Area Code +1-301-(3359000...3359999) located in Bethesda, 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 : 3359000 Subscriber Number To : 3359999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : NEW CINGULAR WRLS DC 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 : Bethesda Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 38.9800 Longitude : -77.1100 ‹ previous : +1-301-(3358000...3358999) next › : +1-301-(3360000...3369999) Dialling Instructions For trunk calls: 0 301 3359000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 3359000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3359000 ~ 3359999 (Count: 1,000) Example: +1-301-3359000 / 0111-301-3359000 (1301-3359000 / 1-301-3359000) +1-301-3359001 / 0111-301-3359001 (1301-3359001 / 1-301-3359001) +1-301-3359002 / 0111-301-3359002 (1301-3359002 / 1-301-3359002) +1-301-3359003 / 0111-301-3359003 (1301-3359003 / 1-301-3359003) +1-301-3359004 / 0111-301-3359004 (1301-3359004 / 1-301-3359004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-3359995 / 0111-301-3359995 (1301-3359995 / 1-301-3359995) +1-301-3359996 / 0111-301-3359996 (1301-3359996 / 1-301-3359996) +1-301-3359997 / 0111-301-3359997 (1301-3359997 / 1-301-3359997) +1-301-3359998 / 0111-301-3359998 (1301-3359998 / 1-301-3359998) +1-301-3359999 / 0111-301-3359999 (1301-3359999 / 1-301-3359999)