Area Code +1-203-(5330000...5330999) located in Guilford, 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 : 5330000 Subscriber Number To : 5330999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : X (X) Carrier Name : LEVEL 3 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 : Guilford Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 41.2900 Longitude : -72.6800 ‹ previous : +1-203-(5329000...5329999) next › : +1-203-(5331000...5331999) Dialling Instructions For trunk calls: 0 203 5330000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 203 5330000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 5330000 ~ 5330999 (Count: 1,000) Example: +1-203-5330000 / 0111-203-5330000 (1203-5330000 / 1-203-5330000) +1-203-5330001 / 0111-203-5330001 (1203-5330001 / 1-203-5330001) +1-203-5330002 / 0111-203-5330002 (1203-5330002 / 1-203-5330002) +1-203-5330003 / 0111-203-5330003 (1203-5330003 / 1-203-5330003) +1-203-5330004 / 0111-203-5330004 (1203-5330004 / 1-203-5330004) ...+1-203-xxxxxxx / 0111-203-xxxxxxx (1203-xxxxxxx / 1-203-xxxxxxx) ...+1-203-5330995 / 0111-203-5330995 (1203-5330995 / 1-203-5330995) +1-203-5330996 / 0111-203-5330996 (1203-5330996 / 1-203-5330996) +1-203-5330997 / 0111-203-5330997 (1203-5330997 / 1-203-5330997) +1-203-5330998 / 0111-203-5330998 (1203-5330998 / 1-203-5330998) +1-203-5330999 / 0111-203-5330999 (1203-5330999 / 1-203-5330999)