Area Code +1-203-(4120000...4129999) located in New Haven, 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 : 4120000 Subscriber Number To : 4129999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : AMERICAN MESSAGING 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 : New Haven Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 41.3000 Longitude : -72.9300 ‹ previous : +1-203-(4100000...4109999) next › : +1-203-(4130000...4139999) Dialling Instructions For trunk calls: 0 203 4120000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 203 4120000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 4120000 ~ 4129999 (Count: 10,000) Example: +1-203-4120000 / 0111-203-4120000 (1203-4120000 / 1-203-4120000) +1-203-4120001 / 0111-203-4120001 (1203-4120001 / 1-203-4120001) +1-203-4120002 / 0111-203-4120002 (1203-4120002 / 1-203-4120002) +1-203-4120003 / 0111-203-4120003 (1203-4120003 / 1-203-4120003) +1-203-4120004 / 0111-203-4120004 (1203-4120004 / 1-203-4120004) ...+1-203-xxxxxxx / 0111-203-xxxxxxx (1203-xxxxxxx / 1-203-xxxxxxx) ...+1-203-4129995 / 0111-203-4129995 (1203-4129995 / 1-203-4129995) +1-203-4129996 / 0111-203-4129996 (1203-4129996 / 1-203-4129996) +1-203-4129997 / 0111-203-4129997 (1203-4129997 / 1-203-4129997) +1-203-4129998 / 0111-203-4129998 (1203-4129998 / 1-203-4129998) +1-203-4129999 / 0111-203-4129999 (1203-4129999 / 1-203-4129999)
