If you have any questions, concerns, or wish to issue a complaint you can contact NPAC staff by using the following methods:

Phone: (571) 434-5434

E-mail: NPACSM@neustar.biz

Feedback Form : Please go to the top of the page and select Feedback

The Neutrality Officer will answer any complaint in writing by providing a response within 30 calendar days from the time-stamped receipt of the complaint.

For more information on what the response will contain, refer to Section 300 of the Neustar Inc, Neutrality Requirements.

Complaints must be submitted in writing and either hand delivered during normal business hours or mailed, by first-class mail, postage prepaid, to: Neutrality Officer Neustar, Inc. 46000 Center Oak Plaza Sterling, VA 20167.