Area Code +1-301-(3050000...3059999) located in Frederick, 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 : 3050000 Subscriber Number To : 3059999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : SPRINT SPECTRUM LP 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 : Frederick Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.4200 Longitude : -77.4100 ‹ previous : +1-301-(3045000...3045999) next › : +1-301-(3060000...3069999) Dialling Instructions For trunk calls: 0 301 3050000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 3050000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3050000 ~ 3059999 (Count: 10,000) Example: +1-301-3050000 / 0111-301-3050000 (1301-3050000 / 1-301-3050000) +1-301-3050001 / 0111-301-3050001 (1301-3050001 / 1-301-3050001) +1-301-3050002 / 0111-301-3050002 (1301-3050002 / 1-301-3050002) +1-301-3050003 / 0111-301-3050003 (1301-3050003 / 1-301-3050003) +1-301-3050004 / 0111-301-3050004 (1301-3050004 / 1-301-3050004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-3059995 / 0111-301-3059995 (1301-3059995 / 1-301-3059995) +1-301-3059996 / 0111-301-3059996 (1301-3059996 / 1-301-3059996) +1-301-3059997 / 0111-301-3059997 (1301-3059997 / 1-301-3059997) +1-301-3059998 / 0111-301-3059998 (1301-3059998 / 1-301-3059998) +1-301-3059999 / 0111-301-3059999 (1301-3059999 / 1-301-3059999)