Area Code +1-203-(5173000...5173999) 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 : 5173000 Subscriber Number To : 5173999 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 : CTC COMMS CORP. - 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-(5172000...5172999) next › : +1-203-(5174000...5174999) Dialling Instructions For trunk calls: 0 203 5173000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 203 5173000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 5173000 ~ 5173999 (Count: 1,000) Example: +1-203-5173000 / 0111-203-5173000 (1203-5173000 / 1-203-5173000) +1-203-5173001 / 0111-203-5173001 (1203-5173001 / 1-203-5173001) +1-203-5173002 / 0111-203-5173002 (1203-5173002 / 1-203-5173002) +1-203-5173003 / 0111-203-5173003 (1203-5173003 / 1-203-5173003) +1-203-5173004 / 0111-203-5173004 (1203-5173004 / 1-203-5173004) ...+1-203-xxxxxxx / 0111-203-xxxxxxx (1203-xxxxxxx / 1-203-xxxxxxx) ...+1-203-5173995 / 0111-203-5173995 (1203-5173995 / 1-203-5173995) +1-203-5173996 / 0111-203-5173996 (1203-5173996 / 1-203-5173996) +1-203-5173997 / 0111-203-5173997 (1203-5173997 / 1-203-5173997) +1-203-5173998 / 0111-203-5173998 (1203-5173998 / 1-203-5173998) +1-203-5173999 / 0111-203-5173999 (1203-5173999 / 1-203-5173999)