Area Code +1-301-(3100000...3100999) located in Laurel 238, 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 : 3100000 Subscriber Number To : 3100999 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 : Laurel 238 Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.1000 Longitude : -76.8400 ‹ previous : +1-301-(3090000...3099999) next › : +1-301-(3101000...3101999) Dialling Instructions For trunk calls: 0 301 3100000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 3100000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3100000 ~ 3100999 (Count: 1,000) Example: +1-301-3100000 / 0111-301-3100000 (1301-3100000 / 1-301-3100000) +1-301-3100001 / 0111-301-3100001 (1301-3100001 / 1-301-3100001) +1-301-3100002 / 0111-301-3100002 (1301-3100002 / 1-301-3100002) +1-301-3100003 / 0111-301-3100003 (1301-3100003 / 1-301-3100003) +1-301-3100004 / 0111-301-3100004 (1301-3100004 / 1-301-3100004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-3100995 / 0111-301-3100995 (1301-3100995 / 1-301-3100995) +1-301-3100996 / 0111-301-3100996 (1301-3100996 / 1-301-3100996) +1-301-3100997 / 0111-301-3100997 (1301-3100997 / 1-301-3100997) +1-301-3100998 / 0111-301-3100998 (1301-3100998 / 1-301-3100998) +1-301-3100999 / 0111-301-3100999 (1301-3100999 / 1-301-3100999)