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NANP 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. The format is usually represented as. NXX-NXX-XXXX. where N is any digit from 2 through 9 and X is any digit from 0 through 9. More information can be found under Numbering Resources.
This is a list of North American telephone area codes in effect for the North American Numbering Plan (NANP). The area to which an area code is officially assigned is known as a Numbering Plan Area (NPA). An area code is part of a telephone number in the United States, Canada, and the Caribbean.
Le plan de numérotage nord-américain ( North American Numbering Plan ou NANP) est un système intégré de numérotation téléphonique commun à 20 pays en Amérique du Nord . AT&T a développé ce plan de numérotation en 1947 pour simplifier et faciliter les communications locales et longue-distance. Sa mise en œuvre a débuté en 1951.
The original configuration of the North American Numbering Plan assigned eighty-six area codes in October 1947, one each to every numbering plan area. The territories of the United States, which included Alaska, and Hawaii, did not receive area codes at first, nor did the territories of Canada or Newfoundland and Labrador, which was a British ...
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. Transition to 10-Digit dialing for 988 More Information NANPA Web Guide NANPA Help Desk.
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 International Telecommunications Union (ITU) assigned country code "1" to the NANP area. The NANP conforms with ITU Recommendation E.164, the international standard for ...
The expansion of the North American Numbering Plan (NANP) is the anticipated requirement for providing more telephone numbers to accommodate future needs beyond the pool of ten-digit telephone numbers. Ten-digit telephone numbers have been in use in the United States and Canada in long-distance telephone service since the 1950s.
