Area Code +1-240-(2740000...2749999) 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 : 2740000 Subscriber Number To : 2749999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : NEW CINGULAR WRLS DC 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-(2739000...2739999) next › : +1-240-(2750000...2759999) Dialling Instructions For trunk calls: 0 240 2740000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 240 2740000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2740000 ~ 2749999 (Count: 10,000) Example: +1-240-2740000 / 0111-240-2740000 (1240-2740000 / 1-240-2740000) +1-240-2740001 / 0111-240-2740001 (1240-2740001 / 1-240-2740001) +1-240-2740002 / 0111-240-2740002 (1240-2740002 / 1-240-2740002) +1-240-2740003 / 0111-240-2740003 (1240-2740003 / 1-240-2740003) +1-240-2740004 / 0111-240-2740004 (1240-2740004 / 1-240-2740004) ...+1-240-xxxxxxx / 0111-240-xxxxxxx (1240-xxxxxxx / 1-240-xxxxxxx) ...+1-240-2749995 / 0111-240-2749995 (1240-2749995 / 1-240-2749995) +1-240-2749996 / 0111-240-2749996 (1240-2749996 / 1-240-2749996) +1-240-2749997 / 0111-240-2749997 (1240-2749997 / 1-240-2749997) +1-240-2749998 / 0111-240-2749998 (1240-2749998 / 1-240-2749998) +1-240-2749999 / 0111-240-2749999 (1240-2749999 / 1-240-2749999)