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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.
2 days ago · 406 is an area code located in the state of Montana, US. The largest city it serves is Billings. Location, time zone and map of the 406 area code
- UTC/GMT -6:00 hours
- MDT
- UTC/GMT -7:00 hours
Area code 406 serves the state of Montana. This area code was assigned on January 1st, 1947. On January 1st, 1947 it went into service. 406 is a General Purpose Code. Dialing pattern for local calls within the same NPA (area code) is 7D.
NxxCityUsageCompany Name200BillingsLandlineTeleport Communications America - Mt - ...201RosebudWirelessNew Cingular Wireless Pcs, Llc202HelenaWirelessNew Cingular Wireless Pcs, Llc203MissoulaLandlineLevel 3 Communications, Llc - Mt- Montana
- Mountain (GMT -07:00)
Oct 1, 2024 · 406 Area Code located in Montana, including 236 cities, 56 counties, 1 time zone, map, Census demographics, and 696 active prefixes.
The 406 Area Code is located in the state of Montana. Area Code 406 is one of the 269 three-digit telephone area codes in the USA. It covers roughly 7,439,790 unique phone numbers and 630,313 individuals near the cities of Billings, Missoula, and Great Falls.
Area code 406 is located in Montana and includes Billings. View the 406 area code map, major cities, location, timezone and more on TeraCodes.com.
406 Area code map. Where is the area code 406 located in Montana, United States? Area Code 406 coverage is shown in green.
