U.S. Number Portability

The NPAC: The definitive source for facilitating number porting 

The U.S. Number Portability Administration Center (NPAC) supports the implementation of Local Number Portability, which enables customers in the United States to keep their telephone number when switching service providers.

Comprised of seven regional systems, the NPAC facilitates number porting across all Service Providers in the United States, including wireline, wireless and Voice over Internet Protocol (VoIP) providers.

Upon logging in to the NPAC Customer Portal, authorized NPAC users can access training materials, user documentation, billing and support information.

Log in to the NPAC Customer Portal


Service Providers and Providers of Telecom-Related Services (PTRS), including Service Bureaus, can become an authorized NPAC user.


Services for U.S. Law Enforcement Agencies (LEAs) and Public Safety Answering Points (PSAP).

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Services for businesses that must comply with the Wireless Do Not Call laws for telephone marketing or research.

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The LNPA Working Group, is the body that makes the decisions and recommendations that form the basis of the regulatory orders.

LNP stands for Local Number Portability. You may also hear it referred to as number portability, wireless number portability or number porting.