Area Code +1-301-(3393000...3393999) located in Rockville, 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 : 3393000 Subscriber Number To : 3393999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : OMNIPOINT COMM CAP 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 : Rockville Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.0900 Longitude : -77.1600 ‹ previous : +1-301-(3392000...3392999) next › : +1-301-(3394000...3394999) Dialling Instructions For trunk calls: 0 301 3393000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 3393000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3393000 ~ 3393999 (Count: 1,000) Example: +1-301-3393000 / 0111-301-3393000 (1301-3393000 / 1-301-3393000) +1-301-3393001 / 0111-301-3393001 (1301-3393001 / 1-301-3393001) +1-301-3393002 / 0111-301-3393002 (1301-3393002 / 1-301-3393002) +1-301-3393003 / 0111-301-3393003 (1301-3393003 / 1-301-3393003) +1-301-3393004 / 0111-301-3393004 (1301-3393004 / 1-301-3393004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-3393995 / 0111-301-3393995 (1301-3393995 / 1-301-3393995) +1-301-3393996 / 0111-301-3393996 (1301-3393996 / 1-301-3393996) +1-301-3393997 / 0111-301-3393997 (1301-3393997 / 1-301-3393997) +1-301-3393998 / 0111-301-3393998 (1301-3393998 / 1-301-3393998) +1-301-3393999 / 0111-301-3393999 (1301-3393999 / 1-301-3393999)