Area Code +1-301-(3166000...3166999) located in Capitol Heights, Maryland (MD), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 301 Subscriber Number From : 3166000 Subscriber Number To : 3166999 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 : VERIZON MARYLAND INC 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 : MD Region Name : Maryland City : Capitol Heights Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 38.8800 Longitude : -76.9200 ‹ previous : +1-301-(3165000...3165999) next › : +1-301-(3167000...3167999) Dialling Instructions For trunk calls: 0 301 3166000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 3166000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3166000 ~ 3166999 (Count: 1,000) Example: +1-301-3166000 / 0111-301-3166000 (1301-3166000 / 1-301-3166000) +1-301-3166001 / 0111-301-3166001 (1301-3166001 / 1-301-3166001) +1-301-3166002 / 0111-301-3166002 (1301-3166002 / 1-301-3166002) +1-301-3166003 / 0111-301-3166003 (1301-3166003 / 1-301-3166003) +1-301-3166004 / 0111-301-3166004 (1301-3166004 / 1-301-3166004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-3166995 / 0111-301-3166995 (1301-3166995 / 1-301-3166995) +1-301-3166996 / 0111-301-3166996 (1301-3166996 / 1-301-3166996) +1-301-3166997 / 0111-301-3166997 (1301-3166997 / 1-301-3166997) +1-301-3166998 / 0111-301-3166998 (1301-3166998 / 1-301-3166998) +1-301-3166999 / 0111-301-3166999 (1301-3166999 / 1-301-3166999)