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  2. List of Georgia area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Georgia_area_codes

    In 1947, Georgia was a single numbering plan area (NPA) with area code 404. In 1954, 912 was assigned to its southern and central areas. The state operated with two area codes until May 3, 1992, when area code 706 was created for the two separate areas outside of the metro Atlanta area.

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

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

    537 reserved as a fifth area code for the region. 906: Michigan (Upper Peninsula: Sault Ste. Marie, Escanaba, Houghton, Iron Mountain, Marquette, Menominee, etc.) March 19, 1961: split of 616; 907: Alaska (all, except the lone border town of Hyder which uses the BC, Canada area codes of 236, 250, 672, or 778 depending on its assigned number ...

  4. Category:Area codes in Georgia (U.S. state) - Wikipedia

    en.wikipedia.org/wiki/Category:Area_codes_in...

    List of Georgia area codes; 0–9. Area code 229; Area code 404; Area code 478; Area codes 678, 470, and 943; Area codes 706 and 762; Area code 770; Area code 912

  5. List of area code overlays - Wikipedia

    en.wikipedia.org/wiki/List_of_area_code_overlays

    An area code overlay is a numbering plan area ... Northern suburbs of Chicago, Illinois: 226, 382, 548: 519: ... Atlanta metropolitan area, Georgia: 474: 306:

  6. Area codes 630 and 331 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_630_and_331

    Area code 630 is the parent area code of the numbering plan area, created in a three-way area code split of area code 708 on August 3, 1996, with the southern suburbs keeping 708 and the northern suburbs receiving 847. Within a decade, 630 was close to exhaustion due to the growth of the Chicago suburbs and the proliferation of cell phones and ...

  7. Area code 312 - Wikipedia

    en.wikipedia.org/wiki/Area_code_312

    The numbering plan area is completely surrounded by area code 773, which serves the rest of Chicago. Both area codes form an overlay complex with area code 872. 312 is an enclave area code, and is roughly bounded by North Avenue on the north, Western Avenue on the west, and 35th Street on the south, with Lake Michigan to the east. In terms of ...

  8. List of Michigan area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Michigan_area_codes

    Michigan's numbering plan expanded from three area codes in 1947 to twelve: 1947: Area codes 313, 517 and 616 are three of the original 86 area codes in the North American Numbering Plan. 1961: Area code 906 was created in the first split of 616. 1993: Area code 810 was created in the first split of 313. 1997: Area code 734 was created in the ...

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

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

    On September 2, 2001, area code 470, was added to the 678 overlay area of area codes 404 and 770. [1] Telephone numbers from the NPA were assigned after exhaustion of area code 678. In October of 2020, the Georgia Public Service Commission approved the creation of a new overlay area code after NANPA exhaustion analyses projected shortfall of ...