Area Code 240

Area code 240 serves parts of Maryland, including Cumberland, Frederick, Hagerstown, and Gaithersburg. It was created in 1997 as an overlay to area code 301.

Prefix City/State Phone Type Company
240-201 Ridge, MD Landline Peerless Network Of The District Of Columbia, Dc
240-203 Hagerstown, MD Cell Sprint Spectrum L.p.
240-207 Damascus, MD Landline Cavalier East LLC
240-208 La Plata, MD Landline Peerless Network Of The District Of Columbia, Dc
240-209 Indian Head, MD Landline Peerless Network Of The District Of Columbia, Dc
240-210 Waldorf, MD Cell New Cingular Wireless PCS - DC
240-212 Oakland, MD Landline Core Communications
240-213 Waldorf, MD Landline Peerless Network Of The District Of Columbia, Dc
240-214 Mechanicsville, MD Landline Peerless Network Of The District Of Columbia, Dc
240-215 Frederick, MD Landline Telcove Operations
240-216 Waldorf, MD Cell Sprint Spectrum L.p.
240-217 Hagerstown, MD Cell Omnipoint Communications Cap Operations
240-218 Nanjemoy, MD Landline Peerless Network Of The District Of Columbia, Dc
240-220 Poolesville, MD Landline Peerless Network Of Maryland
240-222 Waldorf, MD Landline Cavalier Telephone Mid-atlantic
240-224 Gaithersburg, MD Cell Cellco Partnership DBA Verizon Wireless
240-225 Frederick, MD Landline Core Communications
240-229 Waldorf, MD Landline Broadwing Communications. LLC
240-230 Hughesville, MD Landline Global Crossing Local Services-md
240-231 Hagerstown, MD Landline Core Communications
240-236 Frederick, MD Landline Verizon Maryland
240-239 Leonardtown, MD Landline Core Communications
240-243 Gaithersburg, MD Landline Allegiance Telecom
240-246 Gaithersburg, MD Landline Starpower Communications
240-248 Ridge, MD Landline Peerless Network Of Maryland
240-249 Mechanicsville, MD Landline Teleport Communications America - DC
240-250 Brandywine, MD Landline Peerless Network Of Maryland
240-252 Gaithersburg, MD Landline Level 3 Communications
240-254 Hughesville, MD Landline Teleport Communications America - DC
240-255 Poolesville, MD Landline Peerless Network Of Maryland
240-256 Leonardtown, MD Landline Teleport Communications America - DC
240-257 Nanjemoy, MD Landline Teleport Communications America - DC
240-258 Ridge, MD Landline Teleport Communications America - DC
240-264 Beltsville, MD Landline Verizon Maryland
240-270 Waldorf, MD Cell Cellco Partnership DBA Verizon Wireless
240-275 Grantsville, MD Landline Core Communications
240-278 Laurel, MD Cell Cellco Partnership DBA Verizon Wireless
240-279 Waldorf, MD Landline Core Communications
240-280 Laurel, MD Landline Comcast Phone Of Northern Maryland
240-282 Mechanicsville, MD Landline Peerless Network Of Maryland
240-284 Frostburg, MD Landline Level 3 Communications
240-285 Frederick, MD Landline Cellco Partnership DBA Verizon Wireless
240-287 Hancock, MD Landline Core Communications
240-288 Thurmont, MD Landline Comcast Phone Of Northern Maryland
240-291 Hagerstown, MD Cell New Cingular Wireless PCS - DC
240-294 Laurel, MD Landline Xo Maryland
240-295 Laurel, MD Landline Cavalier Telephone Mid-atlantic
240-298 Leonardtown, MD Cell Cellco Partnership DBA Verizon Wireless
240-299 Waldorf, MD Cell Sprint Spectrum L.p.
240-300 Waldorf, MD Cell Cellco Partnership DBA Verizon Wireless
240-306 Gaithersburg, MD Landline Allegiance Telecom
240-307 Emmitsburg, MD Landline AT&T Local
240-308 Damascus, MD Cell New Cingular Wireless PCS - DC
240-309 Leonardtown, MD Cell Cellco Partnership DBA Verizon Wireless
240-310 Hagerstown, MD Cell Uscoc Of Cumberland DBA United States Cel Md
240-313 Hagerstown, MD Landline Verizon Maryland
240-315 Frederick, MD Landline Verizon Maryland
240-319 Columbia, MD Cell Cellco Partnership DBA Verizon Wireless
240-320 Waldorf, MD Landline Cavalier East LLC
240-321 Oakland, MD Cell Uscoc Of Cumberland DBA United States Cel Md
240-323 Emmitsburg, MD Landline Core Communications
240-324 Clarksville, MD Landline Ymax Communications Corp.
240-325 Damascus, MD Landline Core Communications
240-327 Gaithersburg, MD Landline Core Communications
240-329 Hagerstown, MD Landline Level 3 Communications
240-341 Adamstown, MD Landline Mci Worldcom Communications
240-342 Sandy Spring, MD Landline Starpower Communications
240-343 Hancock, MD Cell Cellco Partnership DBA Verizon Wireless
240-344 Frederick, MD Cell New Cingular Wireless PCS - DC
240-345 Sandy Spring, MD Landline Level 3 Communications
240-346 Waldorf, MD Cell Sprint Spectrum L.p.
240-347 Hagerstown, MD Landline Bandwidth.com Clec
240-349 La Plata, MD Landline Global Crossing Local Services-md
240-352 La Plata, MD Landline Peerless Network Of Maryland
240-356 Frederick, MD Landline Level 3 Communications
240-357 Frederick, MD Cell Cellco Partnership DBA Verizon Wireless
240-358 Damascus, MD Landline Peerless Network Of Maryland
240-359 Indian Head, MD Landline Peerless Network Of Maryland
240-360 Silver Spring, MD Landline Unknown
240-361 Gaithersburg, MD Landline Cavalier Telephone Mid-atlantic
240-362 Cumberland, MD Landline Verizon Maryland
240-364 Gaithersburg, MD Landline Cavalier East LLC
240-365 Damascus, MD Landline Baltimore-washington Telephone (bwt)
240-366 Williamsport, MD Landline AT&T Local
240-367 Frederick, MD Cell Sprint Spectrum L.p.
240-368 Waldorf, MD Landline Peerless Network Of Maryland
240-369 Mount Airy, MD Landline Core Communications
240-372 Gaithersburg, MD Cell Sprint Spectrum L.p.
240-374 Laurel, MD Landline Global Crossing Local Services-md
240-376 Hughesville, MD Landline Peerless Network Of Maryland
240-377 Indian Head, MD Landline Global Crossing Local Services-md
240-378 Cumberland, MD Landline Core Communications
240-379 Frederick, MD Landline Verizon Maryland
240-382 Hagerstown, MD Landline Teleport Communications America
240-385 Myersville, MD Landline Verizon Maryland
240-388 Gaithersburg, MD Cell Sprint Spectrum L.p.
240-389 Sandy Spring, MD Landline Atx Telecommunications Services, Ltd
240-390 Sandy Spring, MD Landline Cavalier Telephone Mid-atlantic
240-394 Mount Airy, MD Cell New Cingular Wireless PCS - DC
240-397 Frederick, MD Cell Cellco Partnership DBA Verizon Wireless
240-404 Gaithersburg, MD Landline Xo Maryland
240-405 Frederick, MD Landline Us Lec Of Maryland
240-409 Frederick, MD Cell New Cingular Wireless PCS - DC
240-412 Waldorf, MD Cell Sprint Spectrum L.p.
240-415 Frederick, MD Landline Ymax Communications Corp.
240-416 Waldorf, MD Cell New Cingular Wireless PCS - DC
240-419 Waldorf, MD Cell Cellco Partnership DBA Verizon Wireless
240-420 Hagerstown, MD Landline Verizon Maryland
240-422 Frederick, MD Cell Omnipoint Communications Cap Operations
240-427 Waldorf, MD Landline Xo Maryland
240-434 Leonardtown, MD Landline Broadwing Communications. LLC
240-435 Waldorf, MD Cell Cellco Partnership DBA Verizon Wireless
240-436 Ijamsville, MD Landline Telcove Operations
240-437 Sandy Spring, MD Landline Xo Maryland
240-439 Frederick, MD Cell Cellco Partnership DBA Verizon Wireless
240-440 Frederick, MD Cell Leap Wireless Intl DBA Cricket Comm
240-442 Oakland, MD Landline Verizon Maryland
240-444 Laurel, MD Cell Cellco Partnership DBA Verizon Wireless
240-446 Frederick, MD Cell Cellco Partnership DBA Verizon Wireless
240-448 Waldorf, MD Cell Sprint Spectrum L.p.
240-449 Gaithersburg, MD Cell New Cingular Wireless PCS - DC
240-452 Hagerstown, MD Landline Lumos Networks Inc. - VA
240-454 Gaithersburg, MD Cell Paetec Communications
240-456 Laurel, MD Landline Verizon Maryland
240-457 Frederick, MD Cell Cellco Partnership DBA Verizon Wireless
240-458 Waldorf, MD Cell Cellco Partnership DBA Verizon Wireless
240-459 Laurel, MD Cell Cellco Partnership DBA Verizon Wireless
240-466 Mechanicsville, MD Cell New Cingular Wireless PCS - DC
240-469 Hagerstown, MD Cell Sprint Spectrum L.p.
240-470 Laurel, MD Cell Cellco Partnership DBA Verizon Wireless
240-477 Gaithersburg, MD Landline Lightwave Communications
240-488 Oakland, MD Landline Shentel Communications
240-489 Poolesville, MD Landline Xo Maryland
240-490 Middletown, MD Cell Omnipoint Communications Cap Operations
240-500 Hagerstown, MD Landline Us Lec Of Maryland
240-513 Hagerstown, MD Cell Sprint Spectrum L.p.
240-518 Waldorf, MD Cell Sprint Spectrum L.p.
240-520 Hagerstown, MD Cell Sprint Spectrum L.p.
240-522 Cumberland, MD Cell Sprint Spectrum L.p.
240-523 La Plata, MD Landline Xo Maryland
240-524 Laurel, MD Landline Peerless Network Of Maryland
240-526 Leonardtown, MD Landline Peerless Network Of Maryland
240-527 Hagerstown, MD Landline Verizon Maryland
240-528 Hughesville, MD Landline Broadwing Communications. LLC
240-529 Frederick, MD Landline Verizon Maryland
240-530 Silver Spring, MD Landline Unknown
240-536 Sandy Spring, MD Landline Peerless Network Of Maryland
240-538 Leonardtown, MD Landline Xo Maryland
240-547 Laurel, MD Landline Level 3 Communications
240-554 Laurel, MD Landline Allegiance Telecom
240-559 Sandy Spring, MD Landline Allegiance Telecom
240-561 Leonardtown, MD Cell Cellco Partnership DBA Verizon Wireless
240-565 Laurel, MD Cell Omnipoint Communications Cap Operations
240-566 Frederick, MD Landline Verizon Maryland
240-568 Laurel, MD Landline Verizon Maryland
240-575 Frederick, MD Landline Level 3 Communications
240-577 Leonardtown, MD Cell Cellco Partnership DBA Verizon Wireless
240-578 Frederick, MD Cell Cellco Partnership DBA Verizon Wireless
240-580 Cumberland, MD Cell Sprint Spectrum L.p.
240-581 Laurel, MD Landline Paetec Communications - DC
240-583 Beltsville, MD Landline Verizon Maryland
240-585 Waldorf, MD Cell Cellco Partnership DBA Verizon Wireless
240-586 Frederick, MD Landline Verizon Maryland
240-587 Leonardtown, MD Cell Cellco Partnership DBA Verizon Wireless
240-593 Laurel, MD Cell Omnipoint Communications Cap Operations
240-597 Gaithersburg, MD Landline Peerless Network Of Maryland
240-607 Waldorf, MD Landline Global Crossing Local Services-md
240-608 Frederick, MD Cell 365 Wireless
240-617 Silver Spring, MD Landline Unknown
240-625 Hagerstown, MD Cell Sprint Spectrum L.p.
240-626 Frederick, MD Cell Sprint Spectrum L.p.
240-629 Frederick, MD Landline Verizon Maryland
240-631 Gaithersburg, MD Landline Verizon Maryland
240-632 Gaithersburg, MD Landline Verizon Maryland
240-640 Waldorf, MD Cell Leap Wireless Intl DBA Cricket Comm
240-646 Laurel, MD Landline Cavalier East LLC
240-651 Frederick, MD Cell Halo Wireless Services
240-652 Mechanicsville, MD Landline Xo Maryland
240-654 Gaithersburg, MD Cell New Cingular Wireless PCS - DC
240-668 Damascus, MD Landline Starpower Communications
240-674 Frederick, MD Cell Sprint Spectrum L.p.
240-675 Myersville, MD Cell New Cingular Wireless PCS - DC
240-681 Washington Landlines Atx Telecommunications Services, Ltd
240-682 Waldorf, MD Landline Starpower Communications
240-683 Gaithersburg, MD Landline Verizon Maryland
240-685 Brandywine, MD Landline Global Crossing Local Services-md
240-686 Gaithersburg, MD Landline Verizon Maryland
240-699 Adamstown, MD Landline Verizon Maryland
240-707 Hagerstown, MD Cell New Cingular Wireless PCS - DC
240-708 Columbia, MD Cell Level 3 Communications
240-712 Columbia, MD Cell Cellco Partnership DBA Verizon Wireless
240-713 Laurel, MD Landline Peerless Network Of Maryland
240-720 Gaithersburg, MD Landline Global Crossing Local Services-md
240-722 Sandy Spring, MD Landline Global Crossing Local Services-md
240-727 Cumberland, MD Cell New Cingular Wireless PCS - DC
240-734 Hagerstown, MD Landline Bandwidth.com Clec
240-745 Damascus, MD Landline Xo Maryland
240-750 Gaithersburg, MD Cell New Cingular Wireless PCS - DC
240-751 Gaithersburg, MD Landline Telcove Operations
240-754 Waldorf, MD Landline Level 3 Communications
240-755 Laurel, MD Landline Comcast Phone Of Northern Maryland
240-772 Frederick, MD Cell Cellco Partnership DBA Verizon Wireless
240-776 La Plata, MD Landline Broadwing Communications. LLC
240-779 Sandy Spring, MD Landline Cavalier East LLC
240-780 Gaithersburg, MD Landline Broadwing Communications. LLC
240-782 Damascus, MD Landline Global Crossing Local Services-md
240-784 Myersville, MD Cell Omnipoint Communications Cap Operations
240-786 Laurel, MD Landline Broadwing Communications. LLC
240-787 Brandywine, MD Landline Broadwing Communications. LLC
240-793 Gaithersburg, MD Cell Sprint Spectrum L.p.
240-801 Silver Spring, MD Landline Unknown
240-803 Cumberland, MD Cell New Cingular Wireless PCS - DC
240-812 Poolesville, MD Landline Global Crossing Local Services-md
240-813 Gaithersburg, MD Landline Atx Telecommunications Services, Ltd
240-818 Smithsburg, MD Landline Verizon Maryland
240-823 Brandywine, MD Landline Xo Maryland
240-837 Hughesville, MD Landline Xo Maryland
240-841 Laurel, MD Landline Allegiance Telecom
240-844 Ridge, MD Landline Xo Maryland
240-848 Gaithersburg, MD Cell Sprint Spectrum L.p.
240-883 Sandy Spring, MD Landline Broadwing Communications. LLC
240-901 Silver Spring, MD Landline Unknown
240-903 Silver Spring, MD Landline Unknown
240-912 Gaithersburg, MD Landline Us Lec Of Maryland
240-920 Cumberland, MD Landline Level 3 Communications
240-925 Leonardtown, MD Cell Cellco Partnership DBA Verizon Wireless
240-938 Ashton, MD Cell Omnipoint Communications Cap Operations
240-964 Cumberland, MD Landline Verizon Maryland
240-976 Chevy Chase Landlines Baltimore-washington Telephone (bwt)
240-979 Cumberland, MD Landline Level 3 Communications
240-986 Nanjemoy, MD Landline Xo Maryland
240-993 Indian Head, MD Landline Xo Maryland