Area Code +1-301-(2421000...2421999) located in Brandywine, 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 : 2421000 Subscriber Number To : 2421999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : X (X) Carrier Name : MCIMETRO ATS LLC 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 : Brandywine Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 38.7000 Longitude : -76.8500 ‹ previous : +1-301-(2420000...2420999) next › : +1-301-(2422000...2422999) Dialling Instructions For trunk calls: 0 301 2421000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 2421000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2421000 ~ 2421999 (Count: 1,000) Example: +1-301-2421000 / 0111-301-2421000 (1301-2421000 / 1-301-2421000) +1-301-2421001 / 0111-301-2421001 (1301-2421001 / 1-301-2421001) +1-301-2421002 / 0111-301-2421002 (1301-2421002 / 1-301-2421002) +1-301-2421003 / 0111-301-2421003 (1301-2421003 / 1-301-2421003) +1-301-2421004 / 0111-301-2421004 (1301-2421004 / 1-301-2421004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-2421995 / 0111-301-2421995 (1301-2421995 / 1-301-2421995) +1-301-2421996 / 0111-301-2421996 (1301-2421996 / 1-301-2421996) +1-301-2421997 / 0111-301-2421997 (1301-2421997 / 1-301-2421997) +1-301-2421998 / 0111-301-2421998 (1301-2421998 / 1-301-2421998) +1-301-2421999 / 0111-301-2421999 (1301-2421999 / 1-301-2421999)