Area Code +1-301-(3133000...3133999) located in Berwyn, 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 : 3133000 Subscriber Number To : 3133999 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 : VERIZON MARYLAND INC 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 : Berwyn Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 38.9900 Longitude : -76.9100 ‹ previous : +1-301-(3132000...3132999) next › : +1-301-(3134000...3134999) Dialling Instructions For trunk calls: 0 301 3133000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 3133000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3133000 ~ 3133999 (Count: 1,000) Example: +1-301-3133000 / 0111-301-3133000 (1301-3133000 / 1-301-3133000) +1-301-3133001 / 0111-301-3133001 (1301-3133001 / 1-301-3133001) +1-301-3133002 / 0111-301-3133002 (1301-3133002 / 1-301-3133002) +1-301-3133003 / 0111-301-3133003 (1301-3133003 / 1-301-3133003) +1-301-3133004 / 0111-301-3133004 (1301-3133004 / 1-301-3133004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-3133995 / 0111-301-3133995 (1301-3133995 / 1-301-3133995) +1-301-3133996 / 0111-301-3133996 (1301-3133996 / 1-301-3133996) +1-301-3133997 / 0111-301-3133997 (1301-3133997 / 1-301-3133997) +1-301-3133998 / 0111-301-3133998 (1301-3133998 / 1-301-3133998) +1-301-3133999 / 0111-301-3133999 (1301-3133999 / 1-301-3133999)