Area Code +1-301-(2850000...2859999) located in Silver Spring, 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 : 2850000 Subscriber Number To : 2859999 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 : Silver Spring Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.0100 Longitude : -77.0400 ‹ previous : +1-301-(2849000...2849999) next › : +1-301-(2860000...2869999) Dialling Instructions For trunk calls: 0 301 2850000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 2850000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2850000 ~ 2859999 (Count: 10,000) Example: +1-301-2850000 / 0111-301-2850000 (1301-2850000 / 1-301-2850000) +1-301-2850001 / 0111-301-2850001 (1301-2850001 / 1-301-2850001) +1-301-2850002 / 0111-301-2850002 (1301-2850002 / 1-301-2850002) +1-301-2850003 / 0111-301-2850003 (1301-2850003 / 1-301-2850003) +1-301-2850004 / 0111-301-2850004 (1301-2850004 / 1-301-2850004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-2859995 / 0111-301-2859995 (1301-2859995 / 1-301-2859995) +1-301-2859996 / 0111-301-2859996 (1301-2859996 / 1-301-2859996) +1-301-2859997 / 0111-301-2859997 (1301-2859997 / 1-301-2859997) +1-301-2859998 / 0111-301-2859998 (1301-2859998 / 1-301-2859998) +1-301-2859999 / 0111-301-2859999 (1301-2859999 / 1-301-2859999)