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 *   MIDOCEAN CAPITAL INVESTORS LP 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) 320 PARK AVENUE, 17TH FLOOR 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) NEW YORK, NY 10022 6. Individual or Joint/Group Filing(Check Applicable Line) ___ Form filed by One Reporting Person _X_ 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 5,429,027 I By NeuStar, Inc. Voting Trust Class A Common Stock 2,827,041 I See Footnote (1) (2)

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
Stock Option	  (3)	02/14/2015	Class A Common Stock	82,723	$ 10.857	I	See footnote (4)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
MIDOCEAN CAPITAL INVESTORS LP 320 PARK AVENUE 17TH FLOOR NEW YORK, NY 10022	Â	  X	Â	Â
MIDOCEAN CAPITAL PARTNERS LP 320 PARK AVENUE 17TH FLOOR NEW YORK, NY 10022	Â	  X	Â	Â
VIRTUE J EDWARD 320 PARK AVENUE 17TH FLOOR NEW YORK, NY 10022	Â	  X	Â	Â
ULTRAMAR CAPITAL LTD C/O MIDOCEAN PARTNERS 320 PARK AVENUE, 17TH FLOOR NEW YORK, NY 10022	Â	  X	Â	Â
EXISTING FUND GP LTD C/O MIDOCEAN PARTNERS 320 PARK AVENUE, 17TH FLOOR NEW YORK, NY 10022	Â	  X	Â	Â
MIDOCEAN PARTNERS, LP 320 PARK AVENUE 17TH FLOOR NEW YORK, NY 10022	Â	  X	Â	Â
MIDOCEAN ASSOCIATES SPC C/O MIDOCEAN PARTNERS 320 PARK AVENUE, 17TH FLOOR NEW YORK, NY 10022	Â	  X	Â	Â

Signatures

/s/ MidOcean Capital Investors, L.P., by MidOcean Capital Partners, L.P., by Existing Fund GP Ltd., its general partner, by J. Edward Virtue, Managing Director		06/28/2005
**Signature of Reporting Person		Date
/s/ MidOcean Capital Partners, L.P. by Existing Fund GP Ltd., its general partner, by J. Edward Virtue, Managing Director		06/28/2005
**Signature of Reporting Person		Date
/s/ J. Edward Virtue		06/28/2005
**Signature of Reporting Person		Date
/s/ Ultramar Capital Ltd., by J. Edward Virtue, Chief Executive Officer		06/28/2005
**Signature of Reporting Person		Date
/s/ Existing Fund GP Ltd., by J. Edward Virtue, Managing Director		06/28/2005
**Signature of Reporting Person		Date
/s/ MidOcean Partners, LP by MidOcean Associates, SPC, its general partner, by J. Edward Virtue, Chief Executive Officer		06/28/2005
**Signature of Reporting Person		Date
/s/ MidOcean Associates, SPC, by J. Edward Virtue, Managing Director		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)	MidOcean Capital Investors, L.P., is the direct owner of the reported securities (the "Shares"). This Form 3 is being filed jointly by Ultramar Capital Ltd., a Cayman Islands exempted company ("Ultramar"), J. Edward Virtue ("Virtue"), MidOcean Associates, SPC, a Cayman Islands exempted company registered as a segregated portfolio company ("Associates"), MidOcean Partners, LP, a Cayman limited partnership ("MidOcean"), Existing Fund GP, Ltd., a Cayman Islands exempted company ("Existing Fund"), MidOcean Capital Partners, L.P., a Delaware limited partnership ("MOCP"), and MidOcean Capital Investors, L.P., a Delaware limited partnership ("MCILP").
(2)	MOCP, Existing Fund, MidOcean and Associates may all be deemed to be beneficial owners of the Shares as a result of their direct or indirect control relationship with MCILP. MOCP is the general partner of MCILP. Existing Fund is the general partner of MOCP. MidOcean is the sole owner of Existing Fund and a limited partner in MOCP, and Associates is the general partner of MidOcean. Ultramar is the sole owner of Associates. J. Edward Virtue may be deemed the beneficial owner of the Shares because he indirectly controls the Shares, but disclaims beneficial ownership except to the extent of his pecuniary interest therein.
(3)	Immediately.
(4)	This option to purchase Class A Common Stock is owned directly by Frank L. Schiff, a managing director of entities that indirectly control the Reporting Person.

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