Area Code +1-406-(2165000...2165999) located in Great Falls, 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 : 2165000 Subscriber Number To : 2165999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : 3 RVRS TEL COOP MT 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 : Great Falls Timezone : America/Denver Coordinated Universal Time : -07:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 47.5100 Longitude : -111.2900 ‹ previous : +1-406-(2164000...2164999) next › : +1-406-(2166000...2166999) Dialling Instructions For trunk calls: 0 406 2165000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 406 2165000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2165000 ~ 2165999 (Count: 1,000) Example: +1-406-2165000 / 0111-406-2165000 (1406-2165000 / 1-406-2165000) +1-406-2165001 / 0111-406-2165001 (1406-2165001 / 1-406-2165001) +1-406-2165002 / 0111-406-2165002 (1406-2165002 / 1-406-2165002) +1-406-2165003 / 0111-406-2165003 (1406-2165003 / 1-406-2165003) +1-406-2165004 / 0111-406-2165004 (1406-2165004 / 1-406-2165004) ...+1-406-xxxxxxx / 0111-406-xxxxxxx (1406-xxxxxxx / 1-406-xxxxxxx) ...+1-406-2165995 / 0111-406-2165995 (1406-2165995 / 1-406-2165995) +1-406-2165996 / 0111-406-2165996 (1406-2165996 / 1-406-2165996) +1-406-2165997 / 0111-406-2165997 (1406-2165997 / 1-406-2165997) +1-406-2165998 / 0111-406-2165998 (1406-2165998 / 1-406-2165998) +1-406-2165999 / 0111-406-2165999 (1406-2165999 / 1-406-2165999)