Area Code +1-203-(4091000...4091999) located in Old Greenwich, 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 : 4091000 Subscriber Number To : 4091999 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 : PEERLESS NTWK - 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 : Old Greenwich Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 41.0200 Longitude : -73.5600 ‹ previous : +1-203-(4090000...4090999) next › : +1-203-(4092000...4092999) Dialling Instructions For trunk calls: 0 203 4091000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 203 4091000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 4091000 ~ 4091999 (Count: 1,000) Example: +1-203-4091000 / 0111-203-4091000 (1203-4091000 / 1-203-4091000) +1-203-4091001 / 0111-203-4091001 (1203-4091001 / 1-203-4091001) +1-203-4091002 / 0111-203-4091002 (1203-4091002 / 1-203-4091002) +1-203-4091003 / 0111-203-4091003 (1203-4091003 / 1-203-4091003) +1-203-4091004 / 0111-203-4091004 (1203-4091004 / 1-203-4091004) ...+1-203-xxxxxxx / 0111-203-xxxxxxx (1203-xxxxxxx / 1-203-xxxxxxx) ...+1-203-4091995 / 0111-203-4091995 (1203-4091995 / 1-203-4091995) +1-203-4091996 / 0111-203-4091996 (1203-4091996 / 1-203-4091996) +1-203-4091997 / 0111-203-4091997 (1203-4091997 / 1-203-4091997) +1-203-4091998 / 0111-203-4091998 (1203-4091998 / 1-203-4091998) +1-203-4091999 / 0111-203-4091999 (1203-4091999 / 1-203-4091999)