Area Code +1-301-(3480000...3480999) 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 : 3480000 Subscriber Number To : 3480999 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-(3470000...3479999) next › : +1-301-(3481000...3481999) Dialling Instructions For trunk calls: 0 301 3480000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 3480000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3480000 ~ 3480999 (Count: 1,000) Example: +1-301-3480000 / 0111-301-3480000 (1301-3480000 / 1-301-3480000) +1-301-3480001 / 0111-301-3480001 (1301-3480001 / 1-301-3480001) +1-301-3480002 / 0111-301-3480002 (1301-3480002 / 1-301-3480002) +1-301-3480003 / 0111-301-3480003 (1301-3480003 / 1-301-3480003) +1-301-3480004 / 0111-301-3480004 (1301-3480004 / 1-301-3480004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-3480995 / 0111-301-3480995 (1301-3480995 / 1-301-3480995) +1-301-3480996 / 0111-301-3480996 (1301-3480996 / 1-301-3480996) +1-301-3480997 / 0111-301-3480997 (1301-3480997 / 1-301-3480997) +1-301-3480998 / 0111-301-3480998 (1301-3480998 / 1-301-3480998) +1-301-3480999 / 0111-301-3480999 (1301-3480999 / 1-301-3480999)