Area Code +1-406-(4240000...4249999) located in Shelby, 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 : 4240000 Subscriber Number To : 4249999 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 : Shelby Timezone : America/Denver Coordinated Universal Time : -07:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 48.5100 Longitude : -111.8600 ‹ previous : +1-406-(4230000...4239999) next › : +1-406-(4250000...4250999) Dialling Instructions For trunk calls: 0 406 4240000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 406 4240000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 4240000 ~ 4249999 (Count: 10,000) Example: +1-406-4240000 / 0111-406-4240000 (1406-4240000 / 1-406-4240000) +1-406-4240001 / 0111-406-4240001 (1406-4240001 / 1-406-4240001) +1-406-4240002 / 0111-406-4240002 (1406-4240002 / 1-406-4240002) +1-406-4240003 / 0111-406-4240003 (1406-4240003 / 1-406-4240003) +1-406-4240004 / 0111-406-4240004 (1406-4240004 / 1-406-4240004) ...+1-406-xxxxxxx / 0111-406-xxxxxxx (1406-xxxxxxx / 1-406-xxxxxxx) ...+1-406-4249995 / 0111-406-4249995 (1406-4249995 / 1-406-4249995) +1-406-4249996 / 0111-406-4249996 (1406-4249996 / 1-406-4249996) +1-406-4249997 / 0111-406-4249997 (1406-4249997 / 1-406-4249997) +1-406-4249998 / 0111-406-4249998 (1406-4249998 / 1-406-4249998) +1-406-4249999 / 0111-406-4249999 (1406-4249999 / 1-406-4249999)