Area Code +1-203-(7320000...7329999) located in Ansonia-Derby, 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 : 7320000 Subscriber Number To : 7329999 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 : FRONTIER COMM - CT 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 : Ansonia-Derby Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 41.3200 Longitude : -73.0900 ‹ previous : +1-203-(7319000...7319999) next › : +1-203-(7330000...7339999) Dialling Instructions For trunk calls: 0 203 7320000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 203 7320000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 7320000 ~ 7329999 (Count: 10,000) Example: +1-203-7320000 / 0111-203-7320000 (1203-7320000 / 1-203-7320000) +1-203-7320001 / 0111-203-7320001 (1203-7320001 / 1-203-7320001) +1-203-7320002 / 0111-203-7320002 (1203-7320002 / 1-203-7320002) +1-203-7320003 / 0111-203-7320003 (1203-7320003 / 1-203-7320003) +1-203-7320004 / 0111-203-7320004 (1203-7320004 / 1-203-7320004) ...+1-203-xxxxxxx / 0111-203-xxxxxxx (1203-xxxxxxx / 1-203-xxxxxxx) ...+1-203-7329995 / 0111-203-7329995 (1203-7329995 / 1-203-7329995) +1-203-7329996 / 0111-203-7329996 (1203-7329996 / 1-203-7329996) +1-203-7329997 / 0111-203-7329997 (1203-7329997 / 1-203-7329997) +1-203-7329998 / 0111-203-7329998 (1203-7329998 / 1-203-7329998) +1-203-7329999 / 0111-203-7329999 (1203-7329999 / 1-203-7329999)