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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 Cellular Phones and Pagers.
The area code split became effective at day end of January 7, 1996, with a permissive dialing period commencing until July 7, 1996, during which the new numbering plan area could be dialed with either area code. On May 1, 2022, the Missouri Public Service Commission (MPSC) approved an all-services distributed overlay complex for the 573 ...
Area codes 314 and 557 are telephone area codes in the North American ... NANPA area code map of Missouri ; Missouri area codes: 314/557, 417, 573/235, 636, 660, 816/ ...
Area codes with two identical trailing digits ... area code 387 is reserved as a fifth code for the region; 417: Missouri ... 573: Missouri (Columbia ...
List of Missouri area codes; 0–9. Area codes 314 and 557; Area code 417; Area codes 573 and 235; Area code 636; Area code 660; Area codes 816 and 975 This page ...
Area code: 573: FIPS code: 29-48710 [3] GNIS feature ID: 2396768 [2] ... The old Missouri Pacific line between St. Louis and Texarkana serves Mineral Point. References
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 ...
Area code: 573: FIPS code: 29-28180 [3] GNIS feature ID: 2394956 [2] ... Historic maps of Grandin in the Sanborn Maps of Missouri Collection at the University of Missouri