Area Code +1-406-(2084000...2084999) located in Billings, Montana (MT), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 406 Subscriber Number From : 2084000 Subscriber Number To : 2084999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : NEW CINGULAR WIRLESS Click here to buy United States Area Code Database Other Information Language Code : en (English) Country Number : 840 (United States) Country Code : US (United States) Region Code : MT Region Name : Montana City : Billings Timezone : America/Denver Coordinated Universal Time : -07:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 45.7800 Longitude : -108.5000 ‹ previous : +1-406-(2083000...2083999) next › : +1-406-(2085000...2085999) Dialling Instructions For trunk calls: 0 406 2084000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 406 2084000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2084000 ~ 2084999 (Count: 1,000) Example: +1-406-2084000 / 0111-406-2084000 (1406-2084000 / 1-406-2084000) +1-406-2084001 / 0111-406-2084001 (1406-2084001 / 1-406-2084001) +1-406-2084002 / 0111-406-2084002 (1406-2084002 / 1-406-2084002) +1-406-2084003 / 0111-406-2084003 (1406-2084003 / 1-406-2084003) +1-406-2084004 / 0111-406-2084004 (1406-2084004 / 1-406-2084004) ...+1-406-xxxxxxx / 0111-406-xxxxxxx (1406-xxxxxxx / 1-406-xxxxxxx) ...+1-406-2084995 / 0111-406-2084995 (1406-2084995 / 1-406-2084995) +1-406-2084996 / 0111-406-2084996 (1406-2084996 / 1-406-2084996) +1-406-2084997 / 0111-406-2084997 (1406-2084997 / 1-406-2084997) +1-406-2084998 / 0111-406-2084998 (1406-2084998 / 1-406-2084998) +1-406-2084999 / 0111-406-2084999 (1406-2084999 / 1-406-2084999)