Area Code +1-203-(4212000...4212999) located in Madison, 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 : 4212000 Subscriber Number To : 4212999 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 : COMCAST PHONE - 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 : Madison Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 41.2800 Longitude : -72.6000 ‹ previous : +1-203-(4211000...4211999) next › : +1-203-(4213000...4213999) Dialling Instructions For trunk calls: 0 203 4212000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 203 4212000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 4212000 ~ 4212999 (Count: 1,000) Example: +1-203-4212000 / 0111-203-4212000 (1203-4212000 / 1-203-4212000) +1-203-4212001 / 0111-203-4212001 (1203-4212001 / 1-203-4212001) +1-203-4212002 / 0111-203-4212002 (1203-4212002 / 1-203-4212002) +1-203-4212003 / 0111-203-4212003 (1203-4212003 / 1-203-4212003) +1-203-4212004 / 0111-203-4212004 (1203-4212004 / 1-203-4212004) ...+1-203-xxxxxxx / 0111-203-xxxxxxx (1203-xxxxxxx / 1-203-xxxxxxx) ...+1-203-4212995 / 0111-203-4212995 (1203-4212995 / 1-203-4212995) +1-203-4212996 / 0111-203-4212996 (1203-4212996 / 1-203-4212996) +1-203-4212997 / 0111-203-4212997 (1203-4212997 / 1-203-4212997) +1-203-4212998 / 0111-203-4212998 (1203-4212998 / 1-203-4212998) +1-203-4212999 / 0111-203-4212999 (1203-4212999 / 1-203-4212999)