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  1. 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 ...

  2. Area codes in Mexico by code. Country code: 52. International call prefix: 00. Trunk Prefix: none. The telecommunication services of Mexico are provided by a division of the telephone numbering plan into groups of area codes for the following regions: [1] Codes.

  3. Area codes 510 and 341. Coordinates: 37.7°N 122.1°W. Numbering plan areas in California (blue) and border states. Area code 510 is shown in red. Area codes 510 and 341 are telephone area codes in the North American Numbering Plan (NANP) serving much of the East Bay in the U.S. state of California. They cover parts of Contra Costa County and ...

  4. Area code 520 is assigned for use in Arizona since Mar 19, 1995. This area code originated from the 602 area code previously by means of area code split or overlay. View all phone prefixes used in area code 520 or other area codes in Arizona . Included with the location of each prefix are the phone companies / service providers that operates them.

  5. Vezi și. Listă de prefixe telefonice actuale din Canada și Statele Unite ale Americii; Listă de viitoare prefixe telefonice nord-americane; Legături externe. List of exchanges from AreaCodeDownload.com, 520 Area Code Arhivat în 1 ianuarie 2010, la Wayback Machine.