Area Code +1-406-(6490000...6499999) located in Saint Regis, 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 : 6490000 Subscriber Number To : 6499999 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 : BLACKFOOT TEL COOP 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 : Saint Regis Timezone : America/Denver Coordinated Universal Time : -07:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 47.3000 Longitude : -115.1000 ‹ previous : +1-406-(6489000...6489999) next › : +1-406-(6500000...6509999) Dialling Instructions For trunk calls: 0 406 6490000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 406 6490000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6490000 ~ 6499999 (Count: 10,000) Example: +1-406-6490000 / 0111-406-6490000 (1406-6490000 / 1-406-6490000) +1-406-6490001 / 0111-406-6490001 (1406-6490001 / 1-406-6490001) +1-406-6490002 / 0111-406-6490002 (1406-6490002 / 1-406-6490002) +1-406-6490003 / 0111-406-6490003 (1406-6490003 / 1-406-6490003) +1-406-6490004 / 0111-406-6490004 (1406-6490004 / 1-406-6490004) ...+1-406-xxxxxxx / 0111-406-xxxxxxx (1406-xxxxxxx / 1-406-xxxxxxx) ...+1-406-6499995 / 0111-406-6499995 (1406-6499995 / 1-406-6499995) +1-406-6499996 / 0111-406-6499996 (1406-6499996 / 1-406-6499996) +1-406-6499997 / 0111-406-6499997 (1406-6499997 / 1-406-6499997) +1-406-6499998 / 0111-406-6499998 (1406-6499998 / 1-406-6499998) +1-406-6499999 / 0111-406-6499999 (1406-6499999 / 1-406-6499999)