Area Code +1-240-(4370000...4370999) located in Ashton 236, 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 : 4370000 Subscriber Number To : 4370999 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 : XO MARYLAND LLC 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 : Ashton 236 Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.1500 Longitude : -77.0100 ‹ previous : +1-240-(4369000...4369999) next › : +1-240-(4372000...4372999) Dialling Instructions For trunk calls: 0 240 4370000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 240 4370000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 4370000 ~ 4370999 (Count: 1,000) Example: +1-240-4370000 / 0111-240-4370000 (1240-4370000 / 1-240-4370000) +1-240-4370001 / 0111-240-4370001 (1240-4370001 / 1-240-4370001) +1-240-4370002 / 0111-240-4370002 (1240-4370002 / 1-240-4370002) +1-240-4370003 / 0111-240-4370003 (1240-4370003 / 1-240-4370003) +1-240-4370004 / 0111-240-4370004 (1240-4370004 / 1-240-4370004) ...+1-240-xxxxxxx / 0111-240-xxxxxxx (1240-xxxxxxx / 1-240-xxxxxxx) ...+1-240-4370995 / 0111-240-4370995 (1240-4370995 / 1-240-4370995) +1-240-4370996 / 0111-240-4370996 (1240-4370996 / 1-240-4370996) +1-240-4370997 / 0111-240-4370997 (1240-4370997 / 1-240-4370997) +1-240-4370998 / 0111-240-4370998 (1240-4370998 / 1-240-4370998) +1-240-4370999 / 0111-240-4370999 (1240-4370999 / 1-240-4370999)