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They also serves all of southeastern Missouri (including the Missouri Bootheel area) and areas adjacent to the Mississippi River. 573 was created on January 7, 1996, in a split of area code 314, which was limited to the St. Louis metropolitan area in Missouri, and 235 was added on March 24, 2024 as part of an overlay complex.
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.
573: Missouri (Columbia, Jefferson City, Hannibal, Cape Girardeau, ... but it was replaced by a 304-932 exchange area code + exchange number in Charleston; 933:
Relief planning entailed the division of the numbering plan area to create a new area code, 573, for most areas outside of the St. Louis metropolitan area, which would retain area code 314. 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 ...
Each NPA was identified by a three-digit area code used as a prefix to each local telephone number. The United States received seventy-seven area codes, and Canada nine. The initial system of numbering plan areas and area codes was expanded rapidly during the ensuing decades, and established the North American Numbering Plan (NANP).
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: 29-28180 [3] GNIS feature ID: 2394956 [2] ... Historic maps of Grandin in the Sanborn Maps of Missouri Collection at the University of Missouri
Area code: 573: FIPS code: 29-57116 [4] GNIS feature ID: ... Perryville is home to a number of ... Historic maps of Perryville in the Sanborn Maps of Missouri ...