UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No. 5)*

NeuStar, Inc.

(Name of Issuer)

Class A Common Stock, $0.001 par value

(Title of Class of Securities)

64126X 20 1

(CUSIP Number)

December 31, 2017

(Date of Event which Requires filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

[ ]

Rule 13d-1(b)

[ x ]

Rule 13d-1(c)

[ ]

Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No. 64126X 20 1

NAMES OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (entities only)

Prescott General Partners LLC

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a) [ ]

(b) [x]

SEC USE ONLY

CITIZEN OR PLACE OF ORGANIZATION

Delaware

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY EACH

REPORTING

PERSON

WITH

SOLE VOTING POWER

SHARED VOTING POWER

SOLE DISPOSITIVE POWER

SHARED DISPOSITIVE POWER

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0
10	CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES Not Applicable
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0%
12	TYPE OF REPORTING PERSON OO

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CUSIP No. 64126X 20 1

NAMES OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (entities only)

Prescott Investors Profit Sharing Trust

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a) [ ]

(b) [x]

SEC USE ONLY

CITIZEN OR PLACE OF ORGANIZATION

Delaware

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY EACH

REPORTING

PERSON

WITH

SOLE VOTING POWER

SHARED VOTING POWER

SOLE DISPOSITIVE POWER

SHARED DISPOSITIVE POWER

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0
10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES Not Applicable
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 0%
12	TYPE OF REPORTING PERSON EP

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CUSIP No. 64126X 20 1

NAMES OF REPORTING PERSONS

I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (entities only)

Thomas W. Smith

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a) [ ]

(b) [x]

SEC USE ONLY

CITIZEN OR PLACE OF ORGANIZATION

United States

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY EACH

REPORTING

PERSON

WITH

SOLE VOTING POWER

SHARED VOTING POWER

SOLE DISPOSITIVE POWER

SHARED DISPOSITIVE POWER

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 0
10	CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES Not Applicable
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 0%
12	TYPE OF REPORTING PERSON IN

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Explanatory Note:

The following constitutes Amendment No. 5 (the “Amendment”) to the joint filing on Schedule 13G by Thomas W. Smith, Scott J. Vassalluzzo and Steven M. Fischer originally filed with the Securities and Exchange Commission (“SEC”) on April 8, 2011, as amended by Amendment No. 1 filed by Prescott General Partners LLC (“PGP”), Thomas W. Smith and Scott J. Vassalluzzo with the SEC on January 5, 2012, Amendment No. 2 filed by PGP, Thomas W. Smith and Scott J. Vassalluzzo with the SEC on February 14, 2014, Amendment No. 3 filed by PGP, Thomas W. Smith and Scott J. Vassalluzzo with the SEC on February 13, 2015, and Amendment No. 4 filed by PGP, Prescott Investors Profit Sharing Trust (“PIPS”) and Thomas W. Smith with the SEC on February 14, 2017 (as amended, the “Schedule 13G”). This Amendment No. 5 modifies the Schedule 13G to indicate that PGP, PIPS and Thomas W. Smith no longer beneficially own any shares of the issuer’s Class A common stock. Unless otherwise indicated, all capitalized terms used herein shall have the meanings given to them in the Schedule 13G.

ITEM 1.

(a)

Name of Issuer:

NeuStar, Inc.

(b)

Address of Issuer's Principal Executive Offices:

21575 Ridgetop Circle

Sterling, VA 20166

ITEM 2.

(a)

Name of Person Filing:

(i)

PGP

(ii)

PIPS

(iii)

Thomas W. Smith

The joint filing of this statement shall not be deemed to be an admission that the reporting persons (the “Reporting Persons”) comprise a “group” within the meaning of Section 13(d)(3) of the Securities Exchange Act of 1934, as amended. The Reporting Persons each disclaim beneficial ownership of the shares reported in this statement in excess of those shares as to which they have or share voting or investment authority.

(b)

Address of Principal Business Office:

The following is the address of the principal business office of each of the Reporting Persons:

2200 Butts Road, Suite 320

Boca Raton, FL 33431

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(c)

Citizenship:

PGP is a Delaware limited liability company. PIPS is an employee profit-sharing plan organized under the laws of the State of Delaware. Thomas W. Smith is a United States citizen.

(d)

Title of Class of Securities:

Class A Common Stock, $0.001 par value

(e)

CUSIP Number:

64126X 20 1

ITEM 3.

If this Statement is filed pursuant to Rules 13d-1(b) or 13d-2(b) or (c), check whether the person filing is a:

Not applicable.

If this Statement is filed pursuant to Rule 13d-1(c), check this box [x]

ITEM 4.

Ownership

(a)

PGP – 0 shares; PIPS – 0 shares; Thomas W. Smith – 0 shares.

(b)

PGP – 0%; PIPS – 0%; Thomas W. Smith – 0%.

(c)

PGP, as the general partner of three private investment limited partnerships (the “Partnerships”), may be deemed to share the power to vote or to direct the vote and to dispose or to direct the disposition of 0 shares held by the Partnerships.

PIPS has the sole power to vote or direct the vote of and to dispose or direct the disposition of 0 shares.

Mr. Smith has the sole power to vote or to direct the vote of and to dispose or to direct the disposition of 0 shares held by Ridgeview Smith Investments LLC, a limited liability company established by Mr. Smith and of which he is the sole member, as well as 0 shares held by a private charitable foundation established by Mr. Smith and for which Mr. Smith acts as trustee (the “Foundation”).

In his capacity as investment manager for certain managed accounts, Mr. Smith may be deemed to have the shared power to vote or to direct the vote of and to dispose or to direct the disposition of 0 shares.

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ITEM 5.

Ownership of Five Percent or Less of a Class

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than 5 percent of the class of securities, check the following [x].

ITEM 6.

Ownership of More than Five Percent on Behalf of Another Person

Not applicable.

ITEM 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company

Not applicable.

ITEM 8.

Identification and Classification of Members of the Group

Not applicable.

ITEM 9.

Notice of Dissolution of Group

Not applicable.

ITEM 10.

Certification

By signing below, I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

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Signature

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Date: February 14, 2018

	PRESCOTT General partners LLC

	/s/ Thomas W. Smith
	Name: Thomas W. Smith
	Title: Managing Member

	PRESCOTT INVESTORS PROFIT SHARING TRUST

	/s/ Thomas W. Smith
	Name: Thomas W. Smith
	Title: Trustee

	/s/ Thomas W. Smith
	Thomas W. Smith

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JOINT FILING AGREEMENT

The undersigned agree that the foregoing Amendment No. 5 to the statement on Schedule 13G, dated February 14, 2018, is being filed with the Securities and Exchange Commission on behalf of each of the undersigned pursuant to Rule 13d-1(k).

Date: February 14, 2018

	PRESCOTT General partners LLC

	/s/ Thomas W. Smith
	Name: Thomas W. Smith
	Title: Managing Member

	PRESCOTT INVESTORS PROFIT SHARING TRUST

	/s/ Thomas W. Smith
	Name: Thomas W. Smith
	Title: Trustee

	/s/ Thomas W. Smith
	Thomas W. Smith

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NEUSTAR INC SC 13G/A