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  2. List of Alabama area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Alabama_area_codes

    The U.S. state of Alabama is served by six area codes. When the North American Numbering Plan was first defined in 1947, Alabama was a single numbering plan area (NPA), with area code 205. This configuration existed until 1995 when area code 334 was added for the southeastern part of the state. In 1998, area code 256 was assigned for northern ...

  3. Area codes 205 and 659 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_205_and_659

    Map of number plan area 205/659 (red) in Alabama. Area codes 205 and 659 are telephone area codes in the North American Numbering Plan (NANP) for the western and central parts of the U.S. state of Alabama, including the cities of Birmingham and Tuscaloosa.

  4. Telephone exchange names - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange_names

    Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]

  5. List of North American Numbering Plan area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_North_American...

    Alabama (Birmingham, Tuscaloosa, and parts of western and central Alabama) 1947: created for all of Alabama; 1995: split to create 334; 1998: split to create 256; 2019: overlaid by 659; 206: Washington (Seattle area) 1947: created for all of Washington; 1957: split to create 509; 1995: split to create 360; 1997: split to create 425 and 253; 207

  6. Area codes 678, 470, and 943 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_678,_470,_and_943

    All central office prefixes of area code 404 are assigned to service providers, the last having been issued in October 2013. [5] Prefixes in 678 and 770 have also all been allocated, leaving only 470 central office codes available, although previously-used numbers are always available for reassignment to new customers.

  7. Telephone prefix - Wikipedia

    en.wikipedia.org/wiki/Telephone_prefix

    A telephone prefix is the first set of digits after the country, and area codes of a telephone number. In the North American Numbering Plan countries (country code 1), it is the first three digits of a seven-digit local phone number, the second three digits of the 3-3-4 scheme. In other countries, both the prefix and the number may have ...

  8. List of country calling codes - Wikipedia

    en.wikipedia.org/wiki/List_of_country_calling_codes

    41 (91) – Campione d'Italia, an Italian enclave. 91 is the prefix for the Swiss canton Ticino in which the enclave resides. Its phone system is fully integrated into the Swiss system. 42 – formerly assigned to Czechoslovakia, later to its breakup successors (CZ, SK) until 1997; 420 – Czech Republic; 421 – Slovakia; 422 – unassigned

  9. List of mobile telephone prefixes by country - Wikipedia

    en.wikipedia.org/wiki/List_of_mobile_telephone...

    Users can now switch carriers and keep their cell phone numbers, including prefix 89: Telenor (Bulgaria) Users can now switch carriers and keep their cell phone numbers, including prefix 988: Other mobile networks: Users can now switch carriers and keep their cell phone numbers, including prefix Burkina Faso +226: 70: 8: Telmob: 71: 72: 74 ...