Area Code +1-301-(2228000...2228999) located in Bethesda, 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 : 2228000 Subscriber Number To : 2228999 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 : CAVALIER MID-ATL 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 : Bethesda Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 38.9800 Longitude : -77.1100 ‹ previous : +1-301-(2227000...2227999) next › : +1-301-(2229000...2229999) Dialling Instructions For trunk calls: 0 301 2228000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 2228000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2228000 ~ 2228999 (Count: 1,000) Example: +1-301-2228000 / 0111-301-2228000 (1301-2228000 / 1-301-2228000) +1-301-2228001 / 0111-301-2228001 (1301-2228001 / 1-301-2228001) +1-301-2228002 / 0111-301-2228002 (1301-2228002 / 1-301-2228002) +1-301-2228003 / 0111-301-2228003 (1301-2228003 / 1-301-2228003) +1-301-2228004 / 0111-301-2228004 (1301-2228004 / 1-301-2228004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-2228995 / 0111-301-2228995 (1301-2228995 / 1-301-2228995) +1-301-2228996 / 0111-301-2228996 (1301-2228996 / 1-301-2228996) +1-301-2228997 / 0111-301-2228997 (1301-2228997 / 1-301-2228997) +1-301-2228998 / 0111-301-2228998 (1301-2228998 / 1-301-2228998) +1-301-2228999 / 0111-301-2228999 (1301-2228999 / 1-301-2228999)