Area Code +1-301-(2849000...2849999) 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 : 2849000 Subscriber Number To : 2849999 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-(2848000...2848999) next › : +1-301-(2850000...2859999) Dialling Instructions For trunk calls: 0 301 2849000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 2849000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2849000 ~ 2849999 (Count: 1,000) Example: +1-301-2849000 / 0111-301-2849000 (1301-2849000 / 1-301-2849000) +1-301-2849001 / 0111-301-2849001 (1301-2849001 / 1-301-2849001) +1-301-2849002 / 0111-301-2849002 (1301-2849002 / 1-301-2849002) +1-301-2849003 / 0111-301-2849003 (1301-2849003 / 1-301-2849003) +1-301-2849004 / 0111-301-2849004 (1301-2849004 / 1-301-2849004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-2849995 / 0111-301-2849995 (1301-2849995 / 1-301-2849995) +1-301-2849996 / 0111-301-2849996 (1301-2849996 / 1-301-2849996) +1-301-2849997 / 0111-301-2849997 (1301-2849997 / 1-301-2849997) +1-301-2849998 / 0111-301-2849998 (1301-2849998 / 1-301-2849998) +1-301-2849999 / 0111-301-2849999 (1301-2849999 / 1-301-2849999)