Area Code +1-301-(3489000...3489999) 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 : 3489000 Subscriber Number To : 3489999 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-(3487000...3487999) next › : +1-301-(3490000...3490999) Dialling Instructions For trunk calls: 0 301 3489000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 3489000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3489000 ~ 3489999 (Count: 1,000) Example: +1-301-3489000 / 0111-301-3489000 (1301-3489000 / 1-301-3489000) +1-301-3489001 / 0111-301-3489001 (1301-3489001 / 1-301-3489001) +1-301-3489002 / 0111-301-3489002 (1301-3489002 / 1-301-3489002) +1-301-3489003 / 0111-301-3489003 (1301-3489003 / 1-301-3489003) +1-301-3489004 / 0111-301-3489004 (1301-3489004 / 1-301-3489004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-3489995 / 0111-301-3489995 (1301-3489995 / 1-301-3489995) +1-301-3489996 / 0111-301-3489996 (1301-3489996 / 1-301-3489996) +1-301-3489997 / 0111-301-3489997 (1301-3489997 / 1-301-3489997) +1-301-3489998 / 0111-301-3489998 (1301-3489998 / 1-301-3489998) +1-301-3489999 / 0111-301-3489999 (1301-3489999 / 1-301-3489999)