Area Code +1-203-(7370000...7370999) 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 : 7370000 Subscriber Number To : 7370999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : OMNIPOINT 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-(7369000...7369999) next › : +1-203-(7371000...7371999) Dialling Instructions For trunk calls: 0 203 7370000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 203 7370000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 7370000 ~ 7370999 (Count: 1,000) Example: +1-203-7370000 / 0111-203-7370000 (1203-7370000 / 1-203-7370000) +1-203-7370001 / 0111-203-7370001 (1203-7370001 / 1-203-7370001) +1-203-7370002 / 0111-203-7370002 (1203-7370002 / 1-203-7370002) +1-203-7370003 / 0111-203-7370003 (1203-7370003 / 1-203-7370003) +1-203-7370004 / 0111-203-7370004 (1203-7370004 / 1-203-7370004) ...+1-203-xxxxxxx / 0111-203-xxxxxxx (1203-xxxxxxx / 1-203-xxxxxxx) ...+1-203-7370995 / 0111-203-7370995 (1203-7370995 / 1-203-7370995) +1-203-7370996 / 0111-203-7370996 (1203-7370996 / 1-203-7370996) +1-203-7370997 / 0111-203-7370997 (1203-7370997 / 1-203-7370997) +1-203-7370998 / 0111-203-7370998 (1203-7370998 / 1-203-7370998) +1-203-7370999 / 0111-203-7370999 (1203-7370999 / 1-203-7370999)