Area Code +1-240-(2378000...2378999) located in Lexington Park-Great Mills, Maryland (MD), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 240 Subscriber Number From : 2378000 Subscriber Number To : 2378999 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 : IDT AMERICA CORP 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 : Lexington Park-Great Mills Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 38.2400 Longitude : -76.4900 ‹ previous : +1-240-(2377000...2377999) next › : +1-240-(2379000...2379999) Dialling Instructions For trunk calls: 0 240 2378000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 240 2378000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2378000 ~ 2378999 (Count: 1,000) Example: +1-240-2378000 / 0111-240-2378000 (1240-2378000 / 1-240-2378000) +1-240-2378001 / 0111-240-2378001 (1240-2378001 / 1-240-2378001) +1-240-2378002 / 0111-240-2378002 (1240-2378002 / 1-240-2378002) +1-240-2378003 / 0111-240-2378003 (1240-2378003 / 1-240-2378003) +1-240-2378004 / 0111-240-2378004 (1240-2378004 / 1-240-2378004) ...+1-240-xxxxxxx / 0111-240-xxxxxxx (1240-xxxxxxx / 1-240-xxxxxxx) ...+1-240-2378995 / 0111-240-2378995 (1240-2378995 / 1-240-2378995) +1-240-2378996 / 0111-240-2378996 (1240-2378996 / 1-240-2378996) +1-240-2378997 / 0111-240-2378997 (1240-2378997 / 1-240-2378997) +1-240-2378998 / 0111-240-2378998 (1240-2378998 / 1-240-2378998) +1-240-2378999 / 0111-240-2378999 (1240-2378999 / 1-240-2378999)