Area Code +1-301-(3028000...3028999) located in Hagerstown, 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 : 3028000 Subscriber Number To : 3028999 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 : 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 : Hagerstown Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.6400 Longitude : -77.7200 ‹ previous : +1-301-(3027000...3027999) next › : +1-301-(3029000...3029999) Dialling Instructions For trunk calls: 0 301 3028000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 3028000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3028000 ~ 3028999 (Count: 1,000) Example: +1-301-3028000 / 0111-301-3028000 (1301-3028000 / 1-301-3028000) +1-301-3028001 / 0111-301-3028001 (1301-3028001 / 1-301-3028001) +1-301-3028002 / 0111-301-3028002 (1301-3028002 / 1-301-3028002) +1-301-3028003 / 0111-301-3028003 (1301-3028003 / 1-301-3028003) +1-301-3028004 / 0111-301-3028004 (1301-3028004 / 1-301-3028004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-3028995 / 0111-301-3028995 (1301-3028995 / 1-301-3028995) +1-301-3028996 / 0111-301-3028996 (1301-3028996 / 1-301-3028996) +1-301-3028997 / 0111-301-3028997 (1301-3028997 / 1-301-3028997) +1-301-3028998 / 0111-301-3028998 (1301-3028998 / 1-301-3028998) +1-301-3028999 / 0111-301-3028999 (1301-3028999 / 1-301-3028999)