Prefixes |
City |
County |
Line Type |
Company |
240-205 |
Rockville |
Montgomery |
Cell Phone |
New Cingular Wireless Pcs,... |
240-206 |
Bowie |
Prince Georges |
Landline |
Xo Maryland, Llc |
240-207 |
Damascus |
Montgomery |
Landline |
Cavalier East Llc Md |
240-209 |
Columbia |
Howard |
Landline |
Global Naps South, Inc. Md |
240-210 |
Waldorf |
Charles |
Cell Phone |
New Cingular Wireless Pcs,... |
240-214 |
Gettysburg |
Adams |
Landline |
Global Naps South, Inc. Md |
240-215 |
Frederick |
Frederick |
Landline |
Telcove Operations, Inc. Md |
240-216 |
Waldorf |
Charles |
Cell Phone |
Nextel Communications, Inc. |
240-217 |
Hagerstown |
Washington |
Cell Phone |
Omnipoint Communications Ca... |
240-221 |
Rockville |
Montgomery |
Landline |
Verizon Maryland, Inc. |
240-222 |
Waldorf |
Charles |
Landline |
Cavalier Telephone Midatla... |
240-223 |
Bethesda |
Montgomery |
Landline |
Allegiance Telecom, Inc. Md |
240-228 |
Laurel |
Howard |
Landline |
Verizon Maryland, Inc. |
240-229 |
Waldorf |
Charles |
Landline |
Broadwing Communications. L... |
240-230 |
La Plata |
Charles |
Landline |
Global Crossing Local Servi... |
240-232 |
Bowie |
Prince Georges |
Landline |
Broadwing Communications. L... |
240-233 |
Newburg |
Charles |
Landline |
Teleport Communications Gro... |
240-235 |
Chevy Chase |
Montgomery |
Landline |
Paetec Communications, Inc.... |
240-236 |
Frederick |
Frederick |
Landline |
Verizon Maryland, Inc. |
240-237 |
Lexington Park |
Saint Marys |
Landline |
Teleport Communications Gro... |
240-238 |
Rockville |
Montgomery |
Landline |
Paetec Communications, Inc.... |
240-241 |
Beltsville |
Prince Georges |
Landline |
Starpower Communications, L... |
240-242 |
Silver Spring |
Montgomery |
Landline |
Starpower Communications, L... |
240-243 |
Gaithersburg |
Montgomery |
Landline |
Allegiance Telecom, Inc. Md |
240-244 |
Clinton |
Prince Georges |
Landline |
Starpower Communications, L... |
240-245 |
Bowie |
Prince Georges |
Landline |
Starpower Communications, L... |
240-246 |
Gaithersburg |
Montgomery |
Landline |
Starpower Communications, L... |
240-247 |
Silver Spring |
Montgomery |
Landline |
Allegiance Telecom, Inc. Md |
240-248 |
Washington |
District Of Columbia |
Landline |
Global Naps South, Inc. Md |
240-249 |
Mechanicsville |
Saint Marys |
Landline |
Teleport Communications Gro... |
240-250 |
Gaithersburg |
Montgomery |
Landline |
Global Naps South, Inc. Md |
240-252 |
Germantown |
Montgomery |
Landline |
Level 3 Communications, Llc... |
240-253 |
Oxon Hill |
Prince Georges |
Landline |
Global Crossing Local Servi... |
240-254 |
Hughesville |
Charles |
Landline |
Teleport Communications Gro... |
240-256 |
Fairfax |
Fairfax |
Landline |
Teleport Communications Gro... |
240-258 |
Saint Inigoes |
Saint Marys |
Landline |
Teleport Communications Gro... |
240-260 |
Hyattsville |
Prince Georges |
Landline |
Allegiance Telecom, Inc. Md |
240-263 |
Upper Marlboro |
Prince Georges |
Landline |
Tidalwave Telephone Inc. |
240-264 |
Laurel |
Prince Georges |
Landline |
Verizon Maryland, Inc. |
240-265 |
Laurel |
Prince Georges |
Landline |
Tidalwave Telephone Inc. |
240-268 |
Rockville |
Montgomery |
Landline |
Allegiance Telecom, Inc. Md |
240-271 |
Silver Spring |
Montgomery |
Cell Phone |
New Cingular Wireless Pcs,... |
240-273 |
Fort Washington |
Prince Georges |
Landline |
Broadwing Communications. L... |
240-274 |
Oxon Hill |
Prince Georges |
Cell Phone |
New Cingular Wireless Pcs,... |
240-276 |
Rockville |
Montgomery |
Landline |
Verizon Maryland, Inc. |
240-277 |
Silver Spring |
Montgomery |
Cell Phone |
Sprint Spectrum L.p. |
240-280 |
Laurel |
Prince Georges |
Landline |
Comcast Phone Of Northern M... |
240-281 |
Hyattsville |
Prince Georges |
Cell Phone |
New Cingular Wireless Pcs,... |
240-282 |
Middletown |
Frederick |
Landline |
Global Naps South, Inc. Md |
240-283 |
Rockville |
Montgomery |
Landline |
Paetec Communications, Inc.... |
240-284 |
Frostburg |
Allegany |
Landline |
Nationsline, Inc. Md |
240-285 |
Frederick |
Frederick |
Cell Phone |
Cellco Partnership Dba Veri... |
240-286 |
Washington |
District Of Columbia |
Cell Phone |
Nextel Communications, Inc. |
240-288 |
Thurmont |
Frederick |
Landline |
Nationsline, Inc. Md |
240-289 |
Oxon Hill |
Prince Georges |
Landline |
Cavalier Telephone Midatla... |
240-290 |
Rockville |
Montgomery |
Landline |
Allegiance Telecom, Inc. Md |
240-291 |
Hagerstown |
Washington |
Cell Phone |
New Cingular Wireless Pcs,... |
240-292 |
Silver Spring |
Montgomery |
Landline |
Verizon Maryland, Inc. |
240-293 |
Silver Spring |
Montgomery |
Landline |
Starpower Communications, L... |
240-294 |
Laurel |
Prince Georges |
Landline |
Xo Maryland, Llc |
240-295 |
Laurel |
Prince Georges |
Landline |
Cavalier Telephone Midatla... |
240-296 |
Hyattsville |
Prince Georges |
Landline |
Cavalier Telephone Midatla... |
240-297 |
Greenbelt |
Prince Georges |
Landline |
Level 3 Communications, Llc... |
240-298 |
Hollywood |
Saint Marys |
Cell Phone |
Cellco Partnership Dba Veri... |
240-299 |
Waldorf |
Charles |
Cell Phone |
Nextel Communications, Inc. |
240-303 |
Clinton |
Prince Georges |
Landline |
Cavalier Telephone Midatla... |
240-304 |
District Heights |
Prince Georges |
Cell Phone |
Nextel Communications, Inc. |
240-305 |
Silver Spring |
Montgomery |
Cell Phone |
Sprint Spectrum L.p. |
240-306 |
Rockville |
Montgomery |
Landline |
Allegiance Telecom, Inc. Md |
240-307 |
Emmitsburg |
Frederick |
Landline |
At&t Local |
240-308 |
Washington |
District Of Columbia |
Cell Phone |
New Cingular Wireless Pcs,... |
240-310 |
Hagerstown |
Washington |
Landline |
Uscoc Of Cumberland, Inc. D... |
240-312 |
Capitol Heights |
Prince Georges |
Landline |
Cavalier Telephone Midatla... |
240-313 |
Hagerstown |
Washington |
Landline |
Verizon Maryland, Inc. |
240-314 |
Rockville |
Montgomery |
Landline |
Verizon Maryland, Inc. |
240-315 |
Frederick |
Frederick |
Landline |
Verizon Maryland, Inc. |
240-317 |
Lexington Park |
Saint Marys |
Landline |
Starpower Communications, L... |
240-318 |
Clinton |
Prince Georges |
Landline |
Verizon Maryland, Inc. |
240-320 |
Washington |
District Of Columbia |
Landline |
Cavalier East Llc Md |
240-321 |
Swanton |
Garrett |
Landline |
Uscoc Of Cumberland, Inc. D... |
240-326 |
Upper Marlboro |
Prince Georges |
Landline |
Cavalier Telephone Midatla... |
240-328 |
Rockville |
Montgomery |
Landline |
Verizon Maryland, Inc. |
240-329 |
Hagerstown |
Washington |
Landline |
Level 3 Communications, Llc... |
240-330 |
Germantown |
Montgomery |
Cell Phone |
Sprint Spectrum L.p. |
240-332 |
Silver Spring |
Montgomery |
Landline |
Global Naps South, Inc. Md |
240-333 |
Bethesda |
Montgomery |
Landline |
Cavalier East Llc Md |
240-334 |
Bowie |
Prince Georges |
Landline |
Global Crossing Local Servi... |
240-335 |
Lanham |
Prince Georges |
Landline |
Cavalier Telephone Midatla... |
240-337 |
Newport Beach |
Orange |
Landline |
Global Naps South, Inc. Md |
240-338 |
Bowie |
Prince Georges |
Cell Phone |
Cellco Partnership Dba Veri... |
240-339 |
Upper Marlboro |
Prince Georges |
Landline |
Cavalier East Llc Md |
240-342 |
Olney |
Montgomery |
Landline |
Starpower Communications, L... |
240-344 |
Frederick |
Frederick |
Cell Phone |
New Cingular Wireless Pcs,... |
240-345 |
Highland |
Howard |
Landline |
Level 3 Communications, Llc... |
240-346 |
Waldorf |
Charles |
Cell Phone |
Sprint Spectrum L.p. |
240-348 |
Clinton |
Prince Georges |
Landline |
Level 3 Communications, Llc... |
240-349 |
La Plata |
Charles |
Landline |
Global Crossing Local Servi... |
240-350 |
Bowie |
Prince Georges |
Cell Phone |
Sprint Spectrum L.p. |
240-351 |
Silver Spring |
Montgomery |
Cell Phone |
Sprint Spectrum L.p. |
240-353 |
Silver Spring |
Montgomery |
Cell Phone |
Sprint Spectrum L.p. |
240-354 |
Upper Marlboro |
Prince Georges |
Cell Phone |
Sprint Spectrum L.p. |
240-355 |
Gaithersburg |
Montgomery |
Cell Phone |
Sprint Spectrum L.p. |
240-356 |
Myersville |
Frederick |
Landline |
Level 3 Communications, Llc... |
240-359 |
Gaithersburg |
Montgomery |
Landline |
Global Naps South, Inc. Md |
240-361 |
Gaithersburg |
Montgomery |
Landline |
Cavalier Telephone Midatla... |
240-362 |
Cumberland |
Allegany |
Landline |
Verizon Maryland, Inc. |
240-364 |
Gaithersburg |
Montgomery |
Landline |
Cavalier East Llc Md |
240-366 |
Williamsport |
Washington |
Landline |
At&t Local |
240-367 |
Frederick |
Frederick |
Cell Phone |
Nextel Communications, Inc. |
240-368 |
Darien |
Fairfield |
Landline |
Global Naps South, Inc. Md |
240-370 |
Washington |
District Of Columbia |
Cell Phone |
Sprint Spectrum L.p. |
240-371 |
Laurel |
Prince Georges |
Landline |
Global Naps South, Inc. Md |
240-372 |
Gaithersburg |
Montgomery |
Cell Phone |
Nextel Communications, Inc. |
240-373 |
Fort George G Meade |
Anne Arundel |
Landline |
Verizon Maryland, Inc. |
240-374 |
Laurel |
Prince Georges |
Landline |
Global Crossing Local Servi... |
240-375 |
Hyattsville |
Prince Georges |
Cell Phone |
Nextel Communications, Inc. |
240-377 |
Indian Head |
Charles |
Landline |
Global Crossing Local Servi... |
240-379 |
Frederick |
Frederick |
Landline |
Verizon Maryland, Inc. |
240-380 |
Bethesda |
Montgomery |
Cell Phone |
Cellco Partnership Dba Veri... |
240-381 |
Fort Washington |
Prince Georges |
Cell Phone |
New Cingular Wireless Pcs,... |
240-383 |
Bethesda |
Montgomery |
Cell Phone |
New Cingular Wireless Pcs,... |
240-384 |
Hollywood |
Saint Marys |
Landline |
Global Naps South, Inc. Md |
240-386 |
Gaithersburg |
Montgomery |
Landline |
Verizon Maryland, Inc. |
240-387 |
Beltsville |
Prince Georges |
Landline |
Cavalier East Llc Md |
240-388 |
Gaithersburg |
Montgomery |
Cell Phone |
Nextel Communications, Inc. |
240-389 |
Olney |
Montgomery |
Landline |
Atx Telecommunications Serv... |
240-390 |
Columbia |
Howard |
Landline |
Cavalier Telephone Midatla... |
240-391 |
Greenbelt |
Prince Georges |
Landline |
Global Crossing Local Servi... |
240-392 |
Suitland |
Prince Georges |
Landline |
Starpower Communications, L... |
240-393 |
Silver Spring |
Montgomery |
Cell Phone |
Cellco Partnership Dba Veri... |
240-394 |
Mount Airy |
Frederick |
Cell Phone |
New Cingular Wireless Pcs,... |
240-395 |
Bethesda |
Montgomery |
Landline |
Cavalier Telephone Midatla... |
240-396 |
Bethesda |
Montgomery |
Landline |
Global Crossing Local Servi... |
240-398 |
Hyattsville |
Prince Georges |
Cell Phone |
Nextel Communications, Inc. |
240-399 |
Rockville |
Montgomery |
Landline |
Xo Maryland, Llc |
240-401 |
Gaithersburg |
Montgomery |
Cell Phone |
New Cingular Wireless Pcs,... |
240-403 |
Rockville |
Montgomery |
Landline |
Cavalier Telephone Midatla... |
240-404 |
Germantown |
Montgomery |
Landline |
Xo Maryland, Llc |
240-405 |
Frederick |
Frederick |
Landline |
Us Lec Of Maryland, Inc. |
240-407 |
Temple Hills |
Prince Georges |
Landline |
Global Crossing Local Servi... |
240-409 |
Frederick |
Frederick |
Cell Phone |
New Cingular Wireless Pcs,... |
240-412 |
Waldorf |
Charles |
Cell Phone |
Sprint Spectrum L.p. |
240-413 |
Washington |
District Of Columbia |
Cell Phone |
Omnipoint Communications Ca... |
240-416 |
Waldorf |
Charles |
Cell Phone |
New Cingular Wireless Pcs,... |
240-417 |
Silver Spring |
Montgomery |
Cell Phone |
Nextel Communications, Inc. |
240-418 |
Rockville |
Montgomery |
Cell Phone |
Sprint Spectrum L.p. |
240-419 |
Waldorf |
Charles |
Cell Phone |
Cellco Partnership Dba Veri... |
240-420 |
Hagerstown |
Washington |
Landline |
Verizon Maryland, Inc. |
240-421 |
Silver Spring |
Montgomery |
Cell Phone |
Omnipoint Communications Ca... |
240-422 |
Frederick |
Frederick |
Cell Phone |
Omnipoint Communications Ca... |
240-423 |
Rockville |
Montgomery |
Cell Phone |
Omnipoint Communications Ca... |
240-424 |
Washington |
District Of Columbia |
Cell Phone |
Sprint Spectrum L.p. |
240-425 |
Rockville |
Montgomery |
Landline |
Dslnet Communications Va, I... |
240-426 |
Silver Spring |
Montgomery |
Cell Phone |
Sprint Spectrum L.p. |
240-427 |
Waldorf |
Charles |
Landline |
Xo Maryland, Llc |
240-429 |
Upper Marlboro |
Prince Georges |
Cell Phone |
Cellco Partnership Dba Veri... |
240-430 |
Silver Spring |
Montgomery |
Landline |
Cavalier Telephone Midatla... |
240-431 |
Westminster |
Orange |
Cell Phone |
Sprint Spectrum L.p. |
240-432 |
Silver Spring |
Montgomery |
Cell Phone |
Sprint Spectrum L.p. |
240-433 |
Silver Spring |
Montgomery |
Landline |
Cavalier Telephone Midatla... |
240-434 |
California |
Saint Marys |
Landline |
Broadwing Communications. L... |
240-436 |
Frederick |
Frederick |
Landline |
Telcove Operations, Inc. Md |
240-441 |
Bowie |
Prince Georges |
Cell Phone |
Omnipoint Communications Ca... |
240-442 |
Oakland |
Garrett |
Landline |
Verizon Maryland, Inc. |
240-446 |
Frederick |
Frederick |
Cell Phone |
Cellco Partnership Dba Veri... |
240-447 |
Rockville |
Montgomery |
Cell Phone |
New Cingular Wireless Pcs,... |
240-449 |
Gaithersburg |
Montgomery |
Cell Phone |
New Cingular Wireless Pcs,... |
240-450 |
Silver Spring |
Montgomery |
Landline |
Cavalier Telephone Midatla... |
240-453 |
Rockville |
Montgomery |
Landline |
Verizon Maryland, Inc. |
240-454 |
Gaithersburg |
Montgomery |
Landline |
Paetec Communications, Inc.... |
240-455 |
Suitland |
Prince Georges |
Landline |
Paetec Communications, Inc.... |
240-456 |
Laurel |
Prince Georges |
Landline |
Verizon Maryland, Inc. |
240-460 |
Bowie |
Prince Georges |
Cell Phone |
New Cingular Wireless Pcs,... |
240-461 |
Silver Spring |
Montgomery |
Cell Phone |
New Cingular Wireless Pcs,... |
240-462 |
Silver Spring |
Montgomery |
Cell Phone |
Sprint Spectrum L.p. |
240-463 |
Upper Marlboro |
Prince Georges |
Cell Phone |
New Cingular Wireless Pcs,... |
240-464 |
Gaithersburg |
Montgomery |
Cell Phone |
Nextel Communications, Inc. |
240-465 |
Clarks Summit |
Lackawanna |
Landline |
Global Naps South, Inc. Md |
240-468 |
Fort Washington |
Prince Georges |
Cell Phone |
Sprint Spectrum L.p. |
240-469 |
Hagerstown |
Washington |
Cell Phone |
Sprint Spectrum L.p. Md |
240-471 |
Silver Spring |
Montgomery |
Landline |
Global Crossing Local Servi... |
240-472 |
Bowie |
Prince Georges |
Cell Phone |
New Cingular Wireless Pcs,... |
240-473 |
College Park |
Prince Georges |
Landline |
Cavalier Telephone Midatla... |
240-475 |
Silver Spring |
Montgomery |
Cell Phone |
New Cingular Wireless Pcs,... |
240-476 |
Silver Spring |
Montgomery |
Cell Phone |
Omnipoint Communications Ca... |
240-477 |
Gaithersburg |
Montgomery |
Landline |
Lightwave Communications, L... |
240-478 |
Washington |
District Of Columbia |
Cell Phone |
New Cingular Wireless Pcs,... |
240-481 |
Gaithersburg |
Montgomery |
Cell Phone |
Omnipoint Communications Ca... |
240-482 |
Bethesda |
Montgomery |
Landline |
Us Lec Of Maryland, Inc. |
240-483 |
Columbia |
Howard |
Landline |
Comcast Phone Of Northern M... |
240-485 |
Silver Spring |
Montgomery |
Landline |
Us Lec Of Maryland, Inc. |
240-486 |
Kensington |
Montgomery |
Cell Phone |
Omnipoint Communications Ca... |
240-487 |
Hyattsville |
Prince Georges |
Landline |
Us Lec Of Maryland, Inc. |
240-489 |
Poolesville |
Montgomery |
Landline |
Xo Maryland, Llc |
240-490 |
Frederick |
Frederick |
Cell Phone |
Omnipoint Communications Ca... |
240-491 |
Silver Spring |
Montgomery |
Landline |
Global Crossing Local Servi... |
240-492 |
Upper Marlboro |
Prince Georges |
Landline |
Us Lec Of Maryland, Inc. |
240-493 |
Oxon Hill |
Prince Georges |
Landline |
Us Lec Of Maryland, Inc. |
240-494 |
Silver Spring |
Montgomery |
Landline |
Cavalier East Llc Md |
240-497 |
Bethesda |
Montgomery |
Landline |
Verizon Maryland, Inc. |
240-498 |
Rockville |
Montgomery |
Cell Phone |
Sprint Spectrum L.p. |
240-499 |
Rockville |
Montgomery |
Landline |
Us Lec Of Maryland, Inc. |
240-501 |
Hyattsville |
Prince Georges |
Cell Phone |
Sprint Spectrum L.p. |
240-505 |
Bethesda |
Montgomery |
Cell Phone |
Omnipoint Communications Ca... |
240-506 |
Gaithersburg |
Montgomery |
Cell Phone |
New Cingular Wireless Pcs,... |
240-508 |
Upper Marlboro |
Prince Georges |
Cell Phone |
Nextel Communications, Inc. |
240-510 |
Upper Marlboro |
Prince Georges |
Landline |
Xo Maryland, Llc |
240-514 |
Rockville |
Montgomery |
Landline |
Us Lec Of Maryland, Inc. |
240-515 |
Capitol Heights |
Prince Georges |
Cell Phone |
New Cingular Wireless Pcs,... |
240-520 |
Rosedale |
Baltimore |
Cell Phone |
Sprint Spectrum L.p. Md |
240-522 |
Cumberland |
Allegany |
Cell Phone |
Sprint Spectrum L.p. |
240-523 |
La Plata |
Charles |
Landline |
Xo Maryland, Llc |
240-524 |
Clinton |
Prince Georges |
Landline |
Global Naps South, Inc. Md |
240-525 |
Wilmette |
Cook |
Landline |
Global Naps South, Inc. Md |
240-527 |
Hagerstown |
Washington |
Landline |
Verizon Maryland, Inc. |
240-529 |
Frederick |
Frederick |
Landline |
Verizon Maryland, Inc. |
240-533 |
Martinsburg |
Berkeley |
Landline |
Teleport Communications Gro... |
240-535 |
Silver Spring |
Montgomery |
Cell Phone |
New Cingular Wireless Pcs,... |
240-536 |
Fort Washington |
Prince Georges |
Landline |
Global Naps South, Inc. Md |
240-538 |
Lexington Park |
Saint Marys |
Landline |
Xo Maryland, Llc |
240-542 |
Greenbelt |
Prince Georges |
Landline |
Us Lec Of Maryland, Inc. |
240-543 |
Poolesville |
Montgomery |
Cell Phone |
Sprint Spectrum L.p. |
240-544 |
Bowie |
Prince Georges |
Landline |
Us Lec Of Maryland, Inc. |
240-545 |
Upper Marlboro |
Prince Georges |
Landline |
Us Lec Of Maryland, Inc. |
240-547 |
Laurel |
Prince Georges |
Landline |
Level 3 Communications, Llc... |
240-548 |
Washington |
District Of Columbia |
Landline |
Allegiance Telecom, Inc. Md |
240-553 |
Greenbelt |
Prince Georges |
Landline |
Allegiance Telecom, Inc. Md |
240-554 |
Annapolis Junction |
Howard |
Landline |
Allegiance Telecom, Inc. Md |
240-556 |
Bowie |
Prince Georges |
Landline |
Paetec Communications, Inc.... |
240-558 |
Silver Spring |
Montgomery |
Landline |
Cavalier Telephone Midatla... |
240-560 |
Silver Spring |
Montgomery |
Landline |
Xo Maryland, Llc |
240-565 |
Kensington |
Montgomery |
Cell Phone |
Omnipoint Communications Ca... |
240-566 |
Frederick |
Frederick |
Landline |
Verizon Maryland, Inc. |
240-567 |
Silver Spring |
Montgomery |
Landline |
Verizon Maryland, Inc. |
240-568 |
Laurel |
Prince Georges |
Landline |
Verizon Maryland, Inc. |
240-573 |
Upper Marlboro |
Prince Georges |
Landline |
Global Crossing Local Servi... |
240-575 |
Frederick |
Frederick |
Landline |
Level 3 Communications, Llc... |
240-577 |
La Plata |
Charles |
Cell Phone |
Cellco Partnership Dba Veri... |
240-580 |
Cumberland |
Allegany |
Cell Phone |
Nextel Communications, Inc. |
240-581 |
Laurel |
Prince Georges |
Landline |
Paetec Communications, Inc.... |
240-582 |
Hyattsville |
Prince Georges |
Landline |
Verizon Maryland, Inc. |
240-593 |
Bowie |
Prince Georges |
Cell Phone |
Omnipoint Communications Ca... |
240-595 |
Washington |
District Of Columbia |
Cell Phone |
Cellco Partnership Dba Veri... |
240-597 |
Rockville |
Montgomery |
Landline |
Global Naps South, Inc. Md |
240-599 |
Gaithersburg |
Montgomery |
Landline |
Broadwing Communications. L... |
240-601 |
Temple Hills |
Prince Georges |
Cell Phone |
Sprint Spectrum L.p. |
240-602 |
Silver Spring |
Montgomery |
Cell Phone |
Sprint Spectrum L.p. |
240-603 |
Silver Spring |
Montgomery |
Cell Phone |
Sprint Spectrum L.p. |
240-604 |
Silver Spring |
Montgomery |
Cell Phone |
Sprint Spectrum L.p. |
240-605 |
District Heights |
Prince Georges |
Cell Phone |
Sprint Spectrum L.p. |
240-606 |
Laurel |
Prince Georges |
Cell Phone |
Sprint Spectrum L.p. |
240-607 |
Waldorf |
Charles |
Landline |
Global Crossing Local Servi... |
240-616 |
Greenbelt |
Prince Georges |
Landline |
Mci Worldcom Communications... |
240-619 |
Suitland |
Prince Georges |
Landline |
Mci Worldcom Communications... |
240-620 |
Laurel |
Howard |
Landline |
Mci Worldcom Communications... |
240-623 |
Gaithersburg |
Montgomery |
Landline |
Unknown |
240-625 |
Hagerstown |
Washington |
Cell Phone |
Nextel Communications, Inc. |
240-626 |
Frederick |
Frederick |
Cell Phone |
Sprint Spectrum L.p. |
240-627 |
Rockville |
Montgomery |
Landline |
Global Crossing Local Servi... |
240-629 |
Frederick |
Frederick |
Landline |
Verizon Maryland, Inc. |
240-631 |
Gaithersburg |
Montgomery |
Landline |
Verizon Maryland, Inc. |
240-632 |
Gaithersburg |
Montgomery |
Landline |
Verizon Maryland, Inc. |
240-638 |
Silver Spring |
Montgomery |
Landline |
Broadwing Communications. L... |
240-643 |
Bowie |
Prince Georges |
Cell Phone |
Omnipoint Communications Ca... |
240-644 |
Bethesda |
Montgomery |
Landline |
Xo Maryland, Llc |
240-645 |
Silver Spring |
Montgomery |
Landline |
Xo Maryland, Llc |
240-646 |
Laurel |
Prince Georges |
Landline |
Cavalier East Llc Md |
240-654 |
Gaithersburg |
Montgomery |
Cell Phone |
New Cingular Wireless Pcs,... |
240-662 |
Silver Spring |
Montgomery |
Landline |
Verizon Maryland, Inc. |
240-667 |
Hyattsville |
Prince Georges |
Landline |
Global Crossing Local Servi... |
240-668 |
Germantown |
Montgomery |
Landline |
Starpower Communications, L... |
240-669 |
Silver Spring |
Montgomery |
Landline |
Comcast Phone Of Northern M... |
240-671 |
Lanham |
Prince Georges |
Cell Phone |
Sprint Spectrum L.p. |
240-672 |
Rockville |
Montgomery |
Cell Phone |
Cellco Partnership Dba Veri... |
240-674 |
Frederick |
Frederick |
Cell Phone |
Nextel Communications, Inc. |
240-675 |
Sharpsburg |
Washington |
Cell Phone |
New Cingular Wireless Pcs,... |
240-676 |
Lanham |
Prince Georges |
Cell Phone |
Cellco Partnership Dba Veri... |
240-678 |
Silver Spring |
Montgomery |
Cell Phone |
Cellco Partnership Dba Veri... |
240-681 |
Brandywine |
Prince Georges |
Landline |
Atx Telecommunications Serv... |
240-682 |
Waldorf |
Charles |
Landline |
Starpower Communications, L... |
240-683 |
Gaithersburg |
Montgomery |
Landline |
Verizon Maryland, Inc. |
240-684 |
Greenbelt |
Prince Georges |
Landline |
Verizon Maryland, Inc. |
240-685 |
Lanham |
Prince Georges |
Landline |
Global Crossing Local Servi... |
240-686 |
Germantown |
Montgomery |
Landline |
Verizon Maryland, Inc. |
240-687 |
Upper Marlboro |
Prince Georges |
Cell Phone |
Cellco Partnership Dba Veri... |
240-688 |
Silver Spring |
Montgomery |
Cell Phone |
Cellco Partnership Dba Veri... |
240-691 |
Bowie |
Prince Georges |
Landline |
Global Crossing Local Servi... |
240-694 |
Bethesda |
Montgomery |
Landline |
Verizon Maryland, Inc. |
240-695 |
Suitland |
Prince Georges |
Landline |
Verizon Maryland, Inc. |
240-696 |
Hyattsville |
Prince Georges |
Landline |
Level 3 Communications, Llc... |
240-699 |
Frederick |
Frederick |
Landline |
Verizon Maryland, Inc. |
240-715 |
Rockville |
Montgomery |
Landline |
Global Crossing Local Servi... |
240-720 |
Gaithersburg |
Montgomery |
Landline |
Global Crossing Local Servi... |
240-722 |
Cumberland |
Allegany |
Landline |
Global Crossing Local Servi... |
240-723 |
Upper Marlboro |
Prince Georges |
Cell Phone |
Cellco Partnership Dba Veri... |
240-724 |
Cumberland |
Allegany |
Landline |
Cavalier East Llc Md |
240-725 |
Lexington Park |
Saint Marys |
Landline |
Verizon Maryland, Inc. |
240-727 |
Ridgeley |
Mineral |
Cell Phone |
New Cingular Wireless Pcs,... |
240-731 |
Gaithersburg |
Montgomery |
Cell Phone |
New Cingular Wireless Pcs,... |
240-733 |
Hagerstown |
Washington |
Landline |
Unknown |
240-737 |
Lanham |
Prince Georges |
Landline |
Cavalier East Llc Md |
240-743 |
Bethesda |
Montgomery |
Cell Phone |
New Cingular Wireless Pcs,... |
240-744 |
Bethesda |
Montgomery |
Landline |
Broadwing Communications. L... |
240-747 |
Rockville |
Montgomery |
Landline |
Cavalier East Llc Md |
240-750 |
Durham |
Durham |
Cell Phone |
New Cingular Wireless Pcs,... |
240-751 |
Gaithersburg |
Montgomery |
Landline |
Telcove Operations, Inc. Md |
240-752 |
Silver Spring |
Montgomery |
Landline |
Telcove Operations, Inc. Md |
240-753 |
Clinton |
Prince Georges |
Landline |
Telcove Operations, Inc. Md |
240-755 |
Clarksville |
Howard |
Landline |
Comcast Phone Of Northern M... |
240-764 |
Hyattsville |
Prince Georges |
Landline |
Xo Maryland, Llc |
240-765 |
Upper Marlboro |
Prince Georges |
Landline |
Xo Maryland, Llc |
240-766 |
Fort Washington |
Prince Georges |
Landline |
Xo Maryland, Llc |
240-770 |
Hyattsville |
Prince Georges |
Landline |
Comcast Phone Of Northern M... |
240-773 |
Rockville |
Montgomery |
Landline |
Verizon Maryland, Inc. |
240-776 |
La Plata |
Charles |
Landline |
Broadwing Communications. L... |
240-777 |
Rockville |
Montgomery |
Landline |
Verizon Maryland, Inc. |
240-778 |
Rockville |
Montgomery |
Landline |
Xo Maryland, Llc |
240-779 |
Olney |
Montgomery |
Landline |
Cavalier East Llc Md |
240-780 |
Gaithersburg |
Montgomery |
Landline |
Broadwing Communications. L... |
240-782 |
Laurel |
Prince Georges |
Landline |
Global Crossing Local Servi... |
240-783 |
Bethesda |
Montgomery |
Landline |
Mte, Inc. Dba Mte Paging Ne... |
240-784 |
Silver Spring |
Montgomery |
Cell Phone |
Omnipoint Communications Ca... |
240-786 |
Laurel |
Prince Georges |
Landline |
Broadwing Communications. L... |
240-787 |
Cheltenham |
Prince Georges |
Landline |
Broadwing Communications. L... |
240-788 |
Suitland |
Prince Georges |
Landline |
Broadwing Communications. L... |
240-790 |
Beltsville |
Prince Georges |
Landline |
Broadwing Communications. L... |
240-793 |
Frederick |
Frederick |
Cell Phone |
Nextel Communications, Inc. |
240-794 |
Great Mills |
Saint Marys |
Landline |
Broadwing Communications. L... |
240-812 |
Frederick |
Frederick |
Landline |
Global Crossing Local Servi... |
240-813 |
Gaithersburg |
Montgomery |
Landline |
Atx Telecommunications Serv... |
240-818 |
Smithsburg |
Washington |
Landline |
Verizon Maryland, Inc. |
240-821 |
Silver Spring |
Montgomery |
Landline |
Lightwave Communications, L... |
240-823 |
Upper Marlboro |
Prince Georges |
Landline |
Xo Maryland, Llc |
240-824 |
Silver Spring |
Montgomery |
Landline |
Unknown |
240-826 |
Rockville |
Montgomery |
Landline |
Verizon Maryland, Inc. |
240-832 |
Fort Washington |
Prince Georges |
Cell Phone |
Nextel Communications, Inc. |
240-833 |
Rockville |
Montgomery |
Landline |
Xo Maryland, Llc |
240-834 |
Washington |
District Of Columbia |
Landline |
Unknown |
240-838 |
Suitland |
Prince Georges |
Cell Phone |
Omnipoint Communications Ca... |
240-839 |
Silver Spring |
Montgomery |
Cell Phone |
Cellco Partnership Dba Veri... |
240-840 |
Rockville |
Montgomery |
Landline |
Unknown |
240-843 |
Greenbelt |
Prince Georges |
Landline |
Allegiance Telecom, Inc. Md |
240-845 |
Beltsville |
Prince Georges |
Landline |
Xo Maryland, Llc |
240-846 |
Gaithersburg |
Montgomery |
Landline |
Xo Maryland, Llc |
240-848 |
Gaithersburg |
Montgomery |
Cell Phone |
Nextel Communications, Inc. |
240-855 |
Gaithersburg |
Montgomery |
Cell Phone |
Sprint Spectrum L.p. |
240-857 |
Andrews Afb |
Prince Georges |
Landline |
Tw Telecom Of Maryland Llc... |
240-863 |
Silver Spring |
Montgomery |
Landline |
Tw Telecom Of Maryland Llc... |
240-864 |
Rockville |
Montgomery |
Landline |
Cavalier East Llc Md |
240-865 |
Crofton |
Anne Arundel |
Landline |
Level 3 Communications, Llc... |
240-868 |
Silver Spring |
Montgomery |
Landline |
Cavalier East Llc Md |
240-876 |
Rockville |
Montgomery |
Cell Phone |
Nextel Communications, Inc. |
240-880 |
Rockville |
Montgomery |
Landline |
Broadwing Communications. L... |
240-882 |
Upper Marlboro |
Prince Georges |
Cell Phone |
Nextel Communications, Inc. |
240-883 |
Olney |
Montgomery |
Landline |
Broadwing Communications. L... |
240-888 |
Kensington |
Montgomery |
Cell Phone |
New Cingular Wireless Pcs,... |
240-892 |
Upper Marlboro |
Prince Georges |
Landline |
Broadwing Communications. L... |
240-893 |
Silver Spring |
Montgomery |
Cell Phone |
New Cingular Wireless Pcs,... |
240-895 |
Lexington Park |
Saint Marys |
Landline |
Verizon Maryland, Inc. |
240-897 |
Clinton |
Prince Georges |
Landline |
Broadwing Communications. L... |
240-898 |
Hyattsville |
Prince Georges |
Landline |
Broadwing Communications. L... |
240-899 |
Washington |
District Of Columbia |
Cell Phone |
Omnipoint Communications Ca... |
240-912 |
Gaithersburg |
Montgomery |
Landline |
Us Lec Of Maryland, Inc. |
240-925 |
Mechanicsville |
Saint Marys |
Cell Phone |
Cellco Partnership Dba Veri... |
240-929 |
Bowie |
Prince Georges |
Landline |
Cavalier East Llc Md |
240-938 |
Columbia |
Howard |
Cell Phone |
Omnipoint Communications Ca... |
240-949 |
Reston |
Fairfax |
Landline |
Cavalier East Llc Md |
240-965 |
Greenbelt |
Prince Georges |
Landline |
Paetec Communications, Inc.... |
240-979 |
Cumberland |
Allegany |
Landline |
Level 3 Communications, Llc... |
240-986 |
Catonsville |
Baltimore |
Landline |
Xo Maryland, Llc |
240-988 |
Bowie |
Prince Georges |
Cell Phone |
Sprint Spectrum L.p. |
240-993 |
Newport News |
Newport News City |
Landline |
Xo Maryland, Llc |
240-994 |
Gaithersburg |
Montgomery |
Cell Phone |
Cellco Partnership Dba Veri... |
240-997 |
Bowie |
Prince Georges |
Cell Phone |
Cellco Partnership Dba Veri... |
240-998 |
Capitol Heights |
Prince Georges |
Landline |
Unknown |