Area Code +1-301-(3375000...3375999) located in Gaithersburg, 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 : 3375000 Subscriber Number To : 3375999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : VERIZON WIRELESS-MD 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 : Gaithersburg Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.1400 Longitude : -77.2000 ‹ previous : +1-301-(3374000...3374999) next › : +1-301-(3376000...3376999) Dialling Instructions For trunk calls: 0 301 3375000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 3375000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3375000 ~ 3375999 (Count: 1,000) Example: +1-301-3375000 / 0111-301-3375000 (1301-3375000 / 1-301-3375000) +1-301-3375001 / 0111-301-3375001 (1301-3375001 / 1-301-3375001) +1-301-3375002 / 0111-301-3375002 (1301-3375002 / 1-301-3375002) +1-301-3375003 / 0111-301-3375003 (1301-3375003 / 1-301-3375003) +1-301-3375004 / 0111-301-3375004 (1301-3375004 / 1-301-3375004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-3375995 / 0111-301-3375995 (1301-3375995 / 1-301-3375995) +1-301-3375996 / 0111-301-3375996 (1301-3375996 / 1-301-3375996) +1-301-3375997 / 0111-301-3375997 (1301-3375997 / 1-301-3375997) +1-301-3375998 / 0111-301-3375998 (1301-3375998 / 1-301-3375998) +1-301-3375999 / 0111-301-3375999 (1301-3375999 / 1-301-3375999)