Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  FOSTER MARK D
 2. Date of Event Requiring Statement (Month/Day/Year)
06/28/2005		 3. Issuer Name and Ticker or Trading Symbol
NEUSTAR INC [NSR]
(Last)
(First)
(Middle)
46000 CENTER OAK PLAZA		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Sr VP, Chief Tech Officer
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

STERLING, VA 20166		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Class A Common Stock 33,607
D
 
Class A Common Stock 410,900
I
By NeuStar, Inc. Voting Trust
Class A Common Stock 99,999
I
By family trust
Class A Common Stock 199,999
I
By GRAT

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option   (1) 04/10/2010 Class A Common Stock 909,951 $ 0.067 D  
Employee Stock Option   (1) 06/06/2012 Class A Common Stock 47,599 $ 4.286 D  
Employee Stock Option   (2) 12/18/2013 Class A Common Stock 69,999 $ 6.429 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
FOSTER MARK D
46000 CENTER OAK PLAZA
STERLING, VA 20166		       Sr VP, Chief Tech Officer  

Signatures

/s/ Martin Lowen, by power of attorney 06/28/2005
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Immediately
(2) Forty percent of the options are exercisable on the two-year anniversary with the remaining options vesting in thirty-six monthly installments beginning thereafter.

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