Area Code +1-301-(2440000...2440999) located in Silver Spring, 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 : 2440000 Subscriber Number To : 2440999 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 : XO MARYLAND 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 : Silver Spring Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.0100 Longitude : -77.0400 ‹ previous : +1-301-(2430000...2439999) next › : +1-301-(2441000...2441999) Dialling Instructions For trunk calls: 0 301 2440000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 2440000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2440000 ~ 2440999 (Count: 1,000) Example: +1-301-2440000 / 0111-301-2440000 (1301-2440000 / 1-301-2440000) +1-301-2440001 / 0111-301-2440001 (1301-2440001 / 1-301-2440001) +1-301-2440002 / 0111-301-2440002 (1301-2440002 / 1-301-2440002) +1-301-2440003 / 0111-301-2440003 (1301-2440003 / 1-301-2440003) +1-301-2440004 / 0111-301-2440004 (1301-2440004 / 1-301-2440004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-2440995 / 0111-301-2440995 (1301-2440995 / 1-301-2440995) +1-301-2440996 / 0111-301-2440996 (1301-2440996 / 1-301-2440996) +1-301-2440997 / 0111-301-2440997 (1301-2440997 / 1-301-2440997) +1-301-2440998 / 0111-301-2440998 (1301-2440998 / 1-301-2440998) +1-301-2440999 / 0111-301-2440999 (1301-2440999 / 1-301-2440999)