Area Code +1-203-(7310000...7310999) located in Danbury, 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 : 7310000 Subscriber Number To : 7310999 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 : Danbury Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 41.4000 Longitude : -73.4500 ‹ previous : +1-203-(7300000...7309999) next › : +1-203-(7311000...7311999) Dialling Instructions For trunk calls: 0 203 7310000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 203 7310000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 7310000 ~ 7310999 (Count: 1,000) Example: +1-203-7310000 / 0111-203-7310000 (1203-7310000 / 1-203-7310000) +1-203-7310001 / 0111-203-7310001 (1203-7310001 / 1-203-7310001) +1-203-7310002 / 0111-203-7310002 (1203-7310002 / 1-203-7310002) +1-203-7310003 / 0111-203-7310003 (1203-7310003 / 1-203-7310003) +1-203-7310004 / 0111-203-7310004 (1203-7310004 / 1-203-7310004) ...+1-203-xxxxxxx / 0111-203-xxxxxxx (1203-xxxxxxx / 1-203-xxxxxxx) ...+1-203-7310995 / 0111-203-7310995 (1203-7310995 / 1-203-7310995) +1-203-7310996 / 0111-203-7310996 (1203-7310996 / 1-203-7310996) +1-203-7310997 / 0111-203-7310997 (1203-7310997 / 1-203-7310997) +1-203-7310998 / 0111-203-7310998 (1203-7310998 / 1-203-7310998) +1-203-7310999 / 0111-203-7310999 (1203-7310999 / 1-203-7310999)