Area Code +1-301-(2988000...2988999) located in Upper Marlboro, 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 : 2988000 Subscriber Number To : 2988999 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 : PEERLESS NTWK - 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 : Upper Marlboro Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 38.8200 Longitude : -76.7500 ‹ previous : +1-301-(2986000...2986999) next › : +1-301-(2989000...2989999) Dialling Instructions For trunk calls: 0 301 2988000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 2988000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2988000 ~ 2988999 (Count: 1,000) Example: +1-301-2988000 / 0111-301-2988000 (1301-2988000 / 1-301-2988000) +1-301-2988001 / 0111-301-2988001 (1301-2988001 / 1-301-2988001) +1-301-2988002 / 0111-301-2988002 (1301-2988002 / 1-301-2988002) +1-301-2988003 / 0111-301-2988003 (1301-2988003 / 1-301-2988003) +1-301-2988004 / 0111-301-2988004 (1301-2988004 / 1-301-2988004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-2988995 / 0111-301-2988995 (1301-2988995 / 1-301-2988995) +1-301-2988996 / 0111-301-2988996 (1301-2988996 / 1-301-2988996) +1-301-2988997 / 0111-301-2988997 (1301-2988997 / 1-301-2988997) +1-301-2988998 / 0111-301-2988998 (1301-2988998 / 1-301-2988998) +1-301-2988999 / 0111-301-2988999 (1301-2988999 / 1-301-2988999)