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  1. Area codes 317 and 463. Coordinates: 39.768333°N 86.158056°W. Area codes 317 and 463 are telephone area codes in the North American Numbering Plan (NANP) for Indianapolis and nine surrounding counties in central Indiana. The numbering plan area (NPA) comprises all or parts of Marion, Boone, Hancock, Hamilton, Hendricks, Johnson ...

  2. Vor 3 Tagen · 317 is an area code in Indiana, US, serving Indianapolis and other cities. Learn about its location, time zone, map and daylight saving time.

  3. Area code 317 serves the state of Indiana. This area code was assigned on January 1st, 1947. On January 1st, 1947 it went into service. 317 is a General Purpose Code. 317 service area does overlap with 463 area codes. Dialing pattern for local calls within the same NPA (area code) is 10D.

  4. area code 387 is reserved as a fifth code for the region; 417: Missouri (Springfield, Joplin, Branson, Lamar, Lebanon, and most of southwestern Missouri) 1950: created from parts of the area codes 314 and 816; 418: Quebec (Quebec City, Saguenay, the Gaspé Peninsula, Côte-Nord, Chibougamau, St-Georges), Maine (Estcourt Station) 1947: 2008 ...

    Code
    Territory Or Use
    Date
    200
    not in use; available for non-geographic ...
    easily recognizable code (ERC)
    New Jersey ( Bergen County and Hudson ...
    1947
    1947
    Southwestern Connecticut ( Bridgeport, ...
    1947
  5. The second area code, 202, was assigned to the District of Columbia. The allocation of area codes was readjusted as early as 1948 to account for inadequacies in some metropolitan areas. For example, the Indiana numbering plan area 317 was divided to provide a larger numbering pool in the Indiana suburbs of Chicago (area code 219).

  6. In 1948, northern Indiana received an extra area code for its Chicago suburbs by dividing area code 317. In 1950, southwest Missouri, with a new toll-center in Joplin, received area code 417, a change that provided more central offices in Kansas City.