Area Code +1-203-(7729000...7729999) 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 : 7729000 Subscriber Number To : 7729999 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-(7728000...7728999) next › : +1-203-(7730000...7739999) Dialling Instructions For trunk calls: 0 203 7729000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 203 7729000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 7729000 ~ 7729999 (Count: 1,000) Example: +1-203-7729000 / 0111-203-7729000 (1203-7729000 / 1-203-7729000) +1-203-7729001 / 0111-203-7729001 (1203-7729001 / 1-203-7729001) +1-203-7729002 / 0111-203-7729002 (1203-7729002 / 1-203-7729002) +1-203-7729003 / 0111-203-7729003 (1203-7729003 / 1-203-7729003) +1-203-7729004 / 0111-203-7729004 (1203-7729004 / 1-203-7729004) ...+1-203-xxxxxxx / 0111-203-xxxxxxx (1203-xxxxxxx / 1-203-xxxxxxx) ...+1-203-7729995 / 0111-203-7729995 (1203-7729995 / 1-203-7729995) +1-203-7729996 / 0111-203-7729996 (1203-7729996 / 1-203-7729996) +1-203-7729997 / 0111-203-7729997 (1203-7729997 / 1-203-7729997) +1-203-7729998 / 0111-203-7729998 (1203-7729998 / 1-203-7729998) +1-203-7729999 / 0111-203-7729999 (1203-7729999 / 1-203-7729999)