Area Code +1-203-(7647000...7647999) located in New Haven, 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 : 7647000 Subscriber Number To : 7647999 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 : New Haven Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 41.3000 Longitude : -72.9300 ‹ previous : +1-203-(7646000...7646999) next › : +1-203-(7648000...7648999) Dialling Instructions For trunk calls: 0 203 7647000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 203 7647000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 7647000 ~ 7647999 (Count: 1,000) Example: +1-203-7647000 / 0111-203-7647000 (1203-7647000 / 1-203-7647000) +1-203-7647001 / 0111-203-7647001 (1203-7647001 / 1-203-7647001) +1-203-7647002 / 0111-203-7647002 (1203-7647002 / 1-203-7647002) +1-203-7647003 / 0111-203-7647003 (1203-7647003 / 1-203-7647003) +1-203-7647004 / 0111-203-7647004 (1203-7647004 / 1-203-7647004) ...+1-203-xxxxxxx / 0111-203-xxxxxxx (1203-xxxxxxx / 1-203-xxxxxxx) ...+1-203-7647995 / 0111-203-7647995 (1203-7647995 / 1-203-7647995) +1-203-7647996 / 0111-203-7647996 (1203-7647996 / 1-203-7647996) +1-203-7647997 / 0111-203-7647997 (1203-7647997 / 1-203-7647997) +1-203-7647998 / 0111-203-7647998 (1203-7647998 / 1-203-7647998) +1-203-7647999 / 0111-203-7647999 (1203-7647999 / 1-203-7647999)