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List of municipalities in Montana
Area code 406
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]
List of ZIP Code prefixes
List of North American Numbering Plan area codes
Area codes 301, 240, and 227
Area code 207 is the sole telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Maine. Area code 207 was created as one of the original North American area codes in 1947. The numbering plan area retains its original boundaries, having never been split or overlaid. As of April 2020, area code 207 is not threatened ...
Name of place Number of counties Principal county ZIP code Lower Upper Cameron: 1 Madison County: 59720 Canyon Creek: 1 Lewis and Clark County: 59633 Capitol