Area Code +1-301-(2877000...2877999) 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 : 2877000 Subscriber Number To : 2877999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : X (X) 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-(2876000...2876999) next › : +1-301-(2878000...2878999) Dialling Instructions For trunk calls: 0 301 2877000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 2877000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2877000 ~ 2877999 (Count: 1,000) Example: +1-301-2877000 / 0111-301-2877000 (1301-2877000 / 1-301-2877000) +1-301-2877001 / 0111-301-2877001 (1301-2877001 / 1-301-2877001) +1-301-2877002 / 0111-301-2877002 (1301-2877002 / 1-301-2877002) +1-301-2877003 / 0111-301-2877003 (1301-2877003 / 1-301-2877003) +1-301-2877004 / 0111-301-2877004 (1301-2877004 / 1-301-2877004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-2877995 / 0111-301-2877995 (1301-2877995 / 1-301-2877995) +1-301-2877996 / 0111-301-2877996 (1301-2877996 / 1-301-2877996) +1-301-2877997 / 0111-301-2877997 (1301-2877997 / 1-301-2877997) +1-301-2877998 / 0111-301-2877998 (1301-2877998 / 1-301-2877998) +1-301-2877999 / 0111-301-2877999 (1301-2877999 / 1-301-2877999)