Area Code +1-301-(3340000...3349999) located in Oakland, 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 : 3340000 Subscriber Number To : 3349999 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 : Oakland Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.4100 Longitude : -79.4100 ‹ previous : +1-301-(3330000...3339999) next › : +1-301-(3350000...3350999) Dialling Instructions For trunk calls: 0 301 3340000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 3340000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3340000 ~ 3349999 (Count: 10,000) Example: +1-301-3340000 / 0111-301-3340000 (1301-3340000 / 1-301-3340000) +1-301-3340001 / 0111-301-3340001 (1301-3340001 / 1-301-3340001) +1-301-3340002 / 0111-301-3340002 (1301-3340002 / 1-301-3340002) +1-301-3340003 / 0111-301-3340003 (1301-3340003 / 1-301-3340003) +1-301-3340004 / 0111-301-3340004 (1301-3340004 / 1-301-3340004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-3349995 / 0111-301-3349995 (1301-3349995 / 1-301-3349995) +1-301-3349996 / 0111-301-3349996 (1301-3349996 / 1-301-3349996) +1-301-3349997 / 0111-301-3349997 (1301-3349997 / 1-301-3349997) +1-301-3349998 / 0111-301-3349998 (1301-3349998 / 1-301-3349998) +1-301-3349999 / 0111-301-3349999 (1301-3349999 / 1-301-3349999)