Area Code +1-203-(7312000...7312999) located in Danbury, 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 : 7312000 Subscriber Number To : 7312999 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 : Danbury Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 41.4000 Longitude : -73.4500 ‹ previous : +1-203-(7311000...7311999) next › : +1-203-(7313000...7313999) Dialling Instructions For trunk calls: 0 203 7312000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 203 7312000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 7312000 ~ 7312999 (Count: 1,000) Example: +1-203-7312000 / 0111-203-7312000 (1203-7312000 / 1-203-7312000) +1-203-7312001 / 0111-203-7312001 (1203-7312001 / 1-203-7312001) +1-203-7312002 / 0111-203-7312002 (1203-7312002 / 1-203-7312002) +1-203-7312003 / 0111-203-7312003 (1203-7312003 / 1-203-7312003) +1-203-7312004 / 0111-203-7312004 (1203-7312004 / 1-203-7312004) ...+1-203-xxxxxxx / 0111-203-xxxxxxx (1203-xxxxxxx / 1-203-xxxxxxx) ...+1-203-7312995 / 0111-203-7312995 (1203-7312995 / 1-203-7312995) +1-203-7312996 / 0111-203-7312996 (1203-7312996 / 1-203-7312996) +1-203-7312997 / 0111-203-7312997 (1203-7312997 / 1-203-7312997) +1-203-7312998 / 0111-203-7312998 (1203-7312998 / 1-203-7312998) +1-203-7312999 / 0111-203-7312999 (1203-7312999 / 1-203-7312999)