Area Code +1-301-(3718000...3718999) located in Middletown, 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 : 3718000 Subscriber Number To : 3718999 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 : Middletown Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.4400 Longitude : -77.5400 ‹ previous : +1-301-(3717000...3717999) next › : +1-301-(3719000...3719999) Dialling Instructions For trunk calls: 0 301 3718000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 3718000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3718000 ~ 3718999 (Count: 1,000) Example: +1-301-3718000 / 0111-301-3718000 (1301-3718000 / 1-301-3718000) +1-301-3718001 / 0111-301-3718001 (1301-3718001 / 1-301-3718001) +1-301-3718002 / 0111-301-3718002 (1301-3718002 / 1-301-3718002) +1-301-3718003 / 0111-301-3718003 (1301-3718003 / 1-301-3718003) +1-301-3718004 / 0111-301-3718004 (1301-3718004 / 1-301-3718004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-3718995 / 0111-301-3718995 (1301-3718995 / 1-301-3718995) +1-301-3718996 / 0111-301-3718996 (1301-3718996 / 1-301-3718996) +1-301-3718997 / 0111-301-3718997 (1301-3718997 / 1-301-3718997) +1-301-3718998 / 0111-301-3718998 (1301-3718998 / 1-301-3718998) +1-301-3718999 / 0111-301-3718999 (1301-3718999 / 1-301-3718999)