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  2. Area codes 314 and 557 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_314_and_557

    Area codes 314 and 557 are telephone area codes in the North American Numbering Plan (NANP) in the U.S. state of Missouri, serving the city of St. Louis and most of its inner-ring suburbs in neighboring St. Louis County. The numbering plan area is bordered to the west by area code 636, which serves St. Louis' outer suburbs to the west, south ...

  3. List of Missouri area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Missouri_area_codes

    The area codes are allocated within the North American Numbering Plan (NANP). The two original area codes for Missouri in 1947 were 314 and 816. Area code 417 was split off from 816 in 1950, and the other area codes followed more than 40 years later, due to the proliferation of Cellular Phones and Pagers.

  4. Area code 636 - Wikipedia

    en.wikipedia.org/wiki/Area_code_636

    By 1995, the telephone subscriber base experience substantial growth, threatening the exhaustion of the numbering pool. [1] Relief planning entailed the division of the numbering plan area to create a new area code, 573, for most areas outside of the St. Louis metropolitan area, which would retained area code 314.

  5. 30 Scam Phone Numbers To Block and Area Codes To Avoid - AOL

    www.aol.com/finance/19-dangerous-scam-phone...

    Quick Take: List of Scam Area Codes. More than 300 area codes exist in the United States alone which is a target-rich environment for phone scammers.

  6. 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]

  7. Area codes 618 and 730 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_618_and_730

    The numbering plan areas and area codes of Illinois. Area codes 618 and 730 are telephone area codes in the North American Numbering Plan (NANP) for southern Illinois.The numbering plan area (NPA) comprises one hundred and twenty-six municipalities, such as Carbondale, Cairo, Belleville, East St. Louis, Edwardsville, Marion, O'Fallon, Alton, Mt. Vernon, Centralia, Herrin, Salem, Metropolis ...

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