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Area code 406 is the telephone area code in the North American Numbering Plan for the entire U.S. state of Montana. It has been Montana's only area code since the American Telephone and Telegraph Company created a nationwide telephone numbering plan in 1947.
Area code dialing is optional in most geographical area codes, except Moscow (area codes 495, 498, 499); it is mandatory for non-geographical area codes. E.123 international and Microsoft formats are used for writing local phone numbers as well; international prefix and country code 7 are replaced with trunk code 8 (or 8~CC ) when dialing a ...
Area codes 304 and 681 are telephone area codes in the North American Numbering Plan (NANP) for the entirety of the U.S. state of West Virginia. The numbering plan area was established in October 1947 with area code 304, as one of the eighty-six original North American area codes .
Pages in category "Area codes in Montana" This category contains only the following page. This list may not reflect recent changes. 0–9. Area code 406
Map of geographic dialing codes. These tables list the dialing codes (area codes) for calling land lines for various cities and districts in Japan, when dialing from within Japan. The leading 0 is omitted when calling from outside Japan. Cell phones use the dialing codes of 070, 080 or 090. IP-based phone services use the 050 dialing code.
Area code: 406: FIPS code: 30-03175: GNIS feature ID: 2407787 [2] Avon is a census-designated place (CDP) in Powell County, Montana, United States.
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, north, and north-east 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.
Area code 505 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of New Mexico. Its numbering plan area (NPA) comprises the northwestern and central portions of the state, including the Albuquerque metropolitan area, Gallup , Santa Fe , and Farmington .