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2023: returned to the pool of area codes available for future area code relief; 457: Louisiana (Shreveport–Bossier City, Monroe, Alexandria, Fisher, Tallulah, and most of northern Louisiana) September 25, 2025 [3] to be overlaid on 318; previously a fictitious area code assigned to identify Naked DSL/Dry Loop and dedicated data lines in ...
This is a list of future area codes in the North American Numbering Plan (NANP) that are in the planning stages for relief of central office code exhaustion in the given numbering plan areas (NPAs). The dates are subject to change during implementation as published in the official NANP Administrator Planning Letters .
The state of Louisiana is served by the following area codes: 225, which serves the Baton Rouge area and parts of south central Louisiana; 318, which serves northern Louisiana; 337, which serves southwestern Louisiana; 504, which serves the New Orleans area; 985, which serves the sections of southeast Louisiana which are not within the 504 area ...
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An area code overlay is a numbering plan area (NPA) in the North American Numbering Plan (NANP) that has multiple area codes assigned. Overlay complexes are used to add central office prefixes in an NPA to increase the number of available telephone numbers .
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. The area code was assigned in 1957 in an area code split of area code 504 , to a numbering plan area that comprised nearly all of the state west of the Mississippi River , stretching from the Gulf ...
In the North American Numbering Plan, telephone area code 337 covers southwestern Louisiana. It was created in 1999. It was created in 1999. Until 1999/2000, this area was the southern half of area code 318 , which had covered most of Louisiana west of the Mississippi River since 1957.
This makes the fastest-dialing area code 212 (5 total clicks), followed by 312 and 213 (6 clicks). The area code 605 is much slower than these, at 21 clicks. Many large US cities generally had fast-dialing area codes with the middle digit 1. Touch-tone dialing, introduced later, eliminated the wait.