Area Code +1-203-(2170000...2179999) located in Waterbury, 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 : 2170000 Subscriber Number To : 2179999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : NEW CINGULAR WRLS DC 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 : Waterbury Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 41.5600 Longitude : -73.0500 ‹ previous : +1-203-(2169000...2169999) next › : +1-203-(2180000...2189999) Dialling Instructions For trunk calls: 0 203 2170000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 203 2170000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2170000 ~ 2179999 (Count: 10,000) Example: +1-203-2170000 / 0111-203-2170000 (1203-2170000 / 1-203-2170000) +1-203-2170001 / 0111-203-2170001 (1203-2170001 / 1-203-2170001) +1-203-2170002 / 0111-203-2170002 (1203-2170002 / 1-203-2170002) +1-203-2170003 / 0111-203-2170003 (1203-2170003 / 1-203-2170003) +1-203-2170004 / 0111-203-2170004 (1203-2170004 / 1-203-2170004) ...+1-203-xxxxxxx / 0111-203-xxxxxxx (1203-xxxxxxx / 1-203-xxxxxxx) ...+1-203-2179995 / 0111-203-2179995 (1203-2179995 / 1-203-2179995) +1-203-2179996 / 0111-203-2179996 (1203-2179996 / 1-203-2179996) +1-203-2179997 / 0111-203-2179997 (1203-2179997 / 1-203-2179997) +1-203-2179998 / 0111-203-2179998 (1203-2179998 / 1-203-2179998) +1-203-2179999 / 0111-203-2179999 (1203-2179999 / 1-203-2179999)