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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 ...
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.
not in use; code is reserved for directory assistance applications 1-NPA-555-01XX is used for fictional telephone numbers; 1-NPA-555-1212 is used for directory assistance; and other 1-NPA-555-XXXX numbers can be used for other 555 services; 556: not in use; available for personal communications services: 557
Conservation measures, such as number pooling, mitigated the immediate need for relief. [5] More than twenty years after that announcement, area code 557 was overlaid on August 12, 2022, as the available numbers in 314 neared exhaustion. [6] Prior to October 2021, area code 314 had telephone numbers assigned for the central office code 988.
This area code was therefore scheduled to transition to ten-digit dialing by October 24, 2021. [7] An October 2021 exhaust analysis by the NANPA projected central office code exhaustion by 2023. [8] As a result, an overlay with area code 975 was scheduled with an in-service date of October 13, 2023.
Printable version; In other projects Wikidata item; Appearance. move to sidebar hide. Help ... List of Missouri area codes; 0–9. Area codes 314 and 557; Area code 417;
Telephone numbers listed in 1920 in New York City having three-letter exchange prefixes. In the United States, the most-populous cities, such as New York City, Philadelphia, Boston, and Chicago, initially implemented dial service with telephone numbers consisting of three letters and four digits (3L-4N) according to a system developed by W. G. Blauvelt of AT&T in 1917. [1]
Area code 636 is a telephone area code in North American Numbering Plan (NANP) for the east-central part of the U.S. state of Missouri, comprising mainly the western suburbs of St. Louis.