Area Code +1-301-(2870000...2870999) located in Kensington, 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 : 2870000 Subscriber Number To : 2870999 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 : Kensington Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.0200 Longitude : -77.0800 ‹ previous : +1-301-(2860000...2869999) next › : +1-301-(2871000...2871999) Dialling Instructions For trunk calls: 0 301 2870000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 2870000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2870000 ~ 2870999 (Count: 1,000) Example: +1-301-2870000 / 0111-301-2870000 (1301-2870000 / 1-301-2870000) +1-301-2870001 / 0111-301-2870001 (1301-2870001 / 1-301-2870001) +1-301-2870002 / 0111-301-2870002 (1301-2870002 / 1-301-2870002) +1-301-2870003 / 0111-301-2870003 (1301-2870003 / 1-301-2870003) +1-301-2870004 / 0111-301-2870004 (1301-2870004 / 1-301-2870004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-2870995 / 0111-301-2870995 (1301-2870995 / 1-301-2870995) +1-301-2870996 / 0111-301-2870996 (1301-2870996 / 1-301-2870996) +1-301-2870997 / 0111-301-2870997 (1301-2870997 / 1-301-2870997) +1-301-2870998 / 0111-301-2870998 (1301-2870998 / 1-301-2870998) +1-301-2870999 / 0111-301-2870999 (1301-2870999 / 1-301-2870999)