Area Code +1-203-(3699000...3699999) 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 : 3699000 Subscriber Number To : 3699999 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 : BROOKS FIBER COM-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-(3698000...3698999) next › : +1-203-(3700000...3709999) Dialling Instructions For trunk calls: 0 203 3699000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 203 3699000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3699000 ~ 3699999 (Count: 1,000) Example: +1-203-3699000 / 0111-203-3699000 (1203-3699000 / 1-203-3699000) +1-203-3699001 / 0111-203-3699001 (1203-3699001 / 1-203-3699001) +1-203-3699002 / 0111-203-3699002 (1203-3699002 / 1-203-3699002) +1-203-3699003 / 0111-203-3699003 (1203-3699003 / 1-203-3699003) +1-203-3699004 / 0111-203-3699004 (1203-3699004 / 1-203-3699004) ...+1-203-xxxxxxx / 0111-203-xxxxxxx (1203-xxxxxxx / 1-203-xxxxxxx) ...+1-203-3699995 / 0111-203-3699995 (1203-3699995 / 1-203-3699995) +1-203-3699996 / 0111-203-3699996 (1203-3699996 / 1-203-3699996) +1-203-3699997 / 0111-203-3699997 (1203-3699997 / 1-203-3699997) +1-203-3699998 / 0111-203-3699998 (1203-3699998 / 1-203-3699998) +1-203-3699999 / 0111-203-3699999 (1203-3699999 / 1-203-3699999)