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

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

    California (Daly City, South San Francisco, Palo Alto, Redwood City, Menlo Park, Mountain View, San Mateo, Santa Clara) August 2, 1997: split of 415; 651: Minnesota (St. Paul, Eagan, Lindstrom, Red Wing, Hastings, Stillwater, and a part of east-central Minnesota) July 12, 1998: split of 612; 652–654: not in use; available for geographic ...

  3. List of area code overlays - Wikipedia

    en.wikipedia.org/wiki/List_of_area_code_overlays

    San Francisco East Bay: 343: 613: Ottawa and eastern Ontario: 347, 929: 718: New York City boroughs of The Bronx, Brooklyn, Queens, and Staten Island, as well as Marble Hill, a Manhattan neighborhood directly connected to The Bronx [2] 351: 978: North-central and most of northeastern Massachusetts: 364: 270

  4. Telephone exchange names - Wikipedia

    en.wikipedia.org/wiki/Telephone_exchange_names

    Several representations of telephone numbers using central office names capitalized and emboldened the leading letters that were dialed, for example: Kenmore 9392 is a five-pull (1L-4N) small-city telephone number for the Kenmore exchange in Fort Wayne, Indiana. MArket 7032 is a six-digit (2L-4N) telephone number. This format was in use from ...

  5. List of California area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_California_area_codes

    In 1947, the American Telephone and Telegraph Company (AT&T) devised the first nationwide telephone numbering plan and assigned the original North American area codes. The state of California was divided into three numbering plan areas (NPAs) with distinct area codes : 213 , 415 , and 916 , for the southern, central, and northern parts of the ...

  6. Area code 901 - Wikipedia

    en.wikipedia.org/wiki/Area_code_901

    Area code 901 (dark blue) post 2001. Area code 901 is a telephone area code in the North American Numbering Plan (NANP) for Memphis, Tennessee, and most of its inner-ring suburbs. It is the smallest numbering plan area in the state.

  7. Original North American area codes - Wikipedia

    en.wikipedia.org/wiki/Original_North_American...

    Telephone dial number card of c.1948 with the local telephone number 4-5876 in Atlantic City, NJ, using the central office prefix 4, later converted to AT4 Face of a 1939 rotary telephone dial with the telephone number LA-2697, which includes the first two letters of Lakewood, New Jersey, as the central office prefix, later converted to LA6.

  8. List of telephone country codes - Wikipedia

    en.wikipedia.org/wiki/List_of_telephone_country...

    Worldwide distribution of country calling codes. Regions are coloured by first digit. Telephone country codes, but also sometimes referred to as country dial-in codes, or historically international subscriber dialing (ISD) codes in the U.K., are telephone number dialing prefixes for reaching subscribers in foreign countries or areas via international telecommunication networks.

  9. List of mobile telephone prefixes by country - Wikipedia

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

    Users can switch carriers while keeping number and prefix (so prefixes are not tightly coupled to a specific carrier). 7 Claro 8: Instituto Costarricense de Electricidad (Kölbi) Croatia +385: 91: 9: A1 Hrvatska: Due to Mobile number portability the prefix of an existing number does not determine the carrier. Any new number will follow the ...