Area code 318

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Area code 318 is a telephone area code that covers northern and central Louisiana. In 1957, Louisiana's only area code, 504, was split, creating area code 318.

Originally, area code 318 covered nearly all of the state west of the Mississippi River, stretching from the Gulf of Mexico north to the border with Arkansas. In 1999, the southern portion of the "original" 318 became area code 337.

318 had been assigned, temporarily, for San Francisco, because Oakland and San Francisco had separate toll switches, so calls had to be routed accordingly depending on the final destination. As the telephone equipment used at the time handled only three-digit translation, the temporary use of an area code, 318, was required to distinguish between the two Bay Area cities. Area code 318 temporarily was used to specify San Francisco and areas north of the Golden Gate Bridge, while calls with destinations in Oakland or the East Bay used area code 415. When the electromechanical Card-Translator box became available by 1953, translations using six digits were possible; the 318 code no longer was required. The entire San Francisco Bay Area returned to using area code 415.

Cities in area code 318[edit]

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Louisiana area codes: 225, 318, 337, 504, 985
North: 870
West: 409, 430/903, 936area code 318East: 601/769, 662
South: 225, 337
Arkansas area codes: 479, 501, 870
Mississippi area codes: 228, 601, 662, 769
Texas area codes: 210, 214, 254, 281, 325, 346, 361, 409, 430, 432, 469, 512, 682, 713, 737, 806, 817, 830, 832, 903, 915, 936, 940, 956, 972, 979