Active Prefixes in Area Code 240

Prefix Location Company
240-203 Hagerstown, MD Sprint Spectrum L.p.
240-204 Bethesda, MD Cellco Partnership DBA Verizon Wireless
240-205 Cabin John, MD New Cingular Wireless PCS - DC
240-207 Damascus, MD Cavalier East LLC
240-208 La Plata, MD Peerless Network Of The District Of Columbia, Dc
240-209 Indian Head, MD Peerless Network Of The District Of Columbia, Dc
240-210 Waldorf, MD New Cingular Wireless PCS - DC
240-212 Oakland, MD Core Communications
240-213 Waldorf, MD Peerless Network Of The District Of Columbia, Dc
240-215 Frederick, MD Telcove Operations
240-216 Waldorf, MD Sprint Spectrum L.p.
240-217 Hagerstown, MD Omnipoint Communications Cap Operations
240-218 Nanjemoy, MD Peerless Network Of The District Of Columbia, Dc
240-219 Newburg Global Naps South, Inc. - Md
240-220 Poolesville, MD Peerless Network Of Maryland
240-221 Rockville, MD Verizon Maryland
240-222 Waldorf, MD Cavalier Telephone Mid-atlantic
240-225 Frederick, MD Core Communications
240-229 Waldorf, MD Broadwing Communications. LLC
240-230 Hughesville, MD Global Crossing Local Services-md
240-231 Hagerstown, MD Core Communications
240-233 Newburg, MD Teleport Communications America - DC
240-234 Mount Rainier, MD Cellco Partnership DBA Verizon Wireless
240-235 Bethesda, MD Paetec Communications
240-236 Frederick, MD Verizon Maryland
240-238 Rockville, MD Paetec Communications
240-242 Kensington, MD Starpower Communications
240-243 Gaithersburg, MD Allegiance Telecom
240-246 Gaithersburg, MD Starpower Communications
240-251 Highfield, MD Core Communications
240-252 Gaithersburg, MD Level 3 Communications
240-254 Hughesville, MD Teleport Communications America - DC
240-255 Poolesville, MD Peerless Network Of Maryland
240-257 Nanjemoy, MD Teleport Communications America - DC
240-261 Rockville Global Naps South, Inc. - Md
240-262 Callaway, MD Sprint Spectrum L.p.
240-263 Bethesda, MD Sprint Spectrum L.p.
240-271 Bethesda, MD New Cingular Wireless PCS - DC
240-274 Bethesda, MD New Cingular Wireless PCS - DC
240-275 Grantsville, MD Core Communications
240-276 Rockville, MD Verizon Maryland
240-277 Bethesda, MD Sprint Spectrum L.p.
240-279 Waldorf, MD Core Communications
240-280 Laurel, MD Comcast Phone Of Northern Maryland
240-281 Bethesda, MD New Cingular Wireless PCS - DC
240-283 Kensington, MD Paetec Communications
240-284 Frostburg, MD Level 3 Communications
240-285 Frederick, MD Cellco Partnership DBA Verizon Wireless
240-286 Bethesda, MD Sprint Spectrum L.p.
240-287 Hancock, MD Core Communications
240-288 Thurmont, MD Comcast Phone Of Northern Maryland
240-291 Hagerstown, MD New Cingular Wireless PCS - DC
240-292 Kensington, MD Verizon Maryland
240-293 Mount Rainier, MD Starpower Communications
240-299 Waldorf, MD Sprint Spectrum L.p.
240-306 Gaithersburg, MD Allegiance Telecom
240-307 Emmitsburg, MD AT&T Local
240-308 Damascus, MD New Cingular Wireless PCS - DC
240-310 Hagerstown, MD Uscoc Of Cumberland DBA United States Cel Md
240-313 Hagerstown, MD Verizon Maryland
240-314 Rockville, MD Verizon Maryland
240-315 Frederick, MD Verizon Maryland
240-319 Columbia, MD Cellco Partnership DBA Verizon Wireless
240-320 Waldorf, MD Cavalier East LLC
240-321 Oakland, MD Uscoc Of Cumberland DBA United States Cel Md
240-322 Mccoole, MD Core Communications
240-323 Emmitsburg, MD Core Communications
240-324 Clarksville, MD Ymax Communications Corp.
240-325 Damascus, MD Core Communications
240-327 Gaithersburg, MD Core Communications
240-328 Rockville, MD Verizon Maryland
240-329 Hagerstown, MD Level 3 Communications
240-331 Mount Rainier, MD Peerless Network Of Maryland
240-332 Newburg, MD Peerless Network Of Maryland
240-333 Mount Rainier, MD Cavalier East LLC
240-336 Bethesda, MD Core Communications
240-338 Silver Spring, MD Cellco Partnership DBA Verizon Wireless
240-341 Adamstown, MD Mci Worldcom Communications
240-342 Sandy Spring, MD Starpower Communications
240-343 Hancock, MD Cellco Partnership DBA Verizon Wireless
240-344 Frederick, MD New Cingular Wireless PCS - DC
240-346 Waldorf, MD Sprint Spectrum L.p.
240-347 Hagerstown, MD Bandwidth.com Clec
240-349 La Plata, MD Global Crossing Local Services-md
240-352 La Plata, MD Peerless Network Of Maryland
240-356 Frederick, MD Level 3 Communications
240-357 Frederick, MD Cellco Partnership DBA Verizon Wireless
240-358 Damascus, MD Peerless Network Of Maryland
240-359 Indian Head, MD Peerless Network Of Maryland
240-361 Gaithersburg, MD Cavalier Telephone Mid-atlantic
240-362 Cumberland, MD Verizon Maryland
240-363 Kensington, MD Global Naps South
240-364 Gaithersburg, MD Cavalier East LLC
240-365 Damascus, MD Baltimore-washington Telephone (bwt)
240-366 Williamsport, MD AT&T Local
240-367 Frederick, MD Sprint Spectrum L.p.
240-368 Waldorf, MD Peerless Network Of Maryland
240-369 Mount Airy, MD Core Communications
240-371 Mount Rainier, MD Peerless Network Of Maryland
240-372 Gaithersburg, MD Sprint Spectrum L.p.
240-373 Odenton, MD Verizon Maryland
240-376 Hughesville, MD Peerless Network Of Maryland
240-377 Indian Head, MD Global Crossing Local Services-md
240-378 Cumberland, MD Core Communications
240-379 Frederick, MD Verizon Maryland
240-380 Cabin John, MD Cellco Partnership DBA Verizon Wireless
240-381 Silver Spring, MD New Cingular Wireless PCS - DC
240-382 Hagerstown, MD Teleport Communications America
240-383 Chevy Chase, MD New Cingular Wireless PCS - DC
240-385 Myersville, MD Verizon Maryland
240-386 Gaithersburg, MD Verizon Maryland
240-388 Gaithersburg, MD Sprint Spectrum L.p.
240-389 Sandy Spring, MD Atx Telecommunications Services, Ltd
240-390 Sandy Spring, MD Cavalier Telephone Mid-atlantic
240-393 Cabin John, MD Cellco Partnership DBA Verizon Wireless
240-394 Mount Airy, MD New Cingular Wireless PCS - DC
240-395 Bethesda, MD Cavalier Telephone Mid-atlantic
240-396 Mount Rainier, MD Global Crossing Local Services-md
240-397 Frederick, MD Cellco Partnership DBA Verizon Wireless
240-398 Cabin John, MD Sprint Spectrum L.p.
240-399 Chevy Chase, MD Xo Maryland
240-400 Bethesda, MD Sprint Spectrum L.p.
240-401 Rockville, MD New Cingular Wireless PCS - DC
240-403 Rockville, MD Cavalier Telephone Mid-atlantic
240-404 Gaithersburg, MD Xo Maryland
240-405 Frederick, MD Us Lec Of Maryland
240-409 Frederick, MD New Cingular Wireless PCS - DC
240-412 Waldorf, MD Sprint Spectrum L.p.
240-415 Frederick, MD Ymax Communications Corp.
240-416 Waldorf, MD New Cingular Wireless PCS - DC
240-420 Hagerstown, MD Verizon Maryland
240-421 Rockville, MD Omnipoint Communications Cap Operations
240-422 Frederick, MD Omnipoint Communications Cap Operations
240-423 Silver Spring, MD Omnipoint Communications Cap Operations
240-425 Cabin John, MD Dslnet Communications Va
240-426 Bethesda, MD Sprint Spectrum L.p.
240-427 Waldorf, MD Xo Maryland
240-430 Kensington, MD Cavalier Telephone Mid-atlantic
240-433 Silver Spring, MD Cavalier Telephone Mid-atlantic
240-436 Ijamsville, MD Telcove Operations
240-437 Sandy Spring, MD Xo Maryland
240-439 Frederick, MD Cellco Partnership DBA Verizon Wireless
240-440 Frederick, MD Leap Wireless Intl DBA Cricket Comm
240-442 Oakland, MD Verizon Maryland
240-446 Frederick, MD Cellco Partnership DBA Verizon Wireless
240-447 Rockville, MD New Cingular Wireless PCS - DC
240-449 Gaithersburg, MD New Cingular Wireless PCS - DC
240-450 Silver Spring, MD Cavalier Telephone Mid-atlantic
240-451 HAGERSTOWN MCI Worldcom Communications Inc - MD
240-452 Hagerstown, MD Lumos Networks Inc. - VA
240-453 Rockville, MD Verizon Maryland
240-454 Gaithersburg, MD Paetec Communications
240-457 Frederick, MD Cellco Partnership DBA Verizon Wireless
240-459 Laurel, MD Cellco Partnership DBA Verizon Wireless
240-460 Silver Spring, MD New Cingular Wireless PCS - DC
240-461 Silver Spring, MD New Cingular Wireless PCS - DC
240-463 Silver Spring, MD New Cingular Wireless PCS - DC
240-464 Chevy Chase, MD Sprint Spectrum L.p.
240-465 Mount Rainier, MD Peerless Network Of Maryland
240-469 Hagerstown, MD Sprint Spectrum L.p.
240-471 Silver Spring, MD Global Crossing Local Services-md
240-472 Silver Spring, MD New Cingular Wireless PCS - DC
240-475 Silver Spring, MD New Cingular Wireless PCS - DC
240-476 Silver Spring, MD Omnipoint Communications Cap Operations
240-477 Gaithersburg, MD Lightwave Communications
240-478 Cabin John, MD New Cingular Wireless PCS - DC
240-481 Silver Spring, MD Omnipoint Communications Cap Operations
240-482 Cabin John, MD Us Lec Of Maryland
240-483 Oxon Hill, MD Comcast Phone Of Northern Maryland
240-485 Cabin John, MD Us Lec Of Maryland
240-488 Oakland, MD Shentel Communications
240-489 Poolesville, MD Xo Maryland
240-490 Middletown, MD Omnipoint Communications Cap Operations
240-491 Mount Rainier, MD Global Crossing Local Services-md
240-494 Mount Rainier, MD Cavalier East LLC
240-497 Chevy Chase, MD Verizon Maryland
240-499 Cabin John, MD Us Lec Of Maryland
240-500 Hagerstown, MD Us Lec Of Maryland
240-501 Silver Spring, MD Sprint Spectrum L.p.
240-505 Silver Spring, MD Omnipoint Communications Cap Operations
240-506 Rockville, MD New Cingular Wireless PCS - DC
240-509 Crofton, MD Bandwidth.com Clec
240-513 Hagerstown, MD Sprint Spectrum L.p.
240-514 Cabin John, MD Us Lec Of Maryland
240-515 Bethesda, MD New Cingular Wireless PCS - DC
240-516 Silver Spring, MD Us Lec Of Maryland
240-517 BALTIMORE Cellco Partnership dba Verizon Wireless - MD
240-520 Hagerstown, MD Sprint Spectrum L.p.
240-522 Cumberland, MD Sprint Spectrum L.p.
240-523 La Plata, MD Xo Maryland
240-527 Hagerstown, MD Verizon Maryland
240-528 Hughesville, MD Broadwing Communications. LLC
240-529 Frederick, MD Verizon Maryland
240-535 Silver Spring, MD New Cingular Wireless PCS - DC
240-536 Sandy Spring, MD Peerless Network Of Maryland
240-537 Maryland
240-540 BALTIMORE Wide Voice LLC - MD
240-549 HAGERSTOWN Cellco Partnership dba Verizon Wireless - MD
240-555 Baltimore Verizon Maryland, Inc.
240-558 Kensington, MD Cavalier Telephone Mid-atlantic
240-559 Sandy Spring, MD Allegiance Telecom
240-560 Chevy Chase, MD Xo Maryland
240-564 BALTIMORE Cellco Partnership dba Verizon Wireless - MD
240-566 Frederick, MD Verizon Maryland
240-567 Rockville, MD Verizon Maryland
240-569 Maryland
240-570 BALTIMORE Wide Voice LLC - MD
240-572 Maryland
240-575 Frederick, MD Level 3 Communications
240-576 Maryland
240-578 Frederick, MD Cellco Partnership DBA Verizon Wireless
240-579 Maryland
240-580 Cumberland, MD Sprint Spectrum L.p.
240-584 Maryland
240-586 Frederick, MD Verizon Maryland
240-588 Maryland
240-589 Maryland
240-590 Maryland
240-591 Maryland
240-594 Maryland
240-596 Maryland
240-597 Gaithersburg, MD Peerless Network Of Maryland
240-598 Maryland
240-600 Mount Rainier, MD Sprint Spectrum L.p.
240-607 Waldorf, MD Global Crossing Local Services-md
240-608 Frederick, MD 365 Wireless
240-609 HAGERSTOWN MetroPCS Inc
240-610 Maryland
240-617 HAGERSTOWN Broadvox-CLEC LLC - MD
240-620 Rockville, MD Mci Worldcom Communications
240-621 Kensington, MD Mci Worldcom Communications
240-622 Maryland
240-625 Hagerstown, MD Sprint Spectrum L.p.
240-626 Frederick, MD Sprint Spectrum L.p.
240-627 Mount Rainier, MD Global Crossing Local Services-md
240-628 Maryland
240-629 Frederick, MD Verizon Maryland
240-630 Mount Rainier, MD Bandwidth.com Clec
240-631 Gaithersburg, MD Verizon Maryland
240-632 Gaithersburg, MD Verizon Maryland
240-634 Maryland
240-635 Maryland
240-637 Maryland
240-639 Maryland
240-641 Rockville Tidalwave Telephone Inc.
240-642 Rockville Tidalwave Telephone Inc.
240-643 Silver Spring, MD Omnipoint Communications Cap Operations
240-644 Chevy Chase, MD Xo Maryland
240-645 Chevy Chase, MD Xo Maryland
240-647 Maryland
240-648 Maryland
240-649 Maryland
240-651 Frederick, MD Halo Wireless Services
240-653 Maryland
240-655 Maryland
240-656 Maryland
240-657 HAGERSTOWN Broadvox-CLEC LLC - MD
240-658 Maryland
240-659 Maryland
240-662 Silver Spring, MD Verizon Maryland
240-663 Maryland
240-668 Damascus, MD Starpower Communications
240-669 Kensington, MD Comcast Phone Of Northern Maryland
240-671 Mount Rainier, MD Sprint Spectrum L.p.
240-672 Rockville, MD Cellco Partnership DBA Verizon Wireless
240-674 Frederick, MD Sprint Spectrum L.p.
240-675 Myersville, MD New Cingular Wireless PCS - DC
240-676 Silver Spring, MD Cellco Partnership DBA Verizon Wireless
240-678 Silver Spring, MD Cellco Partnership DBA Verizon Wireless
240-679 Maryland
240-680 Maryland
240-682 Waldorf, MD Starpower Communications
240-683 Gaithersburg, MD Verizon Maryland
240-686 Gaithersburg, MD Verizon Maryland
240-687 Silver Spring, MD Cellco Partnership DBA Verizon Wireless
240-694 Rockville, MD Verizon Maryland
240-699 Adamstown, MD Verizon Maryland
240-707 Hagerstown, MD New Cingular Wireless PCS - DC
240-708 Columbia, MD Level 3 Communications
240-712 Columbia, MD Cellco Partnership DBA Verizon Wireless
240-715 Rockville, MD Global Crossing Local Services-md
240-720 Gaithersburg, MD Global Crossing Local Services-md
240-722 Sandy Spring, MD Global Crossing Local Services-md
240-723 Silver Spring, MD Cellco Partnership DBA Verizon Wireless
240-727 Cumberland, MD New Cingular Wireless PCS - DC
240-731 Rockville, MD New Cingular Wireless PCS - DC
240-732 HAGERSTOWN Broadvox-CLEC LLC - MD
240-734 Hagerstown, MD Bandwidth.com Clec
240-745 Damascus, MD Xo Maryland
240-747 Mount Rainier, MD Cavalier East LLC
240-750 Gaithersburg, MD New Cingular Wireless PCS - DC
240-751 Gaithersburg, MD Telcove Operations
240-752 Bethesda, MD Telcove Operations
240-753 Rockville, MD Telcove Operations
240-763 BALTIMORE Broadvox-CLEC LLC - MD
240-772 Frederick, MD Cellco Partnership DBA Verizon Wireless
240-773 Rockville, MD Verizon Maryland
240-774 HAGERSTOWN Broadvox-CLEC LLC - MD
240-775 HAGERSTOWN Broadvox-CLEC LLC - MD
240-776 La Plata, MD Broadwing Communications. LLC
240-777 Rockville, MD Verizon Maryland
240-778 Chevy Chase, MD Xo Maryland
240-779 Sandy Spring, MD Cavalier East LLC
240-780 Gaithersburg, MD Broadwing Communications. LLC
240-782 Damascus, MD Global Crossing Local Services-md
240-783 Bethesda, MD Mte DBA Mte Paging Network
240-784 Myersville, MD Omnipoint Communications Cap Operations
240-793 Gaithersburg, MD Sprint Spectrum L.p.
240-803 Cumberland, MD New Cingular Wireless PCS - DC
240-804 Newburg, MD Xo Maryland
240-812 Poolesville, MD Global Crossing Local Services-md
240-813 Gaithersburg, MD Atx Telecommunications Services, Ltd
240-815 HAGERSTOWN MetroPCS Inc
240-816 HAGERSTOWN MCI Worldcom Communications Inc - MD
240-818 Smithsburg, MD Verizon Maryland
240-821 Silver Spring, MD Lightwave Communications
240-826 Rockville, MD Verizon Maryland
240-831 HAGERSTOWN Broadvox-CLEC LLC - MD
240-832 Bethesda, MD Sprint Spectrum L.p.
240-833 Chevy Chase, MD Xo Maryland
240-835 Rockville Arbros Communications Licensing Com
240-837 Hughesville, MD Xo Maryland
240-840 Maryland
240-848 Gaithersburg, MD Sprint Spectrum L.p.
240-850 HAGERSTOWN Bandwidth.com CLEC LLC - MD
240-856 BALTIMORE Cellco Partnership dba Verizon Wireless - MD
240-859 BALTIMORE Broadvox-CLEC LLC - MD
240-862 HAGERSTOWN Broadvox-CLEC LLC - MD
240-864 Rockville, MD Cavalier East LLC
240-865 Baltimore, MD Level 3 Communications
240-868 Mount Rainier, MD Cavalier East LLC
240-870 HAGERSTOWN Comcast Phone of Northern Maryland Inc - MD
240-876 Bethesda, MD Sprint Spectrum L.p.
240-877 HAGERSTOWN Neutral Tandem-Maryland LLC - MD
240-878 HAGERSTOWN COMMIO LLC
240-883 Sandy Spring, MD Broadwing Communications. LLC
240-888 Rockville, MD New Cingular Wireless PCS - DC
240-893 Silver Spring, MD New Cingular Wireless PCS - DC
240-899 Bethesda, MD Omnipoint Communications Cap Operations
240-904 BALTIMORE Cellco Partnership dba Verizon Wireless - MD
240-908 HAGERSTOWN Broadvox-CLEC LLC - MD
240-912 Gaithersburg, MD Us Lec Of Maryland
240-913 HAGERSTOWN Broadvox-CLEC LLC - MD
240-915 HAGERSTOWN Comcast Phone of Northern Maryland Inc - MD
240-920 Cumberland, MD Level 3 Communications
240-938 Ashton, MD Omnipoint Communications Cap Operations
240-964 Cumberland, MD Verizon Maryland
240-971 HAGERSTOWN Qwest Communications Company LLC
240-972 BALTIMORE Broadvox-CLEC LLC - MD
240-979 Cumberland, MD Level 3 Communications
240-985 HAGERSTOWN Qwest Communications Company LLC
240-986 Nanjemoy, MD Xo Maryland
240-993 Indian Head, MD Xo Maryland
240-994 Rockville, MD Cellco Partnership DBA Verizon Wireless
240-996 HAGERSTOWN Qwest Communications Company LLC
240-997 Silver Spring, MD Cellco Partnership DBA Verizon Wireless
240-998 HAGERSTOWN Qwest Communications Company LLC