Area Code +1-203-(7581000...7581999) located in Waterbury, 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 : 7581000 Subscriber Number To : 7581999 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 : Waterbury Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 41.5600 Longitude : -73.0500 ‹ previous : +1-203-(7580000...7580999) next › : +1-203-(7582000...7582999) Dialling Instructions For trunk calls: 0 203 7581000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 203 7581000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 7581000 ~ 7581999 (Count: 1,000) Example: +1-203-7581000 / 0111-203-7581000 (1203-7581000 / 1-203-7581000) +1-203-7581001 / 0111-203-7581001 (1203-7581001 / 1-203-7581001) +1-203-7581002 / 0111-203-7581002 (1203-7581002 / 1-203-7581002) +1-203-7581003 / 0111-203-7581003 (1203-7581003 / 1-203-7581003) +1-203-7581004 / 0111-203-7581004 (1203-7581004 / 1-203-7581004) ...+1-203-xxxxxxx / 0111-203-xxxxxxx (1203-xxxxxxx / 1-203-xxxxxxx) ...+1-203-7581995 / 0111-203-7581995 (1203-7581995 / 1-203-7581995) +1-203-7581996 / 0111-203-7581996 (1203-7581996 / 1-203-7581996) +1-203-7581997 / 0111-203-7581997 (1203-7581997 / 1-203-7581997) +1-203-7581998 / 0111-203-7581998 (1203-7581998 / 1-203-7581998) +1-203-7581999 / 0111-203-7581999 (1203-7581999 / 1-203-7581999)