Area Code +1-301-(3490000...3490999) located in Poolesville, 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 : 3490000 Subscriber Number To : 3490999 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 : Poolesville Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.1400 Longitude : -77.4200 ‹ previous : +1-301-(3489000...3489999) next › : +1-301-(3491000...3491999) Dialling Instructions For trunk calls: 0 301 3490000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 3490000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3490000 ~ 3490999 (Count: 1,000) Example: +1-301-3490000 / 0111-301-3490000 (1301-3490000 / 1-301-3490000) +1-301-3490001 / 0111-301-3490001 (1301-3490001 / 1-301-3490001) +1-301-3490002 / 0111-301-3490002 (1301-3490002 / 1-301-3490002) +1-301-3490003 / 0111-301-3490003 (1301-3490003 / 1-301-3490003) +1-301-3490004 / 0111-301-3490004 (1301-3490004 / 1-301-3490004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-3490995 / 0111-301-3490995 (1301-3490995 / 1-301-3490995) +1-301-3490996 / 0111-301-3490996 (1301-3490996 / 1-301-3490996) +1-301-3490997 / 0111-301-3490997 (1301-3490997 / 1-301-3490997) +1-301-3490998 / 0111-301-3490998 (1301-3490998 / 1-301-3490998) +1-301-3490999 / 0111-301-3490999 (1301-3490999 / 1-301-3490999)