Document:

exv10w50

Pursuant to 17 CFR 240.24b-2, confidential information has
been omitted in places marked “[* * *]” and has been filed separately with the Securities and
Exchange Commission pursuant to a Confidential Treatment Application filed with the Commission.

Exhibit 10.50

May 5, 2008

Mr. Mark Foster

[* * *]

Re: Status Change

Dear Mark:

This letter agreement (this “Agreement”) confirms and sets forth the terms of your change of status
with Neustar, Inc. (the “Company”), effective on May 7, 2008 (the “Status Change Date”), from a
full-time employee to consultant (the “Status Change”). The terms of your consultancy will be set
forth in a separate agreement to be entered into between you and the Company on or prior to the
Status Change Date (the “Consulting Agreement”).

1. Prior to the Status Change Date you will remain a full-time employee of the Company in your
current capacity and with the same duties and responsibilities you currently have, subject to the
instructions and directions of the Company. You acknowledge that you will cooperate as reasonably
requested by the Company to facilitate an orderly transition of your employment duties.

2. You hereby acknowledge and agree that as of the Status Change Date, the Employment Continuation
Agreement between you and the Company dated April 8, 2004 shall terminate and be of no further
force and effect and that you shall have no rights to any severance or termination payments, or any
other compensation or benefits thereunder, on account of the Status Change.

3. The Status Change shall not constitute a termination of your service with the Company with
respect to awards granted to you under the NeuStar, Inc. 1999 Equity Incentive Plan or the NeuStar,
Inc. 2005 Stock Incentive Plan. Accordingly, all awards outstanding as of the Status Change Date
shall continue to vest, be exercisable, or be forfeited in accordance with the terms and conditions
of the applicable plan and award agreement.

4. Notwithstanding Paragraph 3 above, you hereby acknowledge that the Status Change Date is the
termination date of your employment for purposes of participation in and coverage under all benefit
plans and programs sponsored by or through the Company, including without limitation the NeuStar,
Inc. 2007 Key Employee Severance Pay Plan (the “Severance Plan”), and that as of the Status Change
Date you shall only be entitled to receive from the Company: (a) any earned but unpaid base salary
through the Status Change Date, paid in accordance with the Company’s standard payroll practices;
(b) reimbursement for any unreimbursed business expenses properly incurred by you through the
Status Change Date in accordance with Company policy; (c) payment for any accrued but unused
vacation time (PTO) through the Status Change Date in accordance with Company policy; and (d) such
vested accrued benefits, and other payments, if any, as to which you may be entitled under, and in
accordance with the terms and conditions of, the employee benefit arrangements, plans and programs
of the Company as of the

1

 

Pursuant to 17 CFR 240.24b-2, confidential information has
been omitted in places marked “[* * *]” and has been filed separately with the Securities and
Exchange Commission pursuant to a Confidential Treatment Application filed with the Commission.

Status Change Date. For the avoidance of doubt, you hereby acknowledge and agree that you are not
entitled to receive any payments or benefits under the Severance Plan as a result of the Status
Change.

5. Subject to your (a) timely election of continuation coverage under the Consolidated Omnibus
Budget Reconciliation Act of 1985, as amended (“COBRA”) with respect to the Company’s group health
insurance plans in which you participated immediately prior to the Status Change Date (“COBRA
Continuation Coverage”), and (b) payment of premiums for such plans, the Company shall provide
COBRA Continuation Coverage for you and your eligible dependents currently covered under such plans
and shall reimburse a portion of the premiums for such plans (corresponding to the portion of such
premiums the Company pays for its active employees, up to a maximum of $11,000 per year) until the
earlier of (i) you or your eligible dependents, as the case may be, ceasing to be eligible under
COBRA or the applicable underlying plan, and (ii) 18 months following the Status Change Date.

6. You hereby agree that on or prior to the Status Change Date you will enter into an Agreement
Respecting Noncompetition and Nonsolicitation with the Company in the form attached hereto as
Exhibit A.

7. You hereby agree that you will notify the Company at least 10 days prior to commencing any other
employment or material consulting activities. If the Company in good faith determines that such
activities will materially interfere with your ability to timely and adequately perform your
services hereunder (or thereafter they so interfere), the Company will notify you. The Company may
terminate your employment or consultancy hereunder if you perform such activities (or do not cease
such activities within 10 days) after being so notified.

8. Miscellaneous.

     (a) Entire Agreement. This Agreement, together with the Consulting Agreement,
contains the entire understanding and agreement between the parties concerning the subject matter
hereof and supersedes all prior agreements, understandings, discussions, negotiations and
undertakings, whether written or oral, between you and the Company with respect thereto.

     (b) Amendment; Waiver. This Agreement may be amended only by an instrument in writing
signed by the parties hereto, and any provision hereof may be waived only by an instrument in
writing signed by the party against whom or which enforcement of such waiver is sought. The
failure of either party hereto at any time to require the performance by the other party hereto of
any provision hereof shall in no way affect the full right to require such performance at any time
thereafter, nor shall the waiver by either party hereto of a breach of any provision hereof be
taken or held to be a waiver of any succeeding breach of such provision or a waiver of the
provision itself or a waiver of any other provision of this Agreement.

     (c) Assignment. This Agreement is binding on and is for the benefit of the parties
hereto and their respective successors, heirs, executors, administrators and other legal
representatives. Neither this Agreement nor any right or obligation hereunder may be assigned by
you. As used in the Agreement, the “Company” shall mean both the Company as defined above and any
successor that assumes and agrees to perform this Agreement, by operation of law or otherwise.

2

 

Pursuant to 17 CFR 240.24b-2, confidential information has
been omitted in places marked “[* * *]” and has been filed separately with the Securities and
Exchange Commission pursuant to a Confidential Treatment Application filed with the Commission.

     (d) Withholding. The Company may withhold from any amounts payable to you hereunder
all federal, state, city or other taxes that the Company may reasonably determine are required to
be withheld pursuant to any applicable law or regulation.

     (e) Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE
WITH THE LAWS OF THE COMMONWEALTH OF VIRGINIA, WITHOUT REFERENCE TO ITS PRINCIPLES OF CONFLICTS OF
LAW.

     (f) Severability. All provisions of this Agreement are intended to be severable. In
the event any provision or restriction contained herein is held to be invalid or unenforceable in
any respect, in whole or in part, such finding will in no way affect the validity or enforceability
of any other provision of this Agreement. The parties hereto further agree that any such invalid
or unenforceable provision will be deemed modified so that it will be enforced to the greatest
extent permissible under law, and to the extent that any court of competent jurisdiction determines
any restriction herein to be unreasonable in any respect, such court may limit this Agreement to
render it reasonable in light of the circumstances in which it was entered into and specifically
enforce this Agreement as limited.

     (g) Legal Representation. You acknowledge and confirm that you have had the
opportunity to seek such legal, financial and other advice and representation as you have deemed
appropriate in connection with this Agreement.

     (h) Counterparts. This Agreement may be executed in several counterparts (including
via facsimile or PDF), each of which shall be deemed an original, but all of which shall constitute
one and the same instrument.

     (i) Acceptance of Agreement. You may accept this Agreement by signing it and
returning it to Doug Arnold, Senior Vice President — Human Resources, NeuStar, Inc., 46000 Center
Oak Plaza, Sterling, VA 20166, to be received not later than 5 p.m. on May 6, 2008.

	 	 	 	 	 
	 	 	NEUSTAR, INC.
	 
	 	 	 	 
	 

	 	By:
	 	/s/ Jeffrey A. Babka
	 

	 	 	 	 
	 	 	Name: Jeffrey A. Babka
	 	 	Title: Senior Vice President and Chief
	 	 	            Financial Officer

	 	 	 
	ACKNOWLEDGED AND AGREED:
	 
	 	 
	/s/ Mark Foster
 

Mark Foster

	 	 
	 
	 	 
	Date: May 6, 2008

3

 

Pursuant to 17 CFR 240.24b-2, confidential information has
been omitted in places marked “[* * *]” and has been filed separately with the Securities and
Exchange Commission pursuant to a Confidential Treatment Application filed with the Commission.

Exhibit A

AGREEMENT RESPECTING

NONCOMPETITION AND NONSOLICITATION

     This AGREEMENT RESPECTING NONCOMPETITION AND NONSOLICITATION (this “Agreement”) is entered
into this 5th day of May 2008, by and between Mark Foster (“Foster”) and NeuStar, Inc.
(together with its affiliates and successors, “NeuStar”) (hereinafter collectively referred to as
“the Parties”).

     WHEREAS, Foster has been employed by NeuStar since November 1999 and has entered into a Status
Change Agreement, dated May 5, 2008, whereby he will become a consultant of NeuStar on May 7, 2008
(the “Status Change Date”);

     NOW, THEREFORE, in consideration of the compensation and benefits to be provided to Foster by
NeuStar as an employee through the Status Change Date and as a consultant on and after the Status
Change Date, and the mutual covenants described below, the Parties agree as follows:

     1. Noncompetition. Foster acknowledges that his employment with NeuStar has created a
relationship of confidence and trust between Foster and NeuStar. During the term of Foster’s
employment, Foster has obtained Confidential Information (within the meaning of Paragraph 3) with
regard to NeuStar, its officers, directors and employees and/or its clients, customers and vendors
and has obtained contacts, training and experience. Foster acknowledges and agrees that there is a
substantial probability that such Confidential Information, contacts, training and experience could
be used to the substantial advantage of a competitor of NeuStar and/or to NeuStar’s substantial
detriment. Therefore, in consideration for Foster’s continued employment through the Status Change
Date and his retention as a consultant on and after the Status Change Date, Foster agrees that
during his employment and consultancy with NeuStar and prior to the date which is the later of
(a) 18 months after the Status Change Date or (b) 12 months after the termination of Foster’s
consultancy with NeuStar, with respect to any state or country in which NeuStar engaged in business
during Foster’s employment or consultancy term, Foster shall not participate or engage, directly or
indirectly, for himself or on behalf of or in conjunction with any person, partnership,
corporation, or other entity, whether as an employee, agent, officer, director, shareholder,
partner, joint venturer, investor or otherwise, in any business competitive with a business
undertaken by NeuStar or by Foster in relation to his work for NeuStar at any time during Foster’s
employment or consultancy term. For purposes of this paragraph, such business shall include but
not be limited to the activities of numbering, number management, internet domains, web performance
and network monitoring, communication registries, and infrastructure services relating to mobile
data and messaging.

     Nowithstanding the foregoing, nothing herein shall prohibit Foster from being employed by, or
holding a passive or indirect equity ownership in, any person or entity that has operations that
compete with NeuStar so long as Foster does not personally participate in the management of, or
provide strategic advice to, the operations of such person or entity that compete with NeuStar.

     2. Nonsolicitation. Foster agrees that during his employment and consultancy with
NeuStar and for 18 months thereafter, Foster shall not engage in Solicitation, whether for

1

 

Pursuant to 17 CFR 240.24b-2, confidential information has
been omitted in places marked “[* * *]” and has been filed separately with the Securities and
Exchange Commission pursuant to a Confidential Treatment Application filed with the Commission.

Foster’s own account or for the account of any other individual, partnership, firm,
corporation or other business organization (other than NeuStar). “Solicitation” means any of the
following, or an attempt to do any of the following: (i) recruiting, soliciting or inducing any
non-clerical employee or consultant of NeuStar (including, but not limited to, any independent
sales representative or organization) to terminate his or her employment with, or otherwise cease
or reduce his or her relationship with, NeuStar; (ii) hiring or assisting another person or entity
to hire any non-clerical employee or consultant of NeuStar or any person who within 12 months
before was such a person; or (iii) soliciting or inducing any person or entity (including any
person who within the preceding 12 months was a customer or client of NeuStar) to terminate,
suspend, reduce, or diminish in any way its relationship with or prospective relationship with
NeuStar. The placement of general classified or “help wanted” advertisements and/or general
solicitations to the public at large, and the hiring of any person who responds to such
advertisements or solications, shall not constitute a violation of this Paragraph 2 unless Foster’s
name is contained in such advertisements or solicitations.

     3. Nondisparagement. Each Party agrees not to issue or communicate, directly or
indirectly, any public statement (or statement likely to become public) that disparages,
denigrates, maligns or impugns the other Party or its officers, directors, employees, products or
services, except truthful responses to legal process or governmental inquiry or by Foster in
carrying out his duties for NeuStar.

     4. Consideration. Foster acknowledges and agrees that the covenants provided for in
this Agreement, including the term of the restricted period, the range of activities and the
geographic area encompassed in such covenants, are reasonable and necessary in order to protect
NeuStar in the conduct of its business and the utilization of its assets. Foster agrees that the
prohibitions and restrictions in this Agreement will not prevent Foster from earning a livelihood
after the termination of his employment and consultancy. Foster further agrees that his continued
employment and consultancy, and the compensation and benefits to be provided by NeuStar in
connection with such employment and consultancy, are in consideration of his entering into this
Agreement.

     5. Interpretation. If any restriction with regard to this Agreement is found by a
court of competent jurisdiction to be invalid or unenforceable because it extends for too long a
period of time or over too great a range of activities or in too broad a geographic area, it shall
be deemed amended to extend over the maximum period of time, range of activities and/or geographic
area to which it may be enforceable.

     6. Severability. The invalidity or unenforceability of any provision of this
Agreement shall not affect the validity or enforceability of any other provision of this Agreement.

     7. Waiver of Rights. No delay or omission by NeuStar in exercising any right under
this Agreement will operate as a waiver of that or any other right. A waiver or consent given by
NeuStar on any one occasion is effective only in that instance and will not be construed as a bar
to, or waiver of, any right on any other occasion.

     8. Equitable Remedies. The restrictions contained in this Agreement are necessary for
the protection of the business and goodwill of NeuStar and are considered by Foster to be

2

 

Pursuant to 17 CFR 240.24b-2, confidential information has
been omitted in places marked “[* * *]” and has been filed separately with the Securities and
Exchange Commission pursuant to a Confidential Treatment Application filed with the Commission.

reasonable for such purpose. Foster agrees that any breach or threatened breach of this
Agreement is likely to cause NeuStar substantial and irreparable damage and therefore, in the event
of any such breach or threatened breach, Foster agrees that NeuStar, in addition to such other
remedies which may be available, shall be entitled to specific performance and other injunctive
relief. In addition, Foster acknowledges that NeuStar may, in its sole discretion, upon or after
termination of Foster’s employment or consultancy with NeuStar, notify any future employer of
Foster or other person or entity with which Foster has dealings of his obligations under this
Agreement.

     9. Stay of Time. In the event that Foster violates Paragraph 1 or 2 of this
Agreement, the running of the time period of such provision so violated shall be automatically
suspended on the date of such violation and shall resume on the date such violation permanently
ceases.

     10. Assignability. NeuStar may assign this Agreement to any of its affiliates.

     11. Amendment. This Agreement may not be amended, modified, altered or supplemented
other than by means of a written instrument duly executed by and delivered on behalf of Foster and
NeuStar.

     12. Governing Law. The parties agree that this Agreement, and all rights and
obligations hereunder, shall be deemed to have been made in the Commonwealth of Virginia, shall
take effect as an instrument under seal within Virginia, and shall be governed by and construed in
accordance with Virginia law, without giving effect to conflict of law principles. Any action,
demand, claim or counterclaim relating to the terms and provisions of this Agreement, or to its
formation or breach, shall be commenced in Virginia in state or federal court, and venue for such
actions shall lie exclusively in Virginia. Foster and NeuStar consent to the jurisdiction of such
a court.

     13. Signature in Counterparts. This Agreement may be signed in counterparts.

     14. FOSTER ACKNOWLEDGES THAT HE HAS CAREFULLY READ THIS AGREEMENT AND UNDERSTANDS AND AGREES
TO ALL OF THE PROVISIONS IN THIS AGREEMENT.

     IN WITNESS WHEREOF, the Parties to this Agreement Respecting Noncompetition and
Nonsolicitation have executed this instrument on the date(s) set forth below.

	 	 	 	 	 	 	 	 	 	 	 
	 	 	MARK FOSTER	 	 	 	 	 	 
	 
	 	 	 	 	 	 	 	 	 	 
	 	 	/s/ Mark Foster	 	 	 	Date: May 6, 2008	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 	 	 	 	 	 	 	 	 
	 	 	NEUSTAR, INC.	 	 	 	 	 	 
	 
	 	 	 	 	 	 	 	 	 	 
	 

	 	By:
	 	/s/ Jeffrey A. Babka
 

	 	 	 	Date: 5/5/08
	 	 
	 	 	Name: Jeffrey A. Babka	 	 
	 	 	Title: Senior Vice President and Chief Financial Officer	 	 

3exv10w51

Exhibit 10.51

Pursuant to 17 CFR 240.24b-2, confidential information has been omitted in places marked “[* * *]”
and has been filed separately with the Securities and Exchange Commission pursuant to a
Confidential Treatment Application filed with the Commission.

SENIOR ADVISOR SERVICES AGREEMENT

This Senior Advisor Services Agreement (the “Agreement”) is entered into this 5th day of May 2008
(the “Effective Date”) by and between Mark Foster (“Senior Advisor”), having a residence at
[* * *], and NeuStar, Inc. (“NeuStar”), a Delaware company having a place of business at 46000
Center Oak Plaza, Sterling, VA 20166 (each a “Party” and collectively the “Parties”).

1. SCOPE OF SERVICES

Acting as an independent senior advisor, and not as an employee of NeuStar, Senior Advisor shall
provide NeuStar the consulting services (the “Services”) set forth in one or more consecutively
numbered statements of work, the first of which is attached hereto as Attachment A, each of
which shall be subject to the terms and conditions of this Agreement and shall be deemed
incorporated herein by reference upon mutual execution and delivery by the Parties (each, a “SOW”).
Senior Advisor shall use best efforts in performing the Services in a professional and timely
manner, using the highest degree of skill, diligence and expertise.

2. COMPENSATION

NeuStar shall make payment to Senior Advisor for Services performed as set forth hereunder at the
rate set forth in the applicable SOW. In addition, when requested and authorized by NeuStar in
writing in advance, NeuStar shall reimburse Senior Advisor for reasonable travel expenses and other
reasonable costs incurred in providing his Services hereunder. NeuStar shall make such payment in
arrears within thirty (30) days of NeuStar’s receipt of Senior Advisor’s monthly invoice, which
shall include an itemized account of Services and reimbursable expenses, together with all original
receipts relating to the approved reimbursable expenses, if any, and a valid purchase order number
from NeuStar relating to the Services described on the invoice; provided that NeuStar shall not be
obligated to remit payment (a) if the invoice is not complete, or (b) for any portion of the
invoice which NeuStar disputes in good faith.

All invoices from the Senior Advisor shall be addressed as set forth below in this section:

NeuStar, Inc.

4600 Center Oak Plaza

Sterling, VA 20166

Attn: Accounts Payable

3. ADHERENCE TO SAFETY AND SECURITY REQUIREMENTS

Senior Advisor shall be responsible for observing NeuStar rules, regulations and policies
concerning NeuStar’s place of business (the “Premises”), including but not limited to safety
regulations and security requirements. Senior Advisor shall also work in harmony with NeuStar
employees, agents, contractors and other advisors. In the event that NeuStar determines that
Senior Advisor is failing to observe such rules or work in such manner, NeuStar may request that
Senior Advisor leave the Premises. Upon receipt of such request, Senior Advisor shall leave the
Premises promptly.

4. CONFIDENTIAL INFORMATION

     (a) In performing the Services, Senior Advisor may receive from NeuStar, or Senior Advisor
may observe, certain confidential and proprietary information. “Confidential Information”
means all information, whether of a technical, business or any other nature, disclosed in any
manner, whether verbally, electronically, visually or in a written or other tangible form, which is
either identified as

1

 

Pursuant to 17 CFR 240.24b-2, confidential information has been omitted in places marked “[* * *]”
and has been filed separately with the Securities and Exchange Commission pursuant to a
Confidential Treatment Application filed with the Commission.

confidential or proprietary or which should be reasonably understood to be
confidential or proprietary in nature with respect to NeuStar, its affiliates or third parties.
Confidential Information shall also include (i) the terms and conditions of this Agreement
(including without limitation the nature and/or substance of the Services), and (ii) all
information or work product (including any deliverables) of any kind obtained or developed by
Senior Advisor as a result of the Services performed hereunder.

     (b) Confidential Information does not include any information that (i) is now or subsequently
becomes publicly available without breach of this Agreement, (ii) can be demonstrated to have been
lawfully known to Senior Advisor at the time of its receipt from NeuStar, (iii) is rightfully
received by Senior Advisor from a third-party who, to Senior Advisor’s knowledge, did not acquire
or disclose such information by a wrongful or tortious act, or (iv) can be shown by documentation
to have been independently developed by Senior Advisor without reference to any Confidential
Information.

     (c) Except as set forth in paragraph 4(e) below, Senior Advisor shall (i) keep NeuStar’s
Confidential Information in strict confidence, and (ii) not disclose any of NeuStar’s Confidential
Information to anyone without NeuStar’s prior written consent. Senior Advisor shall not use, or
permit others to use, Confidential Information for any purpose other than for performing the
Services.

     (d) Senior Advisor shall take all reasonable measures to avoid disclosure, dissemination or
unauthorized use of NeuStar’s Confidential Information, including, at a minimum, those measures
Senior Advisor takes to protect his own Confidential Information of a similar nature, which shall
not be less than the care a reasonable person would use under similar circumstances.

     (e) If required to disclose NeuStar’s Confidential Information pursuant to applicable federal,
state or local law, regulation, court order, or other legal process, Senior Advisor shall give
NeuStar prior written notice of such required disclosure and, to the extent reasonably possible,
give NeuStar an opportunity to contest such required disclosure at NeuStar’s expense.

     (f) Senior Advisor shall notify NeuStar immediately in the event Senior Advisor learns of any
unauthorized possession, use or knowledge of NeuStar’s Confidential Information or materials
containing such Confidential Information, and will cooperate with NeuStar in any proceeding against
any third parties necessary to protect NeuStar’s rights with respect to the Confidential
Information.

     (g) NeuStar, or the relevant third party, as the case may be, retains all right, title and
interest in and to its Confidential Information, including any intellectual property rights
thereof, and Senior Advisor shall have no rights, by license or otherwise, to use or disclose
Confidential Information except as otherwise expressly provided herein.

     (h) Disclosure or use of NeuStar’s Confidential Information in violation of this Agreement
could cause irreparable harm to NeuStar for which monetary damages may be difficult to ascertain or
are an inadequate remedy. Therefore, NeuStar shall have the right, in addition to its other rights
and remedies, to seek and obtain injunctive relief for any violation of this Agreement.

5. INTELLECTUAL PROPERTY

     (a) All right, title and interest in and to the intellectual property rights in the work
product developed hereunder hereby vests solely and exclusively in NeuStar. To the extent
possible, all work product shall be considered “work done for hire.” In no event shall this
Agreement grant by implication a license to any intellectual property rights, except as otherwise
expressly authorized and agreed. For the purposes of this Agreement, intellectual property rights
shall mean all those rights and interests, whether
by statute or under common law, relating to copyrights, patents, trademarks, trade secrets, or
any similar

2

 

Pursuant to 17 CFR 240.24b-2, confidential information has been omitted in places marked “[* * *]”
and has been filed separately with the Securities and Exchange Commission pursuant to a
Confidential Treatment Application filed with the Commission.

rights. 

     (b) To the extent, if any, that ownership of the work product does not automatically vest in
NeuStar by virtue of this Agreement or otherwise, Senior Advisor hereby transfers and assigns to
NeuStar all rights, title and interest that Senior Advisor may have in and to any work product
developed under this Agreement. Senior Advisor shall assist and cooperate with NeuStar in all
reasonable respects and shall execute documents, give testimony and take further acts as reasonably
requested by NeuStar to acquire, transfer, maintain and enforce any intellectual property rights
and other legal protection for the work product.

6. LIMITATION OF LIABILITY

IN NO EVENT SHALL NEUSTAR BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL, PUNITIVE, EXEMPLARY OR
CONSEQUENTIAL DAMAGES FOR ANY VIOLATIONS OF, OR CAUSES OF ACTION RELATING TO OR ARISING FROM, THIS
AGREEMENT, EVEN IF SENIOR ADVISOR HAS BEEN INFORMED OF THE POSSIBILITY OF SUCH DAMAGES. IN NO
EVENT SHALL THE LIABILITY OF NEUSTAR UNDER THIS AGREEMENT EXCEED THE TOTAL AMOUNT PAID UNDER THIS
AGREEMENT.

7. TERMINATION

     (a) Either Party may terminate this Agreement, or any SOW, at its convenience upon written
notice of thirty (30) calendar days.

     (b) Either Party may terminate this Agreement, or any SOW, for a material breach by the other
Party of the terms and conditions of this Agreement or the relevant SOW, which breach has not been
cured within fourteen (14) calendar days after written notice of such breach to the breaching
Party, or if such breach is not capable of being cured within said cure period, then such
termination shall be effective upon receipt of the notice of termination by the breaching Party.

     (c) NeuStar may terminate this Agreement, or any SOW, upon written notice of ten (10) calendar
days, if NeuStar in good faith determines that any other employment or material consulting
activities undertaken or to be undertaken by Senior Advisor will materially interfere with Senior
Advisor’s ability to timely and adequately perform the Services hereunder (or thereafter they so
interfere) and Senior Advisor performs such activities (or does not cease such activities within 10
days) after being so notified.

     (d) Termination or expiration of this Agreement refers to the termination of all the Parties’
respective commitments and obligations hereunder from and after the date of termination, but does
not relieve the Parties of their obligations incurred prior to the date of termination or
expiration. The termination of this Agreement shall serve to terminate all existing SOWs. Unless
otherwise provided, termination or expiration of a SOW shall not operate to terminate this
Agreement or any other SOW.

     (e) Promptly upon termination or expiration, Senior Advisor shall inform NeuStar of the extent
to which performance has been completed through the date of termination or expiration, wind up his
work in a commercially reasonable manner, preserve items of value created prior to termination, and
deliver to NeuStar all work in progress. Senior Advisor shall not commit to any further
expenditure unless he first obtains NeuStar’s prior written approval.

     (f) Promptly upon termination or expiration, Senior Advisor shall invoice NeuStar all amounts
properly due and owing for the Services and deliverables delivered since the date of last invoice.

3

 

Pursuant to 17 CFR 240.24b-2, confidential information has been omitted in places marked “[* * *]”
and has been filed separately with the Securities and Exchange Commission pursuant to a
Confidential Treatment Application filed with the Commission.

Promptly upon termination or expiration, Senior Advisor shall return or dispose of all of NeuStar’s
Confidential Information in accordance with this Agreement or any applicable SOW.

8. REPRESENTATIONS

Senior Advisor hereby covenants to the following representations:

     (a) Senior Advisor shall act solely as an independent contractor, not as an employee or agent
of NeuStar.

     (b) The solicitation or receipt of any information, classified or unclassified, directly or
indirectly, from the U.S. or any foreign Government or any U. S. state or municipal government in
the course of performing this Agreement will be strictly in accordance with all laws and
regulations pertaining to the protection, possession, acquisition, and use of such information or
documents.

     (c) By executing this Agreement, Senior Advisor certifies that he has not been convicted of or
pleaded guilty to a federal offense involving fraud, corruption, or moral turpitude and is not now
listed by any federal or state agency as debarred, suspended, proposed for suspensions or
debarment, or otherwise ineligible for federal or state procurement programs. Senior Advisor
agrees to give prompt written notice to NeuStar in the event that, at any time during the term of
this Agreement, the above certification is no longer accurate.

     (d) During the term of this Agreement, Senior Advisor will not enter into any activity,
employment, or business arrangement that conflicts with NeuStar interests or Senior Advisor’s
obligations under this Agreement. Senior Advisor shall advise NeuStar of Senior Advisor’s position
with respect to any activity, employment, or business arrangement contemplated by Senior Advisor
that may be relevant to this paragraph. For this purpose, Senior Advisor agrees to disclose any
such plans to NeuStar prior to implementation.

9. TAXES

All amounts to be billed and paid by NeuStar hereunder are gross amounts. Senior Advisor shall be
responsible for satisfying all reporting and payment obligations relating to FICA, federal and
state income tax, unemployment compensation, withholding, and all other similar responsibilities.
Senior Advisor agrees to indemnify and hold NeuStar harmless from any liability as a result of
Senior Advisor’s failure to comply with this section. This section shall survive any termination
or expiration of this Agreement.

10. ASSIGNMENT

Except for assignments by NeuStar to its affiliates, neither Party may assign this Agreement or
delegate any obligations hereunder without the other Party’s prior written consent. Any attempted
assignment or delegation in violation of this Agreement shall be void.

11. RELATIONSHIP

     (a) The Parties are separate and independent legal entities, and independent contractors as to
each other. Nothing contained in this Agreement shall be deemed to constitute either Party an
agent, representative, partner, joint venturer or employee of the other for any purpose. Neither
Party has the authority to bind the other or to incur any liability on behalf of the other, nor to
direct the employees of the other.

4

 

Pursuant to 17 CFR 240.24b-2, confidential information has been omitted in places marked “[* * *]”
and has been filed separately with the Securities and Exchange Commission pursuant to a
Confidential Treatment Application filed with the Commission.

     (b) Senior Advisor shall be solely responsible for all matters relating to employment
including, without limitation, compliance with all applicable worker’s compensation, unemployment
compensation, medical, dental and disability insurance, and social security laws and all
withholding and all other federal, state, and local laws governing such matters. Except as
expressly provided in the Letter Agreement, dated May 5, 2008, by and between Senior Advisor and
NeuStar, Senior Advisor is not entitled to any
medical coverage, life insurance, participation in any NeuStar savings plan, stock incentive
plan or severance plan, or other benefits afforded to employees of NeuStar or NeuStar-affiliated
companies.

12. NO THIRD-PARTY BENEFICIARIES

This Agreement shall not be deemed to create any rights in third parties, including end users,
suppliers, licensors, licensees and customers of a Party, or to create any obligations of a Party
to any such third parties, or to give any right to either Party to enforce this Agreement on behalf
of a third party.

13. WAIVER & SEVERABILITY

Failure by either Party to enforce any term or condition of this Agreement will not be deemed a
waiver of future enforcement of that or any other term or condition. If any term of this Agreement
is held invalid or unenforceable for any reason, then the remainder of the provisions will continue
in effect as if this Agreement had been executed with the invalid portion eliminated.

14. SURVIVAL

In addition to any provisions specifically identified as such hereunder, any provision that
contemplates performance or observance subsequent to any termination or expiration of this
Agreement (in whole or in part) shall survive any termination or expiration of the Agreement (in
whole or in part, as applicable) and continue in full force and effect.

15. GOVERNING LAW

This Agreement shall be governed by and construed in accordance with the laws of the Commonwealth
of Virginia, without regard to its principles of conflicts of laws.

16. CUMULATIVE REMEDIES

Except as otherwise expressly provided, all remedies provided for herein shall be cumulative and in
addition to and not in lieu of any other remedies available to either Party at law, in equity or
otherwise.

17. NOTICE

Any and all notices, communications and demands required or desired to be given hereunder by either
Party shall be in writing and shall be validly given or made if served personally or by overnight
delivery service or if deposited in the U.S. mail, certified or registered, postage prepaid, return
receipt requested. If such notice or demand is served personally, service shall be conclusively
deemed made on the same day (or if such day is not a business day, then the next business day); if
by an overnight delivery service, on the next business day; and if by registered or certified mail,
on the third business day after the day on which such notice was deposited in the U.S. mail. To be
effective, any service hereunder shall be addressed as set forth below:

	 	 	 	 	 	 	 	 	 
	 

	 	If to NeuStar:
	 	 	 	If to Senior Advisor:	 	 
	 

	 	 

NeuStar, Inc.
	 	 	 	 

Mark Foster
	 	 

5

 

Pursuant to 17 CFR 240.24b-2, confidential information has been omitted in places marked “[* * *]”
and has been filed separately with the Securities and Exchange Commission pursuant to a
Confidential Treatment Application filed with the Commission.

	 	 	 	 	 	 	 	 	 
	 

	 	46000 Center Oak Plaza
	 	 	 	[* * *]	 	 
	 

	 	Sterling, VA 20166	 	 	 	 	 	 
	 

	 	Attn: General Counsel	 	 	 	 	 	 

A Party may from time to time change its address or designee for notice purposes by giving the
other prior written notice of the new address or designee and the date upon which it will become
effective.

18. AMENDMENT; CONFLICT

This Agreement shall not be modified except by a written amendment signed by the Parties. In the
event of a conflict between this Agreement and a particular SOW, this Agreement shall govern.

In witness whereof, the Parties have executed this Agreement on the date(s) written below.

	 	 	 	 	 	 	 	 	 	 	 
	 	 	MARK FOSTER	 	 	 	 	 	 
	 
	 	 	 	 	 	 	 	 	 	 
	 	 	/s/ Mark Foster	 	 	Date: 	May 6, 2008	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 	 	 	 	 	 	 	 	 
	 	 	NEUSTAR, INC.	 	 	 	 	 	 
	 
	 	 	 	 	 	 	 	 	 	 
	 
	 	By:	 	/s/ Jeffrey A. Babka	 	 	Date: 	5/5/08	 	 
	 	 	 	 	 	 	 	 	 	 	 
	 	 	Name: Jeffrey A. Babka	 	 
	 	 	Title: Senior Vice President and Chief Financial Officer	 	 

6

 

Pursuant to 17 CFR 240.24b-2, confidential information has been omitted in places marked “[* * *]”
and has been filed separately with the Securities and Exchange Commission pursuant to a
Confidential Treatment Application filed with the Commission.

Attachment A

TO SENIOR ADVISOR SERVICES AGREEMENT

Scope of Work for SOW #1

Senior Advisor: Mark Foster

This Statement of Work (“SOW”) is entered into by and between NeuStar, Inc. (“NeuStar”) and Mark
Foster (“Senior Advisor”) pursuant to the terms and conditions of the Senior Advisor Services
Agreement (“Agreement”), dated May 5, 2008, by and between NeuStar and Senior Advisor. Terms used
in this SOW that are not defined below or in the Agreement are defined in the context in which they
are used and have the meanings there stated.

Estimated Length of Project:

	 	 	 	 	 
	 

	 	Begin:
	 	May 7, 2008
	 

	 	End:
	 	N/A

Work Hours:

Minimum of 180 hours per calendar quarter

[* * *]

Rate of Pay:

$300 per hour plus reasonable expenses
[* * *]

All invoices from Senior Advisor shall be addressed as set forth below:

NeuStar, Inc.

46000 Center Oak Plaza

Sterling, VA 20166

Attn: Accounts Payable

Address of Senior Advisor:

Mark Foster

[* * *]

Description of Services:

Senior Advisor will [* * *]

Senior Advisor may [* * *]

Senior Advisor shall [* * *]

NeuStar Point of Contact (Hiring Manager):

Jeffrey E. Ganek, Chairman and Chief Executive Officer

NeuStar Division/Dep. Code:

7

 

Pursuant to 17 CFR 240.24b-2, confidential information has been omitted in places marked
“[* * *]” and has been filed separately with the Securities and Exchange Commission pursuant
to a Confidential Treatment Application filed with the Commission.

Purchase Order # (Required for Payment):

	 	 	 	 	 
	 

	 	 

	 	 

	 	 	 	 	 	 	 	 	 	 	 
	AGREED TO AND ACCEPTED:	 	 	 	 	 	 
	 
	 	 	 	 	 	 	 	 	 	 
	 	 	MARK FOSTER	 	 	 	 	 	 
	 
	 	 	 	 	 	 	 	 	 	 
	 	 	/s/ Mark Foster	 	Date:	 	May 6, 2008	 	 
	 	 	 	 	 	 	 	 	 
	 
	 	 	 	 	 	 	 	 	 	 
	 	 	NEUSTAR, INC.	 	 	 	 	 	 
	 
	 	 	 	 	 	 	 	 	 	 
	 

	 	By:
	 	/s/ Jeffrey A. Babka
 

	 	Date:
	 	5/5/08
 

	 	 
	 

	 	Name:
	 	Jeffrey A. Babka	 	 	 	 	 	 
	 	 	Title:	 	Senior Vice President and Chief Financial Officer	 	 

8

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00146-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00146-of-00352.parquet"}]]