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This is a list of telephone area codes in the state of Missouri. The area codes are allocated within the North American Numbering Plan (NANP). The two original area codes for Missouri in 1947 were 314 and 816. Area code 417 was split off from 816 in 1950, and the other area codes followed more than 40 years later, due to the proliferation of ...
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 ...
Area code 816 served points generally north and west of Columbia and Jefferson City, while area code 314 served the eastern third of the state, including St. Louis. In 1951, area code 417 was created as the third code in the state, for southwestern Missouri, comprising the southern half of the original 816 boundaries. [1]
There are generally two widely accepted versions of a postal code: a ZIP code and a ZIP + 4 code. Established in 1963, ZIP codes are the most common and recognizable postal code used by the USPS.
Area code 407 was created in 1988 in a split of area code 305, [1] Florida's original area code of 1947. When assigned, 407 included not only most of Central Florida, but also the Palm Beaches and Treasure Coast. In 1996, Palm Beach, Martin, Indian River, and St. Lucie counties were split from the number plan area and received area code 561 ...
Initially, area codes with the middle digit 0 were assigned to numbering plan areas that comprised an entire state or province, while jurisdictions with multiple numbering plan areas received area codes having 1 as the second digit. As network growth could not be predicted accurately over more than a few years, this pattern was abandoned by ...
In 2006, the Illinois Commerce Commission approved an all-services overlay for the numbering plan area, adding new area code 447 in 2021. [ 3 ] [ 4 ] As of March 27, 2021, new central office codes are available for activation by service providers.
The three area codes are overlay codes for one numbering plan area, among which 410 was the initial area code for the NPA, when it was split from area code 301 in 1991. 443 and 667 found assignment primarily in cellular service and for competitive local exchange carriers, such as Comcast and Cavalier Telephone, when introduced, but have since ...