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The North American Numbering Plan (NANP) is a telephone numbering plan for twenty-five regions in twenty countries, primarily in North America and the Caribbean. This group is historically known as World Zone 1 and has the telephone country code 1 .
This site provides information about the North American Numbering Plan (NANP) and its administration. The NANP is the numbering plan for the Public Switched Telephone Network for Canada, the US and its territories, and some Caribbean countries.
28 de dez. de 2020 · The North American Numbering Plan — also known as the NANP — is a telephone numbering plan that serves 20 North American countries (listed below). The NANP region mainly covers the US and its territories, Canada, and some Caribbean countries. The participating countries share numbering resources among themselves.
3 de dez. de 2012 · The North American Numbering Plan (NANP) is the basic numbering scheme permitting interoperable telecommunications services within the U.S., Canada, Bermuda, and most of the Caribbean.Section 251 (e) (1) of the Act required the Commission to create or designate one or more impartial entities to administer telecommunications numbering and to make...
In the United States, the industry decided in 1947 to unite all local telephone networks under one common numbering plan with a fixed length of ten digits for the national telephone number of each telephone, of which the last seven digits were known as the local directory number, or subscriber number.
About the North American Numbering Plan. The North American Numbering Plan (NANP) is an integrated telephone numbering plan serving 20 North American countries that share its resources.
The North American Numbering Plan (NANP) was developed by AT&T in 1947 to simplify and facilitate direct dialing of long-distance calls. NANP telephone numbers are ten-digit numbers consisting of a three-digit Numbering Plan Area (NPA) code, commonly called an area code, followed by a seven-digit local number consisting of a three-digit central ...
