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North American Numbering Plan, NANP) — совместный телефонный план нумерации 24 стран и территорий: США (включая островные территории), Канады, Бермуд и 16 карибских государств.
Regulatory authorities in each participating country have plenary authority over numbering resources, but the participating countries share numbering resources cooperatively. AT&T developed the North American Numbering Plan in 1947 to simplify and facilitate direct dialing of long distance calls. Implementation of the plan began in 1951.
The NANP is an integrated numbering plan serving 20 North American countries that share its resources. Regulatory authorities in each participating country have plenary authority over numbering resources, but all participating countries, implicitly or explicitly, share numbering resources cooperatively. This approach has been successful for ...
The North American Numbering Plan (NANP) divides the territories of its members into geographic numbering plan areas (NPAs). Each NPA is identified by one or more numbering plan area codes (NPA codes, or area codes), consisting of three digits that are prefixed to each local telephone number having seven digits. Numbering plan areas may be assigned multiple area codes to provide adequate ...
11 de nov. de 2023 · Language links are at the top of the page across from the title.
The average number of pulses is 12; there are 28 potential NPAs with fewer than 12 pulses, 28 with more than 12 pulses, and 8 with exactly 12 pulses. These 8 are apparently "reserved", as none of them were included in the 1947 NPA assignments. Of the 28 potential NPAs with fewer than 12 pulses, all 28 were assigned.
The North American Numbering Council is an advisory committee of the Federal Communications Commission (FCC) of the United States, chartered in 1995. [1] Its function is to develop and recommend efficient and fair administrative procedures in the administration of the North American Numbering Plan (NANP), including telephone numbering plan ...
