Contact Neustar

As the NPAC Administrator, Neustar is responsible for building and maintaining the NPAC website. We have provided this authoritative website with information and resources concerning local number portability in the U.S. and Canada. Our goal is to ensure that all visitors can easily find and access the information needed regarding local number portability.

We welcome your feedback and input on ways we can improve your experience. If you are an Authorized NPAC user and have questions, please use one of the contact methods outlined in the Authorized Users section.

Please use one of the following methods to contact us if you have a general comment or feedback about this website. If you have questions or issues about using the NPAC system or performing LNP processes you should use the section for Authorized Users below.

General Inquiries, Comments or Feedback

Mail Us
Neustar, Inc.
21575 Ridgetop Circle
Sterling, VA 20166

Call Us
Phone: 571-434-5434
Fax: 571-434-5401

Email Us
Email  Neustar with general questions or requests about the website.

Feedback
Provide feedback  about your experience using NPAC.com.

Authorized Users

Please use one of the following methods to contact the Help Desk for issues or concerns regarding using the NPAC/SMS or performing LNP processes. This will ensure that your question or concern is directed to the department where someone will be able to assist you.

Help Desk : Contact the Help Desk for issues or questions about accessing or using the NPAC.

Billing Operations : Contact the Billing Operations Help Desk for billing questions.

Visit the Neustar website to learn more about Neustar.