Area Code +1-240-(2159000...2159999) 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 : 2159000 Subscriber Number To : 2159999 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 : TELCOVE OPERAT - 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 : 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-(2158000...2158999) next › : +1-240-(2160000...2160999) Dialling Instructions For trunk calls: 0 240 2159000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 240 2159000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2159000 ~ 2159999 (Count: 1,000) Example: +1-240-2159000 / 0111-240-2159000 (1240-2159000 / 1-240-2159000) +1-240-2159001 / 0111-240-2159001 (1240-2159001 / 1-240-2159001) +1-240-2159002 / 0111-240-2159002 (1240-2159002 / 1-240-2159002) +1-240-2159003 / 0111-240-2159003 (1240-2159003 / 1-240-2159003) +1-240-2159004 / 0111-240-2159004 (1240-2159004 / 1-240-2159004) ...+1-240-xxxxxxx / 0111-240-xxxxxxx (1240-xxxxxxx / 1-240-xxxxxxx) ...+1-240-2159995 / 0111-240-2159995 (1240-2159995 / 1-240-2159995) +1-240-2159996 / 0111-240-2159996 (1240-2159996 / 1-240-2159996) +1-240-2159997 / 0111-240-2159997 (1240-2159997 / 1-240-2159997) +1-240-2159998 / 0111-240-2159998 (1240-2159998 / 1-240-2159998) +1-240-2159999 / 0111-240-2159999 (1240-2159999 / 1-240-2159999)