Area Code +1-301-(3137000...3137999) 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 : 3137000 Subscriber Number To : 3137999 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-(3136000...3136999) next › : +1-301-(3138000...3138999) Dialling Instructions For trunk calls: 0 301 3137000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 3137000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3137000 ~ 3137999 (Count: 1,000) Example: +1-301-3137000 / 0111-301-3137000 (1301-3137000 / 1-301-3137000) +1-301-3137001 / 0111-301-3137001 (1301-3137001 / 1-301-3137001) +1-301-3137002 / 0111-301-3137002 (1301-3137002 / 1-301-3137002) +1-301-3137003 / 0111-301-3137003 (1301-3137003 / 1-301-3137003) +1-301-3137004 / 0111-301-3137004 (1301-3137004 / 1-301-3137004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-3137995 / 0111-301-3137995 (1301-3137995 / 1-301-3137995) +1-301-3137996 / 0111-301-3137996 (1301-3137996 / 1-301-3137996) +1-301-3137997 / 0111-301-3137997 (1301-3137997 / 1-301-3137997) +1-301-3137998 / 0111-301-3137998 (1301-3137998 / 1-301-3137998) +1-301-3137999 / 0111-301-3137999 (1301-3137999 / 1-301-3137999)