Area Code +1-203-(3480000...3489999) located in Stamford, 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 : 3480000 Subscriber Number To : 3489999 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 : FRONTIER 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 : Stamford Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 41.0500 Longitude : -73.5400 ‹ previous : +1-203-(3479000...3479999) next › : +1-203-(3490000...3490999) Dialling Instructions For trunk calls: 0 203 3480000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 203 3480000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3480000 ~ 3489999 (Count: 10,000) Example: +1-203-3480000 / 0111-203-3480000 (1203-3480000 / 1-203-3480000) +1-203-3480001 / 0111-203-3480001 (1203-3480001 / 1-203-3480001) +1-203-3480002 / 0111-203-3480002 (1203-3480002 / 1-203-3480002) +1-203-3480003 / 0111-203-3480003 (1203-3480003 / 1-203-3480003) +1-203-3480004 / 0111-203-3480004 (1203-3480004 / 1-203-3480004) ...+1-203-xxxxxxx / 0111-203-xxxxxxx (1203-xxxxxxx / 1-203-xxxxxxx) ...+1-203-3489995 / 0111-203-3489995 (1203-3489995 / 1-203-3489995) +1-203-3489996 / 0111-203-3489996 (1203-3489996 / 1-203-3489996) +1-203-3489997 / 0111-203-3489997 (1203-3489997 / 1-203-3489997) +1-203-3489998 / 0111-203-3489998 (1203-3489998 / 1-203-3489998) +1-203-3489999 / 0111-203-3489999 (1203-3489999 / 1-203-3489999)