Area Code +1-406-(2013000...2013999) located in Forsyth, 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 : 2013000 Subscriber Number To : 2013999 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 : ONVOY LLC - 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 : Forsyth Timezone : America/Denver Coordinated Universal Time : -07:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 46.2700 Longitude : -106.6800 ‹ previous : +1-406-(2012000...2012999) next › : +1-406-(2014000...2014999) Dialling Instructions For trunk calls: 0 406 2013000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 406 2013000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2013000 ~ 2013999 (Count: 1,000) Example: +1-406-2013000 / 0111-406-2013000 (1406-2013000 / 1-406-2013000) +1-406-2013001 / 0111-406-2013001 (1406-2013001 / 1-406-2013001) +1-406-2013002 / 0111-406-2013002 (1406-2013002 / 1-406-2013002) +1-406-2013003 / 0111-406-2013003 (1406-2013003 / 1-406-2013003) +1-406-2013004 / 0111-406-2013004 (1406-2013004 / 1-406-2013004) ...+1-406-xxxxxxx / 0111-406-xxxxxxx (1406-xxxxxxx / 1-406-xxxxxxx) ...+1-406-2013995 / 0111-406-2013995 (1406-2013995 / 1-406-2013995) +1-406-2013996 / 0111-406-2013996 (1406-2013996 / 1-406-2013996) +1-406-2013997 / 0111-406-2013997 (1406-2013997 / 1-406-2013997) +1-406-2013998 / 0111-406-2013998 (1406-2013998 / 1-406-2013998) +1-406-2013999 / 0111-406-2013999 (1406-2013999 / 1-406-2013999)