Area Code +1-301-(2965000...2965999) 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 : 2965000 Subscriber Number To : 2965999 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 : MCI WORLDCOM COMM 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 : 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-(2964000...2964999) next › : +1-301-(2966000...2966999) Dialling Instructions For trunk calls: 0 301 2965000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 2965000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2965000 ~ 2965999 (Count: 1,000) Example: +1-301-2965000 / 0111-301-2965000 (1301-2965000 / 1-301-2965000) +1-301-2965001 / 0111-301-2965001 (1301-2965001 / 1-301-2965001) +1-301-2965002 / 0111-301-2965002 (1301-2965002 / 1-301-2965002) +1-301-2965003 / 0111-301-2965003 (1301-2965003 / 1-301-2965003) +1-301-2965004 / 0111-301-2965004 (1301-2965004 / 1-301-2965004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-2965995 / 0111-301-2965995 (1301-2965995 / 1-301-2965995) +1-301-2965996 / 0111-301-2965996 (1301-2965996 / 1-301-2965996) +1-301-2965997 / 0111-301-2965997 (1301-2965997 / 1-301-2965997) +1-301-2965998 / 0111-301-2965998 (1301-2965998 / 1-301-2965998) +1-301-2965999 / 0111-301-2965999 (1301-2965999 / 1-301-2965999)