Area Code +1-240-(3360000...3369999) located in Bethesda, 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 : 3360000 Subscriber Number To : 3369999 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 : CORE COMM - 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 : Bethesda Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 38.9800 Longitude : -77.1100 ‹ previous : +1-240-(3359000...3359999) next › : +1-240-(3370000...3379999) Dialling Instructions For trunk calls: 0 240 3360000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 240 3360000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3360000 ~ 3369999 (Count: 10,000) Example: +1-240-3360000 / 0111-240-3360000 (1240-3360000 / 1-240-3360000) +1-240-3360001 / 0111-240-3360001 (1240-3360001 / 1-240-3360001) +1-240-3360002 / 0111-240-3360002 (1240-3360002 / 1-240-3360002) +1-240-3360003 / 0111-240-3360003 (1240-3360003 / 1-240-3360003) +1-240-3360004 / 0111-240-3360004 (1240-3360004 / 1-240-3360004) ...+1-240-xxxxxxx / 0111-240-xxxxxxx (1240-xxxxxxx / 1-240-xxxxxxx) ...+1-240-3369995 / 0111-240-3369995 (1240-3369995 / 1-240-3369995) +1-240-3369996 / 0111-240-3369996 (1240-3369996 / 1-240-3369996) +1-240-3369997 / 0111-240-3369997 (1240-3369997 / 1-240-3369997) +1-240-3369998 / 0111-240-3369998 (1240-3369998 / 1-240-3369998) +1-240-3369999 / 0111-240-3369999 (1240-3369999 / 1-240-3369999)