240 Area Code Lookup: Cities and Phone Numbers

Phone numbers in the 240 area code can be found in 60 cities or locations.

Those phone numbers can be found in the following cities or locations: Adamstown, Ashton, Baltimore, Beltsville, Bethesda, Brandywine, Cabin John, Callaway, Capitol Heights, Chevy Chase, Clarksville, Clinton, College Park, Columbia, Crofton, Cumberland, Damascus, Emmitsburg, Frederick, Frostburg, Gaithersburg, Glenn Dale, Grantsville, Greenbelt, Hagerstown, Hancock, Highfield, Hughesville, Hyattsville, Ijamsville, Indian Head, Kensington, La Plata, Laurel, Leonardtown, Lexington Park, Mccoole, Mechanicsville, Middletown, Mount Airy, Mount Rainier, Myersville, Nanjemoy, Newburg, Oakland, Odenton, Oxon Hill, Poolesville, Ridge, Rockville, Sandy Spring, Silver Spring, Smithsburg, Tall Timbers, Temple Hills, Thurmont, Upper Marlboro, Waldorf, Williamsport.

The carriers providing phone numbers in this area code are: 365 Wireless, AT&T Local, Allegiance Telecom, Atx Telecommunications Services, Ltd, Baltimore-washington Telephone (bwt), Bandwidth.com Clec, Broadvox-clec - DC, Broadwing Communications. LLC, Cavalier East LLC, Cavalier Telephone Mid-atlantic, Cellco Partnership DBA Verizon Wireless, Centurylink Communications LLC, Comcast Phone Of Northern Maryland, Core Communications, Dslnet Communications Va, Global Crossing Local Services-md, Global Naps South, Halo Wireless Services, Leap Wireless Intl DBA Cricket Comm, Level 3 Communications, Lightwave Communications, Local Access LLC, Lumos Networks Inc. - VA, Mci Worldcom Communications, Metro PCS, Mte DBA Mte Paging Network, New Cingular Wireless PCS - DC, Omnipoint Communications Cap Operations, Paetec Communications, Paetec Communications - DC, Peerless Network Of Maryland, Peerless Network Of The District Of Columbia,, Shentel Communications, Sprint Spectrum L.p., Starpower Communications, Telcove Operations, Teleport Communications America, Teleport Communications America - DC, Tw Telecom Of Maryland LLC, Us Lec Of Maryland, Uscoc Of Cumberland DBA United States Cel Md, Verizon Maryland, Xo Maryland, Ymax Communications Corp..