Area Code +1-203-(2450000...2459999) 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 : 2450000 Subscriber Number To : 2459999 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 : 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-(2449000...2449999) next › : +1-203-(2460000...2460999) Dialling Instructions For trunk calls: 0 203 2450000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 203 2450000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2450000 ~ 2459999 (Count: 10,000) Example: +1-203-2450000 / 0111-203-2450000 (1203-2450000 / 1-203-2450000) +1-203-2450001 / 0111-203-2450001 (1203-2450001 / 1-203-2450001) +1-203-2450002 / 0111-203-2450002 (1203-2450002 / 1-203-2450002) +1-203-2450003 / 0111-203-2450003 (1203-2450003 / 1-203-2450003) +1-203-2450004 / 0111-203-2450004 (1203-2450004 / 1-203-2450004) ...+1-203-xxxxxxx / 0111-203-xxxxxxx (1203-xxxxxxx / 1-203-xxxxxxx) ...+1-203-2459995 / 0111-203-2459995 (1203-2459995 / 1-203-2459995) +1-203-2459996 / 0111-203-2459996 (1203-2459996 / 1-203-2459996) +1-203-2459997 / 0111-203-2459997 (1203-2459997 / 1-203-2459997) +1-203-2459998 / 0111-203-2459998 (1203-2459998 / 1-203-2459998) +1-203-2459999 / 0111-203-2459999 (1203-2459999 / 1-203-2459999)