Code | Territory or use | Date |
216 | Ohio (Cleveland area) | 1947 |
217 | Illinois (Springfield, Champaign, Decatur, Urbana, Lincoln, and parts of central Illinois) | 1947 |
218 | Minnesota (Duluth, Moorhead, Thief River Falls, Bemidji, Brainerd, International Falls, and most of northern Minnesota) | 1947 |
219 | Indiana (Gary area) | 1948 |
The original North American area codes were established by the American Telephone and Telegraph Company (AT&T) in 1947, after the demonstration of regional ...
The new numbering plan provided for 152 area codes, each with a capacity to serve as many as 540 central offices. Originally, only eighty-six area codes were ...
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Original North American area codes · List of North American Numbering Plan area codes · Telephone numbers in Mexico · Telephone numbers in Greenland · Telephone ...
This category lists the telephone area codes in the United States. Area codes in the North American Numbering Plan area may not contain 0 or 1 as the first ...
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Area code 213 was one of the original North American area codes of 1947 and 323 was created in an area code split of 213 in 1998. This was the fifth split ...
North American Numbering Plan. *. Number Portability Administration Center · Original North American area codes. A. Area code 458 and 541. C. Canadian Numbering ...
Area code 215 was one of the original North American area codes established in 1947, while 267 and 445 are overlay codes for the same numbering plan area (NPA).
Mar 2, 2020 · The original area codes had either 0 or 1 as the middle digit, but since 1995 there have been area codes such as 334 (Alabama), 323 (Los Angeles ...
May 29, 2019 · They're not random. In 1947, when the original 86 codes were conceived as part of the North American Numbering Plan, [1] they were carefully ...