Area Code +1-203-(7799000...7799999) located in Madison, Connecticut (CT), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 203 Subscriber Number From : 7799000 Subscriber Number To : 7799999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : SPRINT SPECTRUM LP 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 : CT Region Name : Connecticut City : Madison Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 41.2800 Longitude : -72.6000 ‹ previous : +1-203-(7798000...7798999) next › : +1-203-(7800000...7800999) Dialling Instructions For trunk calls: 0 203 7799000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 203 7799000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 7799000 ~ 7799999 (Count: 1,000) Example: +1-203-7799000 / 0111-203-7799000 (1203-7799000 / 1-203-7799000) +1-203-7799001 / 0111-203-7799001 (1203-7799001 / 1-203-7799001) +1-203-7799002 / 0111-203-7799002 (1203-7799002 / 1-203-7799002) +1-203-7799003 / 0111-203-7799003 (1203-7799003 / 1-203-7799003) +1-203-7799004 / 0111-203-7799004 (1203-7799004 / 1-203-7799004) ...+1-203-xxxxxxx / 0111-203-xxxxxxx (1203-xxxxxxx / 1-203-xxxxxxx) ...+1-203-7799995 / 0111-203-7799995 (1203-7799995 / 1-203-7799995) +1-203-7799996 / 0111-203-7799996 (1203-7799996 / 1-203-7799996) +1-203-7799997 / 0111-203-7799997 (1203-7799997 / 1-203-7799997) +1-203-7799998 / 0111-203-7799998 (1203-7799998 / 1-203-7799998) +1-203-7799999 / 0111-203-7799999 (1203-7799999 / 1-203-7799999)