Area Code +1-301-(2660000...2669999) located in Waldorf, 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 : 2660000 Subscriber Number To : 2669999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : NEW CINGULAR WRLS DC 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 : Waldorf Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 38.6300 Longitude : -76.9100 ‹ previous : +1-301-(2659000...2659999) next › : +1-301-(2670000...2670999) Dialling Instructions For trunk calls: 0 301 2660000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 2660000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2660000 ~ 2669999 (Count: 10,000) Example: +1-301-2660000 / 0111-301-2660000 (1301-2660000 / 1-301-2660000) +1-301-2660001 / 0111-301-2660001 (1301-2660001 / 1-301-2660001) +1-301-2660002 / 0111-301-2660002 (1301-2660002 / 1-301-2660002) +1-301-2660003 / 0111-301-2660003 (1301-2660003 / 1-301-2660003) +1-301-2660004 / 0111-301-2660004 (1301-2660004 / 1-301-2660004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-2669995 / 0111-301-2669995 (1301-2669995 / 1-301-2669995) +1-301-2669996 / 0111-301-2669996 (1301-2669996 / 1-301-2669996) +1-301-2669997 / 0111-301-2669997 (1301-2669997 / 1-301-2669997) +1-301-2669998 / 0111-301-2669998 (1301-2669998 / 1-301-2669998) +1-301-2669999 / 0111-301-2669999 (1301-2669999 / 1-301-2669999)