Area Code +1-301-(2974000...2974999) located in Clinton, 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 : 2974000 Subscriber Number To : 2974999 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 : Clinton Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 38.7700 Longitude : -76.9000 ‹ previous : +1-301-(2972000...2972999) next › : +1-301-(2975000...2975999) Dialling Instructions For trunk calls: 0 301 2974000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 2974000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2974000 ~ 2974999 (Count: 1,000) Example: +1-301-2974000 / 0111-301-2974000 (1301-2974000 / 1-301-2974000) +1-301-2974001 / 0111-301-2974001 (1301-2974001 / 1-301-2974001) +1-301-2974002 / 0111-301-2974002 (1301-2974002 / 1-301-2974002) +1-301-2974003 / 0111-301-2974003 (1301-2974003 / 1-301-2974003) +1-301-2974004 / 0111-301-2974004 (1301-2974004 / 1-301-2974004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-2974995 / 0111-301-2974995 (1301-2974995 / 1-301-2974995) +1-301-2974996 / 0111-301-2974996 (1301-2974996 / 1-301-2974996) +1-301-2974997 / 0111-301-2974997 (1301-2974997 / 1-301-2974997) +1-301-2974998 / 0111-301-2974998 (1301-2974998 / 1-301-2974998) +1-301-2974999 / 0111-301-2974999 (1301-2974999 / 1-301-2974999)