Area Code +1-307-(8540000...8549999) located in Riverton, Wyoming (WY), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 307 Subscriber Number From : 8540000 Subscriber Number To : 8549999 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 : ADVANCED COMM - WY 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 : WY Region Name : Wyoming City : Riverton Timezone : America/Denver Coordinated Universal Time : -07:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 43.0300 Longitude : -108.3800 ‹ previous : +1-307-(8510000...8519999) next › : +1-307-(8552000...8552999) Dialling Instructions For trunk calls: 0 307 8540000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 307 8540000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 8540000 ~ 8549999 (Count: 10,000) Example: +1-307-8540000 / 0111-307-8540000 (1307-8540000 / 1-307-8540000) +1-307-8540001 / 0111-307-8540001 (1307-8540001 / 1-307-8540001) +1-307-8540002 / 0111-307-8540002 (1307-8540002 / 1-307-8540002) +1-307-8540003 / 0111-307-8540003 (1307-8540003 / 1-307-8540003) +1-307-8540004 / 0111-307-8540004 (1307-8540004 / 1-307-8540004) ...+1-307-xxxxxxx / 0111-307-xxxxxxx (1307-xxxxxxx / 1-307-xxxxxxx) ...+1-307-8549995 / 0111-307-8549995 (1307-8549995 / 1-307-8549995) +1-307-8549996 / 0111-307-8549996 (1307-8549996 / 1-307-8549996) +1-307-8549997 / 0111-307-8549997 (1307-8549997 / 1-307-8549997) +1-307-8549998 / 0111-307-8549998 (1307-8549998 / 1-307-8549998) +1-307-8549999 / 0111-307-8549999 (1307-8549999 / 1-307-8549999)