Area Code +1-240-(4139000...4139999) located in Hyattsville, 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 : 4139000 Subscriber Number To : 4139999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : OMNIPOINT COMM CAP 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 : Hyattsville Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 38.9500 Longitude : -76.9500 ‹ previous : +1-240-(4138000...4138999) next › : +1-240-(4140000...4149999) Dialling Instructions For trunk calls: 0 240 4139000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 240 4139000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 4139000 ~ 4139999 (Count: 1,000) Example: +1-240-4139000 / 0111-240-4139000 (1240-4139000 / 1-240-4139000) +1-240-4139001 / 0111-240-4139001 (1240-4139001 / 1-240-4139001) +1-240-4139002 / 0111-240-4139002 (1240-4139002 / 1-240-4139002) +1-240-4139003 / 0111-240-4139003 (1240-4139003 / 1-240-4139003) +1-240-4139004 / 0111-240-4139004 (1240-4139004 / 1-240-4139004) ...+1-240-xxxxxxx / 0111-240-xxxxxxx (1240-xxxxxxx / 1-240-xxxxxxx) ...+1-240-4139995 / 0111-240-4139995 (1240-4139995 / 1-240-4139995) +1-240-4139996 / 0111-240-4139996 (1240-4139996 / 1-240-4139996) +1-240-4139997 / 0111-240-4139997 (1240-4139997 / 1-240-4139997) +1-240-4139998 / 0111-240-4139998 (1240-4139998 / 1-240-4139998) +1-240-4139999 / 0111-240-4139999 (1240-4139999 / 1-240-4139999)