Area Code +1-406-(2081000...2081999) 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 : 2081000 Subscriber Number To : 2081999 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-(2080000...2080999) next › : +1-406-(2082000...2082999) Dialling Instructions For trunk calls: 0 406 2081000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 406 2081000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2081000 ~ 2081999 (Count: 1,000) Example: +1-406-2081000 / 0111-406-2081000 (1406-2081000 / 1-406-2081000) +1-406-2081001 / 0111-406-2081001 (1406-2081001 / 1-406-2081001) +1-406-2081002 / 0111-406-2081002 (1406-2081002 / 1-406-2081002) +1-406-2081003 / 0111-406-2081003 (1406-2081003 / 1-406-2081003) +1-406-2081004 / 0111-406-2081004 (1406-2081004 / 1-406-2081004) ...+1-406-xxxxxxx / 0111-406-xxxxxxx (1406-xxxxxxx / 1-406-xxxxxxx) ...+1-406-2081995 / 0111-406-2081995 (1406-2081995 / 1-406-2081995) +1-406-2081996 / 0111-406-2081996 (1406-2081996 / 1-406-2081996) +1-406-2081997 / 0111-406-2081997 (1406-2081997 / 1-406-2081997) +1-406-2081998 / 0111-406-2081998 (1406-2081998 / 1-406-2081998) +1-406-2081999 / 0111-406-2081999 (1406-2081999 / 1-406-2081999)