Area Code +1-406-(2256000...2256999) located in Boulder, 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 : 2256000 Subscriber Number To : 2256999 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 : YMAX COMMS CORP. 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 : Boulder Timezone : America/Denver Coordinated Universal Time : -07:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 46.2400 Longitude : -112.1200 ‹ previous : +1-406-(2255000...2255999) next › : +1-406-(2257000...2257999) Dialling Instructions For trunk calls: 0 406 2256000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 406 2256000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2256000 ~ 2256999 (Count: 1,000) Example: +1-406-2256000 / 0111-406-2256000 (1406-2256000 / 1-406-2256000) +1-406-2256001 / 0111-406-2256001 (1406-2256001 / 1-406-2256001) +1-406-2256002 / 0111-406-2256002 (1406-2256002 / 1-406-2256002) +1-406-2256003 / 0111-406-2256003 (1406-2256003 / 1-406-2256003) +1-406-2256004 / 0111-406-2256004 (1406-2256004 / 1-406-2256004) ...+1-406-xxxxxxx / 0111-406-xxxxxxx (1406-xxxxxxx / 1-406-xxxxxxx) ...+1-406-2256995 / 0111-406-2256995 (1406-2256995 / 1-406-2256995) +1-406-2256996 / 0111-406-2256996 (1406-2256996 / 1-406-2256996) +1-406-2256997 / 0111-406-2256997 (1406-2256997 / 1-406-2256997) +1-406-2256998 / 0111-406-2256998 (1406-2256998 / 1-406-2256998) +1-406-2256999 / 0111-406-2256999 (1406-2256999 / 1-406-2256999)