Area code 318

Area code 318 is a telephone area code in the North American Numbering Plan (NANP) for the northern and central parts of the U.S. state of Louisiana.

In 1999, the southern half of the original 318, including Lafayette and Lake Charles, received area code 337.

Oakland and San Francisco had separate toll switches, so that calls had to be routed accordingly depending on the final destination.

When the electromechanical card-translator became available by 1953, translations using six digits were possible; the 318 code no longer was required.

In 1999, the southern half, including Lafayette and Lake Charles, was split off with area code 337.