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Original numbering plan areas and area codes of Minnesota in 1952. When the American Telephone and Telegraph Company (AT&T) created the first nationwide telephone numbering plan for Operator Toll Dialing in 1947 to automate and speed the connection of long-distance calls, the United States and Canada were divided into 86 geographic numbering plan areas (NPAs) and assigned the original North ...
In August 2022, the North American Numbering Plan Administrator forecasted the exhaust of all available telephone numbers in 507 by 2025. [1] Area code 924 was approved as an all-service overlay to area code 507 by the Minnesota Public Utilities Commission on March 30, 2023. [2] [3] Ten-digit dialing is required as of July 2024. New 924 numbers ...
Minnesota (Duluth, Moorhead, Thief River Falls, Bemidji, Brainerd, International Falls, and most of northern Minnesota) 1947: 1954: split to create 507; 219: Indiana (Gary area) 1948: split of 317; 2002: split to create 260 and 574; 220: Ohio (suburban Columbus, central Ohio outside of Franklin County) April 22, 2015: overlaid on area code 740; 221
A map of Minnesota area codes. Area code 218 is a telephone area code in the North American Numbering Plan (NANP) for the northern part of the U.S. state of Minnesota.It is assigned to the largest of Minnesota's original two numbering plan areas (NPAs), although its geographical boundaries have been modified since inception.
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]
A map of Minnesota area codes. Area code 952 is the telephone area code in the North American Numbering Plan (NANP) for the southwestern suburbs of Minneapolis-St. Paul in the U.S. state of Minnesota. The numbering plan area (NPA) includes cities such as Bloomington, Eden Prairie, Edina and Minnetonka.
Minnesota was divided into a south-eastern area including the Twin Cities with area code 612 and the rest of the state in the south-west and north with area code 218. [2] In 1954, the southern half of 612 was designated a separate numbering plan area with area code 507 as the third area code for the state, while 612 was rotated out to cover ...
Location Notes Added Base 557 314 St. Louis, Missouri (communities such as, but not limited to, St. Louis, Overland, Bridgeton, Florissant, Webster Groves, Creve Coeur, Kirkwood and Sappington) Initial overlay area code plan was announced October 24, 2000. New 557 area code was announced in February 2022 and went into effect August 12, 2022.