         ----------------          -------------
Expedite

                                         ----------------          -------------
Other

                                         ----------------          -------------

All Sprint charges and other charges set forth above are subject to change.
Terms and conditions are governed by the applicable Sprint tariffs, as they may
be amended from time to time. Additional terms and conditions set forth in
Special Customer Arrangement approvals shall apply to this circuit.

SPECIAL ACCESS SURCHARGE APPLICATION FOR EXEMPTION

The undersigned hereby certifies that he/she is an authorized representative of
the company named below and that the circuit herein is not inter-connected with
the local exchange through a Private Branch Exchange (PBX) or other device
actually capable of switching traffic to or from the local exchange. Therefore,
this circuit is exempted from the access surcharge.

The undersigned warrants the accuracy of this special access surcharge
application for exemption and the undersigned shall defend, indemnify and hold
Sprint Communications Company L.P., a Delaware Limited Partnership, (Sprint)
harmless from and against any damages, costs or expenses which Sprint may incur
by submitting this application for exemption.

It is acknowledged that acceptance or rejection of this application will be the
sole responsibility of the local telephone company, and not Sprint.

                                                Customer Initial:    X      DKV

                                                                 --------------

                                ACCESS OPERATIONS

[*] WE ARE SEEKING CONFIDENTIAL TREATMENT OF THESE TERMS, WHICH HAVE BEEN
OMITTED. THE CONFIDENTIAL PORTION HAS BEEN FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION.

<PAGE>

By Signing below customer agrees to pay all of the above charges.

SPRINT APPROVAL                                      CUSTOMER APPROVAL

Sprint Signature:  /s/ Tom Duggan    Company Name:     You Tools Corp.
                 ------------------               ------------------------------
(Director Signature if Expedite):    Customer Signature: /s/ David K. Van Allen
                                 ----                   ------------------------
Print or Type Name:   Tom Duggan     Print or Type Name:    David Van Allen
                   -----------------                    ------------------------
Date:      10/21/97                  Date:        10/22/97
     -------------------------------      --------------------------------------

                                ACCESS OPERATIONS

<PAGE>

                                                           BROADBAND (T3 & OC-N)
                                                          CUSTOMER AUTHORIZATION

AIM # __ __ __ __ __ __ __ __ __ __      CUST ID # __ __ __ __ __ __ __ __ __ __

CUSTOMER NAME:    You Tools Corp.
                  --------------------------------------------------------------

CITY:             Philadelphia           STATE     PA      ZIP     19144
      -----------------------------------      -----------     -----------------

SCA # OR DS3 REQUEST #     00497029     QUANTITY           1
                       ----------------          -------------------------------

CKT TYPE (T3 OR OC-N)      T3              CWD          5/5/97
                       ----------------          -------------------------------

ACCESS ARRANGEMENT:        / /  SPA       /X/ CPA TO POP      / /  CPA TO SWC

                           / /  SCVBA TO POP             / /  SCVBA TO SWC

/X/ Customer Paid Expedite (X if Applicable) (Director/Sales Signature Required)

Reason For Expedite  ___________________________________________________________

--------------------------------------------------------------------------------
Term Plan:        3 Year

           -------------------

Term Plan must be one of the approved options within the SCA or DS3 Request
Approval Document. Subject to availability.

DEDICATED ACCESS CHARGES                          MRC                         NR

Access Transport

                                           -------------           -------------
ACF

                                           -------------           -------------
COCF                                             *                        *

                                           -------------           -------------
EFC

                                           -------------           -------------
M13 MUX (Sprint Or Vendor)

                                           -------------           -------------

ISP (Internet Dedicated Access)                  *                         *

                                           ------------            -------------
Expedite                                                                   *

                                           ------------            -------------
Other

                                           ------------            -------------

All Sprint charges and other charges set forth above are subject to change.
Terms and conditions are governed by the applicable Sprint tariffs, as they may
be amended from time to time. Additional terms and conditions set forth in
Special Customer Arrangement approvals shall apply to this circuit.

SPECIAL ACCESS SURCHARGE APPLICATION FOR EXEMPTION

The undersigned hereby certifies that he/she is an authorized representative of
the company named below and that the circuit herein is not inter-connected with
the local exchange through a Private Branch Exchange (PBX) or other device
actually capable of switching traffic to or from the local exchange. Therefore,
this circuit is exempted from the access surcharge.

The undersigned warrants the accuracy of this special access surcharge
application for exemption and the undersigned shall defend, indemnify and hold
Sprint Communications Company L.P., a Delaware Limited Partnership, (Sprint)
harmless from and against any damages, costs or expenses which Sprint may incur
by submitting this application for exemption.

It is acknowledged that acceptance or rejection of this application will be the
sole responsibility of the local telephone company, and not Sprint.

                                                   Customer Initial:    DVK

                                                                    -----------

By Signing below customer agrees to pay all of the above charges.

SPRINT APPROVAL                        CUSTOMER APPROVAL

Sprint Signature: /s/ Tom Duggan       Company Name:     FASTNET
                 ------------------                 --------------
(Director Signature                    Customer Signature: /s/ David Van Allen
if Expedite):_____________________                         -------------------

[*] WE ARE SEEKING CONFIDENTIAL TREATMENT OF THESE TERMS, WHICH HAVE BEEN
OMITTED. THE CONFIDENTIAL PORTION HAS BEEN FILED SEPARATELY WITH THE
SECURITIES AND EXCHANGE COMMISSION.

<PAGE>

Print or Type Name:    Tom Duggan       Print or Type Name:  David Van Allen

                   -------------------                      -------------------

Date:    4/15/97                        Date:        April 18, 1997
     ---------------------------------           ------------------------------

                                ACCESS OPERATIONS<PAGE>

                                                                    EXHIBIT 10.5

                          UUDIRECT T3 TIERED AGREEMENT

<TABLE>
<CAPTION>

Service1                        Monthly Fee             Start-up Charge2
--------                        -----------             ----------------
<S>     <C>                      <C>                    <C>

/ /      3 Mbps port             [$ * ]
/ /      6 Mbps port             [$ * ]
/ /      9 Mbps port             [$ * ]
/ /      12 Mbps port            [$ * ]
/ /      15 Mbps port            [$ * ]
/ /      18 Mbps port            [$ * ]
/ /      21 Mbps port            [$ * ]
/ /      24 Mbps port            [$ * ]
/ /      27 Mbps port            [$ * ]
/ /      30 Mbps port            [$ * ]
/ /      33 Mbps port            [$ * ]
/ /      36 Mbps port            [$ * ]
/ /      39 Mbps port            [$ * ]
/X/      45 Mbps port            [$ * ]

</TABLE>

PRICES ABOVE DO NOT INCLUDE ANY TELCO LINE CHARGES, EQUIPMENT COSTS,3 OR NETWORK
APPLICATIONS FEES.4

TERM COMMITMENT5

/X/      1-year Term

PAYMENT
If a Purchase Order is required, return the PO with this form and
provide PO#: _______________

BILLING PREFERENCE / / Bill my existing UUNET account number: ______________
/ / Bill to a new account number

                   PLEASE SIGN THIS AGREEMENT ON THE REVERSE.

---------------------------

1 Customer must provide 60 days' prior written notice to UUNET before
downgrading service to a lower tier. While Customer can resell Internet
connectivity, Customer cannot resell the service in its entirety to another
person or entity without the express prior written consent of UUNET. If
Customer resells Internet connectivity to end users, Customer is responsible
for: (i) providing the first point of contact for end user support inquiries;
(ii) providing software fulfillment to end users; (iii) running its own
primary and secondary domain name service ("DNS") for end users; (iv)
registering end users' domain names; (v) using BGP routing to the UUNET
Network, if requested by UUNET; (vi) collecting route additions and changes,
and providing them to UUNET; and (vii) registering with the appropriate
agency all IP addresses provided by UUNET to Customer that are allocated to
end users.

2 To ensure proper installation, UUNET will order all telco lines. A $500
surcharge applies to Customer-ordered lines. Installation may be scheduled
between the hours of 8AM and & 7PM ET Monday through Friday (excluding
holidays). If Customer requires installation outside of these hours UUNET
will charge an additional $500 fee.

3 UUNET is acting only as a reseller with respect to the hardware and
software offered under this Agreement ("Equipment"), which was manufactured
by a third party ("Manufacturer"). UUNET will provide first-level support for
Equipment, but will not repair or replace Equipment. Customer's use of the
Equipment is subject to the terms and conditions of the Manufacturer's end
user agreement. Should Customer purchase Equipment from UUNET, UUNET will
ship the current UUNET-tested version of the Equipment to the Customer.

4 Descriptions of the domain name, mail, new services, and other network
applications available in connection with this service, and the pricing and
additional terms applicable to these services, are set forth in the Network
Applications Fee Schedule available at www.uu.net/terms. UUNET reserves the
right to change the Network Applications Fee Schedule from time to time,
effective upon posting of the changes to the URL or other notice to Customer.

5 Discount applicable only to Monthly Fee. At the conclusion of the Term
Commitment, this Agreement shall continue in effect on a month-to-month basis
at UUNET's then-current list price for the service.

[*] We are seeking confidential treatment of these terms, which have been
omitted. The confidential portion has been filed separately with the
Securities and Exchange Commission.

<PAGE>

                          GENERAL TERMS AND CONDITIONS

1.   UUNET Technologies, Inc. ("UUNET") exercises no control over, and accepts
     no responsibility for, the content of the information passing through
     UUNET's host computers, network hubs and points of presence (the "UUNET
     Network"). EXCEPT AS EXPRESSLY SET FORTH IN SECTION 7 BELOW, UUNET (a)
     MAKES NO WARRANTIES OF ANY KIND, WHETHER EXPRESS OR IMPLIED, FOR THE
     SERVICES AND EQUIPMENT IT IS PROVIDING, AND (b) DISCLAIMS ANY WARRANTY OF
     TITLE, MERCHANTABILITY, NON-INFRINGEMENT OR FITNESS FOR A PARTICULAR
     PURPOSE. Use of any information obtained via the UUNET Network is at
     Customer's own risk. UUNET specifically denies any responsibility for the
     accuracy or quality of information obtained through its services. UUNET
     shall not be liable for any delay or failure in performance due to Force
     Majeure, which shall include without limitation acts of God, earthquake,
     labor disputes, changes in law, regulation or government policy, riots,
     war, fire, epidemics, acts or omissions of vendors or suppliers, equipment
     failures, transportation difficulties, or other occurrences which are
     beyond UUNET's reasonable control.

2.   All use of the UUNET Network and the service must comply with the
     then-current version of the UUNET Acceptable Use Policy ("Policy") which is
     made a part of this Agreement and is available at the following URL:
     www.uu.net/terms. UUNET reserves the right to amend the Policy from time to
     time, effective upon posting of the revised Policy at the URL or other
     notice to Customer. UUNET reserves the right to suspend the service or
     terminate this Agreement effective upon notice for a violation of the
     Policy. Customer agrees to indemnify and hold harmless UUNET from any
     losses, damages, costs or expenses resulting from any third party claim or
     allegation ("Claim") arising out of or relating to use of the service,
     including any Claim which, if true, would constitute a violation of the
     Policy.

3.   NEITHER PARTY SHALL BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL,
     PUNITIVE OR CONSEQUENTIAL DAMAGES THAT RESULT FROM CUSTOMER'S OR CUSTOMER'S
     USERS' USE OF THE UUNET NETWORK AND THE SERVICE INCLUDING, WITHOUT
     LIMITATION, ANY SUCH DAMAGES FOR LOSS OF DATA RESULTING FROM DELAYS,
     NON-DELIVERIES, MISDELIVERIES OR SERVICE INTERRUPTIONS. Notwithstanding
     anything to the contrary stated in this Agreement, Customer's sole remedies
     for any claims relating to this service or the UUNET Network are set forth
     in Section 7 below.

4.   Networks assigned from a UUNET net-block are non-portable. Network space
     allocated by UUNET must be returned to UUNET in the event Customer
     discontinues service.

5.   Payment is due 30 days after date of invoice. Accounts are in default if
     payment is not received within 30 days after date of invoice. If payment is
     returned to UUNET unpaid Customer is immediately in default and subject to
     a returned check charge of $25 from UUNET. Accounts unpaid 60 days after
     date of invoice may have service interrupted or terminated. Such
     interruption does not relieve Customer of the obligation to pay the Monthly
     Fee. Only a written request to terminate Customer's service relieves
     Customer of the obligation to pay the Monthly Fee. Accounts in default are
     subject to an interest charge on the outstanding balance of the lesser of
     1.5% per month or the maximum rate permitted by law. Customer agrees to pay
     UUNET its reasonable expenses, including attorney and collection agency
     fees, incurred in enforcing its rights under this Agreement. Prices are
     exclusive of any taxes which may be levied or assessed upon the Equipment
     or services provided hereunder. Any such taxes shall be paid by Customer.
     If Customer is exempt from otherwise applicable taxes, Customer must submit
     its tax identification number and exemption certificate at the same time it
     submits this Agreement.

6.   Billing for UUNET service will commence when a UUNET hub and a functioning
     telephone circuit are prepared to route IP packets to Customer's site. The
     Start-up Charge is invoiced upon acceptance of this Agreement by UUNET.
     Charges for Equipment shall be invoiced upon shipment. Service is invoiced
     monthly in advance, and may be canceled only by 60 days' advance written
     notice. In the

<PAGE>

     event of early cancellation of a Term Commitment, Customer will be required
     to pay 75% of UUNET's standard Monthly Fee for each month remaining in the
     Term Commitment. UUNET reserves the right to change the rates by notifying
     Customer 60 days in advance of the effective date of the change.

7.   The Service Level Agreement ("SLA") for this service, which is made a part
     of this Agreement, is set forth at www.uu.net/terms and applies only to
     customers agreeing to a Term Commitment of at least one year. UUNET
     reserves the right to amend the SLA from time to time effective upon
     posting of the revised SLA to the URL or other notice to Customer;
     provided, that in the event of any amendment resulting in a material
     reduction of the SLA's service levels or credits, Customer may terminate
     this Agreement without penalty by providing UUNET written notice of
     termination during the 30 days following notice of such amendment. The SLA
     sets forth Customer's sole remedies for any claim relating to this service
     or the UUNET Network, including any failure to meet any guarantee set forth
     in the SLA. UUNET's records and data shall be the basis for all SLA
     calculations and determinations. Notwithstanding anything to the contrary,
     the maximum amount of credit in any calendar month under the SLA shall not
     exceed the Monthly Fee and/or Start-up Charge which, absent the credit,
     would have been charged for UUNET service that month (collectively the
     "UUNET Fees"); provided, that the maximum amount of credit for failure to
     meet the Availability Guarantee shall not exceed the sum of (a) the UUNET
     Fees, plus (b) the telephone company line charge which, absent the credit,
     would have been charged for such month.

8.   Neither party may use the other party's name, trademarks, tradenames or
     other proprietary identifying symbols without the prior written approval of
     the other party. Neither party may assign or transfer any of its rights or
     obligations under this Agreement without the express, prior written consent
     of the other party; provided, that either party may assign or transfer this
     Agreement to any affiliate of such party upon advance written notice to the
     other party. No failure on the part of either party to exercise, and no
     delay in exercising, any right or remedy hereunder shall operate as a
     waiver thereof nor shall any single or partial exercise of any right or
     remedy hereunder preclude any other or further exercise thereof or the
     exercise of any other right or remedy granted hereby or by law.

9.   MCI WORLDCOM, Inc. or its affiliates or subcontractors may perform some or
     all of UUNET's duties and/or obligations hereunder.

10.  This Agreement supersedes all previous representations, understandings or
     agreements and shall prevail notwithstanding any variance with terms and
     conditions of any order submitted. Acceptance of this Agreement by UUNET
     may be subject, in UUNET's absolute discretion, to satisfactory completion
     of a credit check. Activation of service shall indicate UUNET's acceptance
     of this Agreement. Use of the UUNET Network constitutes acceptance of this
     Agreement.

AGREED AND ACCEPTED BY CUSTOMER:

Signature:  /s/ Rafe Scheinblum     Company Name:  FASTNET
          ----------------------                 ----------------------------
Printed Name:  Rafe Scheinblum      Address:  3864 Courtney St. Suite 130
             -------------------             --------------------------------
Title:  EVP, Operations             Bethlehem, PA 18017
      --------------------------    -----------------------------------------
Date:  8/11/99                      Telephone  610-266-6700  Fax  610-807-0902
     ---------------------------               ------------      ------------

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00001-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00001-of-00352.parquet"}]]