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  2. Area code 404 - Wikipedia

    en.wikipedia.org/wiki/Area_code_404

    Area code 404. Area code 404 is a telephone area code in the North American Numbering Plan (NANP) for Atlanta, Georgia and its closest suburbs. This comprises roughly the area encircled by Interstate 285. It is an enclave area code, surrounded by area code 770, which serves most of Atlanta's suburbs. Both 404 and 770 are overlaid by area codes ...

  3. 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.

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

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

    568 reserved as a fifth area code for the region. 404: Georgia (Atlanta and the Atlanta metropolitan area inside of the Interstate 285 perimeter highway) 1947: created for all of Georgia; 1954: split to create area code 912; 1992: split to create area code 706; 1995: split to create area code 770; 1998: overlaid by 678; 405

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

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

    Telephone numbers in area code 678 were first assigned to customers signing up for new telephone service on January 15, 1998. 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.

  6. Area codes 904 and 324 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_904_and_324

    Area code 904 was created in an area code split of area code 305 in 1965. In 2024, ... Georgia area codes: 229, 404, 478, 678/470/943, 706/762, 770, 912

  7. List of Illinois area codes - Wikipedia

    en.wikipedia.org/wiki/List_of_Illinois_area_codes

    Area code 847 exhausted its numbers quickly, so that an overlay area code, 224, was implemented in 1996 for relief. However, mandatory ten-digit dialing was not in effect until 2002. In March 2007, an overlay plan was created for NPA 630 adding area code 331, and 779 was added to 815. With the depletion of new numbers in area codes 312 and 773 ...

  8. Area codes 706 and 762 - Wikipedia

    en.wikipedia.org/wiki/Area_codes_706_and_762

    The numbering plan area (NPA) is divided into three disconnected geographical regions. A small section is in west-central Georgia, in the region around Columbus. This is bordered by area code 334 to the west in Alabama, area code 478 to the east, area code 229 to the south, and metro Atlanta's 404, 678, 770, and 470.

  9. Area code 207 - Wikipedia

    en.wikipedia.org/wiki/Area_code_207

    Area code 207 is the sole telephone area code in the North American Numbering Plan ... 404 Kenduskeag: Penobscot: November 13, 2009 405 Portland: Cumberland: July 25 ...