Area Code +1-240-(2157000...2157999) 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 : 2157000 Subscriber Number To : 2157999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : VERIZON WIRELESS-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-(2156000...2156999) next › : +1-240-(2158000...2158999) Dialling Instructions For trunk calls: 0 240 2157000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 240 2157000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2157000 ~ 2157999 (Count: 1,000) Example: +1-240-2157000 / 0111-240-2157000 (1240-2157000 / 1-240-2157000) +1-240-2157001 / 0111-240-2157001 (1240-2157001 / 1-240-2157001) +1-240-2157002 / 0111-240-2157002 (1240-2157002 / 1-240-2157002) +1-240-2157003 / 0111-240-2157003 (1240-2157003 / 1-240-2157003) +1-240-2157004 / 0111-240-2157004 (1240-2157004 / 1-240-2157004) ...+1-240-xxxxxxx / 0111-240-xxxxxxx (1240-xxxxxxx / 1-240-xxxxxxx) ...+1-240-2157995 / 0111-240-2157995 (1240-2157995 / 1-240-2157995) +1-240-2157996 / 0111-240-2157996 (1240-2157996 / 1-240-2157996) +1-240-2157997 / 0111-240-2157997 (1240-2157997 / 1-240-2157997) +1-240-2157998 / 0111-240-2157998 (1240-2157998 / 1-240-2157998) +1-240-2157999 / 0111-240-2157999 (1240-2157999 / 1-240-2157999)