Area Code +1-406-(2020000...2020999) located in Helena, 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 : 2020000 Subscriber Number To : 2020999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : NEW CINGULAR WIRLESS 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 : Helena Timezone : America/Denver Coordinated Universal Time : -07:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 46.6000 Longitude : -112.0200 ‹ previous : +1-406-(2019000...2019999) next › : +1-406-(2021000...2021999) Dialling Instructions For trunk calls: 0 406 2020000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 406 2020000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2020000 ~ 2020999 (Count: 1,000) Example: +1-406-2020000 / 0111-406-2020000 (1406-2020000 / 1-406-2020000) +1-406-2020001 / 0111-406-2020001 (1406-2020001 / 1-406-2020001) +1-406-2020002 / 0111-406-2020002 (1406-2020002 / 1-406-2020002) +1-406-2020003 / 0111-406-2020003 (1406-2020003 / 1-406-2020003) +1-406-2020004 / 0111-406-2020004 (1406-2020004 / 1-406-2020004) ...+1-406-xxxxxxx / 0111-406-xxxxxxx (1406-xxxxxxx / 1-406-xxxxxxx) ...+1-406-2020995 / 0111-406-2020995 (1406-2020995 / 1-406-2020995) +1-406-2020996 / 0111-406-2020996 (1406-2020996 / 1-406-2020996) +1-406-2020997 / 0111-406-2020997 (1406-2020997 / 1-406-2020997) +1-406-2020998 / 0111-406-2020998 (1406-2020998 / 1-406-2020998) +1-406-2020999 / 0111-406-2020999 (1406-2020999 / 1-406-2020999)
