Area Code +1-240-(2366000...2366999) located in Frederick, 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 : 2366000 Subscriber Number To : 2366999 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 : VERIZON MARYLAND INC 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 : Frederick Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.4200 Longitude : -77.4100 ‹ previous : +1-240-(2365000...2365999) next › : +1-240-(2367000...2367999) Dialling Instructions For trunk calls: 0 240 2366000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 240 2366000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2366000 ~ 2366999 (Count: 1,000) Example: +1-240-2366000 / 0111-240-2366000 (1240-2366000 / 1-240-2366000) +1-240-2366001 / 0111-240-2366001 (1240-2366001 / 1-240-2366001) +1-240-2366002 / 0111-240-2366002 (1240-2366002 / 1-240-2366002) +1-240-2366003 / 0111-240-2366003 (1240-2366003 / 1-240-2366003) +1-240-2366004 / 0111-240-2366004 (1240-2366004 / 1-240-2366004) ...+1-240-xxxxxxx / 0111-240-xxxxxxx (1240-xxxxxxx / 1-240-xxxxxxx) ...+1-240-2366995 / 0111-240-2366995 (1240-2366995 / 1-240-2366995) +1-240-2366996 / 0111-240-2366996 (1240-2366996 / 1-240-2366996) +1-240-2366997 / 0111-240-2366997 (1240-2366997 / 1-240-2366997) +1-240-2366998 / 0111-240-2366998 (1240-2366998 / 1-240-2366998) +1-240-2366999 / 0111-240-2366999 (1240-2366999 / 1-240-2366999)