THIRD AMENDMENT TO COMMON SHORT CODE LICENSE AGREEMENT

Exhibit 10.7.2

THIRD AMENDMENT TO
COMMON SHORT CODE LICENSE AGREEMENT
Extension of Number Range for 6-Digit CSCs

     This Third Amendment to the Common Short Code License Agreement (“Third Amendment”), dated as of the twenty-first (21 ^st ) day of September, 2006 between NeuStar, Inc., a Delaware corporation, with offices located at 46000 Center Oak Plaza, Building X, Sterling, VA 20166 (“NeuStar”) and CTIA — The Wireless Association® (“CTIA”), a District of Columbia non-profit corporation, located at 1400 16 ^th Street, NW, Suite 600, Washington, DC 20036.

     WHEREAS, NeuStar entered into a Common Short Code License Agreement with the CTIA (“License Agreement”) dated October 17, 2003 to develop and maintain a database of common short codes, to process common short code applications and assign common short codes to applicants and to engage in other Registry Services on behalf of members of the wireless industry;

     WHEREAS, NeuStar and CTIA