Area Code +1-240-(3775000...3775999) located in Indian Head, 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 : 3775000 Subscriber Number To : 3775999 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 : LEVEL 3 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 : Indian Head Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 38.6000 Longitude : -77.1600 ‹ previous : +1-240-(3774000...3774999) next › : +1-240-(3776000...3776999) Dialling Instructions For trunk calls: 0 240 3775000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 240 3775000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3775000 ~ 3775999 (Count: 1,000) Example: +1-240-3775000 / 0111-240-3775000 (1240-3775000 / 1-240-3775000) +1-240-3775001 / 0111-240-3775001 (1240-3775001 / 1-240-3775001) +1-240-3775002 / 0111-240-3775002 (1240-3775002 / 1-240-3775002) +1-240-3775003 / 0111-240-3775003 (1240-3775003 / 1-240-3775003) +1-240-3775004 / 0111-240-3775004 (1240-3775004 / 1-240-3775004) ...+1-240-xxxxxxx / 0111-240-xxxxxxx (1240-xxxxxxx / 1-240-xxxxxxx) ...+1-240-3775995 / 0111-240-3775995 (1240-3775995 / 1-240-3775995) +1-240-3775996 / 0111-240-3775996 (1240-3775996 / 1-240-3775996) +1-240-3775997 / 0111-240-3775997 (1240-3775997 / 1-240-3775997) +1-240-3775998 / 0111-240-3775998 (1240-3775998 / 1-240-3775998) +1-240-3775999 / 0111-240-3775999 (1240-3775999 / 1-240-3775999)