THE CORPORATE LIBRARY

Related Party Transactions and Outside Related Director Information

NeuStar, Inc. (NSR)

4/24/2006 Proxy Information

Mr. Landy was designated as a director by the Warburg Pincus Entities, which own 10.35% of NSR shares.

Voting Trust

As of April 1, 2006, a total of 1,884,232 shares of our Class A common stock owned by the Warburg Pincus Entities and certain members and former members of our management were held in a voting trust, the terms and conditions of which are set forth in a voting trust agreement, dated September 24, 2004, by and among us, the Warburg Pincus Entities, members and former members of our management, certain other current and former institutional investors, and the trustees. Under this agreement, the trustees have the power to vote the shares held in trust and to execute stockholder consents in any and all proceedings where the vote or consent of our stockholders may be required or authorized, including the election of directors, except that the investors may direct the manner in which the shares held in trust are to be voted in connection with the following matters:

• any merger, consolidation or other reorganization of us with or into another corporation;

• the issuance of our capital stock or rights to acquire our capital stock;

• any acquisition by us of another corporation;

• any sale, lease, transfer or other disposition of all or substantially all of our assets;

• our liquidation or the adoption by us of a plan to liquidate; and

• the incurrence or guarantee by us of indebtedness for borrowed money in excess of $10,000,000.

The Warburg Pincus Entities may sell the shares owned by them that are held in trust at any time subject to the restrictions on ownership and transfer set forth in our certificate of incorporation. Members and former members of our management may only sell their shares out of the voting trust if there is a sale or distribution of the remaining shares held in trust by the Warburg Pincus Entities, in which case members and former members of our management may sell a number of shares in proportion to the cumulative amount sold or distributed by the institutional investors as a whole.

Stockholders Agreement

Pursuant to a stockholders agreement among us, the Warburg Pincus Entities, MidOcean Capital Investors, L.P., ABS Capital Partners IV, L.P., ABS Capital Partners IV Offshore, L.P., ABS Capital Partners IV-A, L.P., ABS Capital Partners IV Special Offshore, L.P., collectively referred to herein as the ABS Capital Partners Entities, and the trustees of the voting trust, we have agreed that, subject to applicable law, compliance with our neutrality requirements, and the rules and regulations of the Securities and Exchange Commission and the New York Stock Exchange, we would nominate and use our reasonable best efforts to cause to be elected and cause to remain as directors on our Board one individual who was designated by the Warburg Pincus Entities, but only so long as the Warburg Pincus Entities beneficially own at least 5% of our outstanding Class A Common Stock. Under the stockholders agreement, the Warburg Pincus Entities, MidOcean Capital Investors, L.P. and the ABS Capital Partners Entities had additional designation and Board observer rights during 2005; however, such rights were subject to minimum percentage ownership requirements and, as of April 1, 2006, those percentage ownership requirements were no longer met. As a result, these additional designation and Board observer rights have expired.

Registration Rights

We are party to a registration rights agreement with the Warburg Pincus Entities, MidOcean Capital Investors, L.P. and the ABS Capital Partners Entities. As of April 1, 2006, according to our books and records, these stockholders held an aggregate of 8,693,912 shares of our Class A common stock, with respect to which we have registration obligations under the registration rights agreement except to the extent that these shares cease to be registrable securities, as described below.

The Warburg Pincus Entities and MidOcean Capital Investors, L.P. have the right to require, subject to certain conditions, that we register the resale of shares of our Class A common stock held by them, which demand may be for shelf registration. The Warburg Pincus Entities collectively are entitled to make three such demands, two of which were used during 2005, and of which the remaining one may be a demand for shelf registration. MidOcean Capital Investors, L.P. is entitled to make two such demands, one of which was used during 2005, and of which one may be a demand for shelf registration. These stockholders also have piggyback rights, subject to certain conditions and exceptions, to include the resale of their shares on any registration statement we file with respect to an offering of securities, whether for our account or the account of any other person.

We have agreed to pay the registration expenses of the stockholders selling their shares of our Class A common stock pursuant to the registration rights agreement, including, but not limited to, the payment of federal securities law and state blue sky registration fees and the reasonable fees and expenses of legal counsel to the holders of shares subject to the registration rights agreement, except that we will not bear any underwriters’ discounts and commissions or similar fees. We have agreed to indemnify selling stockholders for certain violations of federal or state securities laws in connection with any registration statement in which such selling stockholders sell shares of our Class A common stock pursuant to the registration rights agreement. Each such selling stockholder in turn has agreed to indemnify us for federal or state securities law violations that occur in reliance upon written information provided by it for use in the registration statement.

As to each party to the registration rights agreement, the shares held by such party have registration rights under the registration rights agreement until all such shares have been sold under an effective registration statement, have been transferred or are freely transferable under the Securities Act or have ceased to be outstanding.

Warrants

Four warrants to acquire a total of 6,361,383 shares of our Class A common stock were exercised by the Warburg Pincus Entities on December 12, 2005, for an exercise price of $0.0667 per share, or a total of approximately $424,304, in cash.

Other Transactions

Pursuant to a joint venture formation agreement dated April 27, 2001 by and between us and Melbourne IT Limited, during the 2003, 2004 and 2005 fiscal years, we held a 90% interest in NeuLevel, Inc. and Melbourne IT Limited owned the remaining 10% interest. In March 2006, we acquired the shares of NeuLevel held by Melbourne IT Limited, and NeuLevel became a wholly owned subsidiary of ours. We have an agreement with Melbourne IT Limited pursuant to which Melbourne IT Limited serves as a registrar for domain names within the .biz top-level domain. During the years ended December 31, 2003, 2004 and 2005 we recorded approximately $377,000, $512,000, and $684,000, respectively, in revenue from Melbourne IT Limited related to domain name registration services and other nonrecurring revenues from IP claim notification services and pre-registration services.

During the years ended December 31, 2003, 2004 and 2005, we received professional services from a company owned by the brother of Jeffrey Ganek, our Chairman and CEO. These services were related to tenant improvements in the Company’s leased office spaces. The amounts paid to the related party during the years ended December 31, 2003, 2004 and 2005 were approximately $38,000, $117,000 and $99,000, respectively.

In January 2003, we acquired BizTelOne, Inc., a provider of clearinghouse-based operating support services, for $2.5 million in cash, plus a $700,000 earn-out amount accrued in 2004. The earn-out was paid in March 2005 to BizTelOne’s prior stockholders, including John Malone, our Senior Vice President, Sales and Business Development.

Pursuant to the registration rights agreement described above, we paid approximately $292,000 in legal fees and expenses to Willkie Farr & Gallagher LLP for services rendered to the Warburg Pincus Entities in connection with our two public offerings in 2005.