Enabling Connections

NANPA & PA: Trusted Steward of A Critical Resource Enabling Connections

A Vital Resource

A Brief History of Phone Numbers

Telephone Numbers…Your dentist has one, your local grocery store has one, your smart phone has one, even your smart watch has one. But have you ever wondered where all of these phone numbers come from? The answer, the North American Numbering Plan.

The North American Numbering Plan, commonly known as the NANP, was created in the 1940s to provide an integrated telephone numbering plan for North America. Twenty countries in North America now participate in the NANP and share numbering resources. To ensure numbers are available to meet future demands, an Administrator for the NANP manages this critical resource. The Administrator manages and preserves the NANP resources, oversees the impartial distribution of telephone numbers to telecommunications service providers and optimizes the assignment of numbers.

Preserving NANP

Proudly Serving 20 Member Countries

Selected by the Federal Communications Commission (FCC) in October of 2018 through a competitive bidding process, Somos proudly serves the twenty member countries of the NANP as NANP Administrator (NANPA).

For the U.S., Somos also serves in related roles as the National Thousands-block Pooling Administrator (PA) and the Routing Number Administrator (RNA). These services, impartially managed in accordance with regulatory directives and Industry guidelines, are critical to preserve and extend the overall life of the NANP—a vital resource for consumers and businesses to connect.

For more information on these services, please visit the following sites:

National NANPA
National Pooling
National PANI

Stay Connected

Stay in touch! Sign up for our monthly newsletter. We will never share your information with third parties.

Need to reach us sooner? Call or text us at:

844.HEY.SOMOS help@somos.com