Area Code +1-240-(4337000...4337999) located in Layhill, 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 : 4337000 Subscriber Number To : 4337999 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 : CAVALIER MID-ATL 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 : Layhill Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.0800 Longitude : -77.0500 ‹ previous : +1-240-(4336000...4336999) next › : +1-240-(4338000...4338999) Dialling Instructions For trunk calls: 0 240 4337000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 240 4337000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 4337000 ~ 4337999 (Count: 1,000) Example: +1-240-4337000 / 0111-240-4337000 (1240-4337000 / 1-240-4337000) +1-240-4337001 / 0111-240-4337001 (1240-4337001 / 1-240-4337001) +1-240-4337002 / 0111-240-4337002 (1240-4337002 / 1-240-4337002) +1-240-4337003 / 0111-240-4337003 (1240-4337003 / 1-240-4337003) +1-240-4337004 / 0111-240-4337004 (1240-4337004 / 1-240-4337004) ...+1-240-xxxxxxx / 0111-240-xxxxxxx (1240-xxxxxxx / 1-240-xxxxxxx) ...+1-240-4337995 / 0111-240-4337995 (1240-4337995 / 1-240-4337995) +1-240-4337996 / 0111-240-4337996 (1240-4337996 / 1-240-4337996) +1-240-4337997 / 0111-240-4337997 (1240-4337997 / 1-240-4337997) +1-240-4337998 / 0111-240-4337998 (1240-4337998 / 1-240-4337998) +1-240-4337999 / 0111-240-4337999 (1240-4337999 / 1-240-4337999)