Area Code +1-203-(7510000...7510999) 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 : 7510000 Subscriber Number To : 7510999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : NEW CINGULAR WRLS DC 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-(7500000...7509999) next › : +1-203-(7511000...7511999) Dialling Instructions For trunk calls: 0 203 7510000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 203 7510000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 7510000 ~ 7510999 (Count: 1,000) Example: +1-203-7510000 / 0111-203-7510000 (1203-7510000 / 1-203-7510000) +1-203-7510001 / 0111-203-7510001 (1203-7510001 / 1-203-7510001) +1-203-7510002 / 0111-203-7510002 (1203-7510002 / 1-203-7510002) +1-203-7510003 / 0111-203-7510003 (1203-7510003 / 1-203-7510003) +1-203-7510004 / 0111-203-7510004 (1203-7510004 / 1-203-7510004) ...+1-203-xxxxxxx / 0111-203-xxxxxxx (1203-xxxxxxx / 1-203-xxxxxxx) ...+1-203-7510995 / 0111-203-7510995 (1203-7510995 / 1-203-7510995) +1-203-7510996 / 0111-203-7510996 (1203-7510996 / 1-203-7510996) +1-203-7510997 / 0111-203-7510997 (1203-7510997 / 1-203-7510997) +1-203-7510998 / 0111-203-7510998 (1203-7510998 / 1-203-7510998) +1-203-7510999 / 0111-203-7510999 (1203-7510999 / 1-203-7510999)