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

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

    Area codes are also assigned for non-geographic purposes. The rules for numbering NPAs do not permit the digits 0 and 1 in the leading position. [1] Area codes with two identical trailing digits are easily recognizable codes (ERC). NPAs with 9 in the second position are reserved for future format expansion.

  3. Personal communications service (NANP) - Wikipedia

    en.wikipedia.org/wiki/Personal_communications...

    In 1993, the North American Numbering Plan designated area code 500 for personal communication services. An initial service concept was that customers could move a given seven-digit telephone number when relocating between numbering plan areas. The 500-code would thus be a non-geographic area code.

  4. List of Pennsylvania area codes - Wikipedia

    en.wikipedia.org/.../List_of_Pennsylvania_area_codes

    This is a list of telephone area codes of Pennsylvania. In 1947, the American Telephone and Telegraph Company divided Pennsylvania into four numbering plan areas (NPAs) and assigned distinct area codes for each. Since 1995, several relief actions in form of area code splits and overlays have expanded the list of area

  5. Area code 500 - Wikipedia

    en.wikipedia.org/?title=Area_code_500&redirect=no

    Retrieved from "https://en.wikipedia.org/w/index.php?title=Area_code_500&oldid=783710560"

  6. Area codes 530 and 837 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_530_and_837

    This map is clickable; click on any region shown to visit the page for those area codes.Area code 530 is shown in red. Area codes 530 and 837 are telephone area codes in the North American Numbering Plan (NANP) in northeastern and Northern California . 530 was created in 1997 in an area code split of 916 and 837 was added to the same numbering ...

  7. List of Massachusetts area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Massachusetts_area...

    Numbering plan areas and area codes since May 2001 September 1997 [1] – May 2001 [2] July 1988 [3] – September 1997 [4] [5] October 1947 – July 1988 [6]. Massachusetts is divided into five distinct numbering plan areas (NPAs), which are served by nine area codes in the North American Numbering Plan (NANP), [7] organized as four overlay complexes and a single-area code NPA.

  8. Area codes 518 and 838 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_518_and_838

    Area codes 518 and 838 are telephone area codes in the North American Numbering Plan for eastern Upstate New York in the United States. 518 is one of the 86 original North American area codes created in 1947. Area code 838 was added to the 518 numbering plan area in 2017. The two area codes serve 24 counties and 1,200 ZIP Code areas in a ...

  9. Area codes 541 and 458 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_541_and_458

    Area codes 541 and 458 are telephone area codes in the North American Numbering Plan (NANP) for most of the U.S. state of Oregon, excluding only the northwestern corner of the state. The service area includes the cities of Eugene , Springfield , Corvallis , Albany , Medford , Bend , Ashland , Klamath Falls , The Dalles , Burns , Lakeview , and ...