Area Code +1-203-(6580000...6580999) 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 : 6580000 Subscriber Number To : 6580999 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 : TELEPORT COMM AM-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-(6570000...6579999) next › : +1-203-(6581000...6581999) Dialling Instructions For trunk calls: 0 203 6580000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 203 6580000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6580000 ~ 6580999 (Count: 1,000) Example: +1-203-6580000 / 0111-203-6580000 (1203-6580000 / 1-203-6580000) +1-203-6580001 / 0111-203-6580001 (1203-6580001 / 1-203-6580001) +1-203-6580002 / 0111-203-6580002 (1203-6580002 / 1-203-6580002) +1-203-6580003 / 0111-203-6580003 (1203-6580003 / 1-203-6580003) +1-203-6580004 / 0111-203-6580004 (1203-6580004 / 1-203-6580004) ...+1-203-xxxxxxx / 0111-203-xxxxxxx (1203-xxxxxxx / 1-203-xxxxxxx) ...+1-203-6580995 / 0111-203-6580995 (1203-6580995 / 1-203-6580995) +1-203-6580996 / 0111-203-6580996 (1203-6580996 / 1-203-6580996) +1-203-6580997 / 0111-203-6580997 (1203-6580997 / 1-203-6580997) +1-203-6580998 / 0111-203-6580998 (1203-6580998 / 1-203-6580998) +1-203-6580999 / 0111-203-6580999 (1203-6580999 / 1-203-6580999)