855-307-3155 716-936-2892 604-708-9173
855-699-7826 438-392-2870 866-233-1787
336-253-8895 604-553-4858 480-685-0778

Index

Area Code 443 - Maryland

Prefix 443-200 - WOODLAWN, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-201 - WESTMINSTR, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-202 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-203 - WEST RIVER, MD (VERIZON MARYLAND, INC.)
Prefix 443-204 - PIKESVILLE, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-205 - CAMBRIDGE, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-206 - PERRYVILLE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-207 - ELKTON, MD (OMNIPOINT COMMUNICATIONS ENTERPRISES, L.P.)
Prefix 443-208 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-209 - HAVREGRACE, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-210 - SALISBURY, MD (SPRINT SPECTRUM L.P.)
Prefix 443-212 - SPARKSGLNC, MD (US LEC OF MARYLAND, INC.)
Prefix 443-213 - PIKESVILLE, MD (VERIZON MARYLAND, INC.)
Prefix 443-214 - ANNAPOLIS, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-215 - CHESTERTN, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-216 - DUNDALK, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-217 - ANNAPOLIS, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-218 - WORTHINGTN, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-219 - PARKVILLE, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-220 - BALTIMORE, MD (VERIZON MARYLAND, INC.)
Prefix 443-221 - ANNAPOLIS, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-222 - WORTHINGTN, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-223 - ANNAPOLIS, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-224 - BALTIMORE, MD (MCI WORLDCOM COMMUNICATIONS, INC. - MD)
Prefix 443-225 - CAMBRIDGE, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-226 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-227 - PT DEPOSIT, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-228 - CHASE, MD (US LEC OF MARYLAND, INC.)
Prefix 443-229 - SEVERNA PK, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-230 - ODENTON, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-231 - ESSEX, MD (AT&T LOCAL)
Prefix 443-232 - WILLARDS, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-233 - VIENNA, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-234 - SNOW HILL, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-235 - SALISBURY, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-236 - CARDIFF, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-237 - NORTHBEACH, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-238 - PARKTON, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-239 - EASTON, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-240 - BALTIMORE, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-241 - WESTMINSTR, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-242 - SPARROWSPT, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-243 - FALLSTON, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-244 - WESTMINSTR, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-245 - ELKTON, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-246 - ELKTON, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-247 - UNION BDG, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-248 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-249 - STEVENSVL, MD (VERIZON MARYLAND, INC.)
Prefix 443-250 - BALTIMORE, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-251 - CHESTERTN, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-252 - PERRYVILLE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-253 - BALTIMORE, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-254 - ANNAPOLIS, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-255 - BALTIMORE, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-256 - NORTH EAST, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-257 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-258 - EASTON, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-259 - COLUMBIA, MD (VERIZON MARYLAND, INC.)
Prefix 443-260 - SALISBURY, MD (VERIZON MARYLAND, INC.)
Prefix 443-261 - SEVERNA PK, MD (MCI WORLDCOM COMMUNICATIONS, INC. - MD)
Prefix 443-262 - CENTREVL, MD (VERIZON MARYLAND, INC.)
Prefix 443-263 - BALTIMORE, MD (VERIZON MARYLAND, INC.)
Prefix 443-264 - PIKESVILLE, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-265 - FORK, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-266 - GLENWOOD, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-267 - DARLINGTON, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-268 - BALTIMORE, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-269 - TOWSON, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-270 - GLENBURNIE, MD (PAETEC COMMUNICATIONS, INC. - MD)
Prefix 443-271 - BALTIMORE, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-272 - RANDALLSTN, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-273 - REISTERSTN, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-274 - SEVERN, MD (VERIZON MARYLAND, INC.)
Prefix 443-275 - TOWSON, MD (COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD)
Prefix 443-276 - COLUMBIA, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-277 - SYKESVILLE, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-278 - BALTIMORE, MD (VDL, INC. DBA GLOBAL TELECOM BROKERS - MD)
Prefix 443-279 - TOWSON, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-280 - SYKESVILLE, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-281 - COCKEYSVL, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-282 - CHESTERTN, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-283 - COLUMBIA, MD (PAETEC COMMUNICATIONS, INC. - MD)
Prefix 443-284 - WATERLO238, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-285 - COLUMBIA, MD (VERIZON MARYLAND, INC.)
Prefix 443-286 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-287 - BALTIMORE, MD (VERIZON MARYLAND, INC.)
Prefix 443-288 - ELLICOTTCY, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-289 - WESTMINSTR, MD (MCI WORLDCOM COMMUNICATIONS, INC. - MD)
Prefix 443-290 - PARKVILLE, MD (TW TELECOM OF MARYLAND LLC - MD)
Prefix 443-291 - HAMPSTEAD, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-292 - CROFTON, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-293 - WESTMINSTR, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-294 - WEST RIVER, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-295 - PRINCEFRCK, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-296 - WATERLO238, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-297 - ARBUTUS, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-298 - EASTON, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-299 - FALLSTON, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-300 - SYKESVILLE, MD (BROADWING COMMUNICATIONS. LLC - MD)
Prefix 443-301 - BALTIMORE, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-302 - CROFTON, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-303 - ABERDEEN, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-304 - ARBUTUS, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-305 - ARGRGBSNIS, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-306 - SEVERNA PK, MD (SPRINT SPECTRUM L.P.)
Prefix 443-307 - BEL AIR, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-308 - SEVERN, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-309 - ELKTON, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-310 - BALTIMORE, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-312 - BRYNPKLNCM, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-313 - FORK, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-314 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-315 - CATONSVL, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-316 - WOODLAWN, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-317 - CHASE, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-318 - COCKEYSVL, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-319 - COLUMBIA, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-320 - BALTIMORE, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-321 - ANNAPOLIS, MD (PAETEC COMMUNICATIONS, INC. - MD)
Prefix 443-322 - TOWSON, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-323 - SHARPTOWN, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-324 - BALTIMORE, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-325 - ELLICOTTCY, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-326 - BALTIMORE, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-327 - ABERDEEN, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-328 - SYKESVILLE, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-329 - WATERLO236, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-330 - COCKEYSVL, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-331 - TANEYTOWN, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-332 - CROFTON, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-333 - ANNAPOLIS, MD (LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.)
Prefix 443-334 - PIKESVILLE, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-335 - BRYNPKLNCM, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-336 - ANNAPOLIS, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-337 - SPARROWSPT, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-338 - SPARKSGLNC, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-339 - SHERWD FOR, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-340 - WESTMINSTR, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-341 - CATONSVL, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-342 - SOLOMONS, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-343 - MILLERSVL, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-344 - SEVERNA PK, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-345 - ABERDEEN, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-346 - SEVERNA PK, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-347 - CARDIFF, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-348 - WOODLAWN, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-349 - SILVER RUN, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-350 - ELKTON, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-351 - ODENTON, MD (US LEC OF MARYLAND, INC.)
Prefix 443-352 - PIKESVILLE, MD (AT&T LOCAL)
Prefix 443-353 - COCKEYSVL, MD (VERIZON MARYLAND, INC.)
Prefix 443-354 - GLENBURNIE, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-355 - ELLICOTTCY, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-356 - BEL AIR, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-357 - PIKESVILLE, MD (VERIZON MARYLAND, INC.)
Prefix 443-358 - SALISBURY, MD (YMAX COMMUNICATIONS CORP. - MD)
Prefix 443-359 - DELMAR, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-360 - ABERDEEN, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-361 - SYKESVILLE, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-362 - EASTON, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-363 - SEVERN, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-364 - ELLICOTTCY, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-365 - SALISBURY, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-366 - SALISBURY, MD (SPRINT SPECTRUM L.P.)
Prefix 443-367 - COLUMBIA, MD (VERIZON MARYLAND, INC.)
Prefix 443-368 - WESTMINSTR, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-369 - BEL AIR, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-370 - ANNAPOLIS, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-371 - BEL AIR, MD (BROADWING COMMUNICATIONS. LLC - MD)
Prefix 443-372 - EDGEWOOD, MD (US LEC OF MARYLAND, INC.)
Prefix 443-373 - OCEAN CITY, MD (SPRINT SPECTRUM L.P.)
Prefix 443-374 - ABERDEEN, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-375 - HAMPSTEAD, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-376 - DUNDALK, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-377 - TOWSON, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-378 - BALTIMORE, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-379 - PIKESVILLE, MD (COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD)
Prefix 443-380 - WOODLAWN, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-381 - REISTERSTN, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-382 - CAMBRIDGE, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-383 - SILVER RUN, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-384 - PARKVILLE, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-385 - EASTON, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-386 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-387 - POCOMOKE, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-388 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-389 - SALISBURY, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-390 - CHURCHVL, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-391 - COCKEYSVL, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-392 - BALTIMORE, MD (AT&T LOCAL)
Prefix 443-393 - COLUMBIA, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-394 - PIKESVILLE, MD (VERIZON MARYLAND, INC.)
Prefix 443-395 - ABERDEEN, MD (VERIZON MARYLAND, INC.)
Prefix 443-396 - ODENTON, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-397 - SALISBURY, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-398 - SYKESVILLE, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-399 - DUNDALK, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-400 - BRYNPKLNCM, MD (XO MARYLAND, LLC)
Prefix 443-401 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-402 - EDGEWOOD, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-403 - ABERDEEN, MD (BROADWING COMMUNICATIONS. LLC - MD)
Prefix 443-404 - SOLOMONS, MD (SPRINT SPECTRUM L.P.)
Prefix 443-405 - RANDALLSTN, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-406 - ELKTON, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-407 - DUNDALK, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-408 - SPARROWSPT, MD (XO MARYLAND, LLC)
Prefix 443-409 - EDGEWOOD, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-410 - BALTIMORE, MD (LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.)
Prefix 443-412 - CHURCHVL, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-413 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-414 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-415 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-416 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-417 - FALLSTON, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-418 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-419 - GLENWOOD, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-420 - ELLICOTTCY, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-421 - FORK, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-422 - GLENBURNIE, MD (LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.)
Prefix 443-423 - BALTIMORE, MD (BROADWING COMMUNICATIONS. LLC - MD)
Prefix 443-424 - CARDIFF, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-425 - PARKVILLE, MD (AT&T LOCAL)
Prefix 443-426 - RANDALLSTN, MD (PAETEC COMMUNICATIONS, INC. - MD)
Prefix 443-427 - PRINCEANNE, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-428 - COCKEYSVL, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-429 - WOODLAWN, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-430 - COLUMBIA, MD (XO MARYLAND, LLC)
Prefix 443-431 - RANDALLSTN, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-432 - PRINCEFRCK, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-433 - ANNAPOLIS, MD (XO MARYLAND, LLC)
Prefix 443-434 - FEDERALSBG, MD (COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD)
Prefix 443-435 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-436 - WOODLAWN, MD (VERIZON MARYLAND, INC.)
Prefix 443-437 - POCOMOKE, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-438 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-439 - TRAPPE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-440 - ANNAPOLIS, MD (VERIZON MARYLAND, INC.)
Prefix 443-441 - GLENWOOD, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-442 - PARKVILLE, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-444 - BALTIMORE, MD (VERIZON MARYLAND, INC.)
Prefix 443-445 - ELKRIDGE, MD (VERIZON MARYLAND, INC.)
Prefix 443-446 - QUEENSTOWN, MD (MCI WORLDCOM COMMUNICATIONS, INC. - MD)
Prefix 443-447 - BALTIMORE, MD (LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.)
Prefix 443-448 - DENTON, MD (COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD)
Prefix 443-449 - BALTIMORE, MD (BROADVIEW NETWORKS, INC. - MD)
Prefix 443-450 - PIKESVILLE, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-451 - BALTIMORE, MD (PAETEC COMMUNICATIONS, INC. - MD)
Prefix 443-452 - BALTIMORE, MD (US LEC OF MARYLAND, INC.)
Prefix 443-453 - BALTIMORE, MD (NEUTRAL TANDEM-MARYLAND, LLC - MD)
Prefix 443-454 - ANNAPOLIS, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-455 - BALTIMORE, MD (VERIZON MARYLAND, INC.)
Prefix 443-456 - EDGEWOOD, MD (AT&T LOCAL)
Prefix 443-457 - BRYNPKLNCM, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-458 - ANNAPOLIS, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-459 - ELKRIDGE, MD (PAETEC COMMUNICATIONS, INC. - MD)
Prefix 443-460 - ESSEX, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-461 - PARKVILLE, MD (US LEC OF MARYLAND, INC.)
Prefix 443-462 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-463 - BALTIMORE, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-464 - CHURCHVL, MD (BROADVIEW NETWORKS, INC. - MD)
Prefix 443-465 - TOWSON, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-466 - ELKTON, MD (SPRINT SPECTRUM L.P.)
Prefix 443-467 - BALTIMORE, MD (LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.)
Prefix 443-468 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-469 - BALTIMORE, MD (LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.)
Prefix 443-470 - TOWSON, MD (US LEC OF MARYLAND, INC.)
Prefix 443-471 - PIKESVILLE, MD (US LEC OF MARYLAND, INC.)
Prefix 443-472 - COLUMBIA, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-473 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-474 - CATONSVL, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-475 - BALTIMORE, MD (MCI WORLDCOM COMMUNICATIONS, INC. - MD)
Prefix 443-476 - ANNAPOLIS, MD (VERIZON MARYLAND, INC.)
Prefix 443-477 - CAMBRIDGE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-478 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-479 - WATERLO236, MD (VERIZON MARYLAND, INC.)
Prefix 443-480 - CHESTERTN, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-481 - ANNAPOLIS, MD (VERIZON MARYLAND, INC.)
Prefix 443-482 - ANNAPOLIS, MD (VERIZON MARYLAND, INC.)
Prefix 443-483 - CARDIFF, MD (BROADWING COMMUNICATIONS. LLC - MD)
Prefix 443-484 - EDGEWOOD, MD (BROADWING COMMUNICATIONS. LLC - MD)
Prefix 443-485 - ELKTON, MD (BROADWING COMMUNICATIONS. LLC - MD)
Prefix 443-486 - PRINCEFRCK, MD (BROADWING COMMUNICATIONS. LLC - MD)
Prefix 443-487 - WESTMINSTR, MD (BROADWING COMMUNICATIONS. LLC - MD)
Prefix 443-488 - BALTIMORE, MD (LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.)
Prefix 443-489 - CHASE, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-490 - EDGEWOOD, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-491 - PARKTON, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-492 - ELKRIDGE, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-493 - DELMAR, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-494 - MILLERSVL, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-495 - PARKVILLE, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-496 - EASTON, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-497 - SALISBURY, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-498 - CATONSVL, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-499 - JARRETTSVL, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-500 - BALTIMORE, MD (LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.)
Prefix 443-501 - PIKESVILLE, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-502 - HAVREGRACE, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-503 - DUNDALK, MD (XO MARYLAND, LLC)
Prefix 443-504 - FALLSTON, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-505 - ESSEX, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-506 - BALTIMORE, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-507 - HAMPSTEAD, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-508 - HAMPSTEAD, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-509 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-510 - ANNAPOLIS, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-512 - EDGEWOOD, MD (VERIZON MARYLAND, INC.)
Prefix 443-513 - BERLIN, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-514 - CATONSVL, MD (US LEC OF MARYLAND, INC.)
Prefix 443-515 - CAMBRIDGE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-516 - SYKESVILLE, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-517 - GLENBURNIE, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-518 - COLUMBIA, MD (VERIZON MARYLAND, INC.)
Prefix 443-519 - TOWSON, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-520 - CATONSVL, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-521 - CAMBRIDGE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-522 - REISTERSTN, MD (PAETEC COMMUNICATIONS, INC. - MD)
Prefix 443-523 - SALISBURY, MD (VERIZON MARYLAND, INC.)
Prefix 443-524 - BALTIMORE, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-525 - BALTIMORE, MD (LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.)
Prefix 443-526 - HAVREGRACE, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-527 - BALTIMORE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-528 - BEL AIR, MD (SPRINT SPECTRUM L.P.)
Prefix 443-529 - BALTIMORE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-530 - DUNDALK, MD (PAETEC COMMUNICATIONS, INC. - MD)
Prefix 443-531 - BALTIMORE, MD (LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.)
Prefix 443-532 - PRINCEFRCK, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-533 - JARRETTSVL, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-534 - ANNAPOLIS, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-535 - COLUMBIA, MD (VERIZON MARYLAND, INC.)
Prefix 443-536 - WESTMINSTR, MD (SPRINT SPECTRUM L.P.)
Prefix 443-537 - COLUMBIA, MD (VERIZON MARYLAND, INC.)
Prefix 443-538 - COLUMBIA, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-539 - COLUMBIA, MD (US LEC OF MARYLAND, INC.)
Prefix 443-540 - BALTIMORE, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-541 - COCKEYSVL, MD (PAETEC COMMUNICATIONS, INC. - MD)
Prefix 443-542 - COLUMBIA, MD (COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD)
Prefix 443-543 - ARBUTUS, MD (VERIZON MARYLAND, INC.)
Prefix 443-544 - PIKESVILLE, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-545 - COLUMBIA, MD (BROADWING COMMUNICATIONS. LLC - MD)
Prefix 443-546 - COLUMBIA, MD (VERIZON MARYLAND, INC.)
Prefix 443-547 - WESTMINSTR, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-548 - PIKESVILLE, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-549 - DUNDALK, MD (US LEC OF MARYLAND, INC.)
Prefix 443-550 - NORTHBEACH, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-551 - WOODLAWN, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-552 - BALTIMORE, MD (VERIZON MARYLAND, INC.)
Prefix 443-553 - ELKTON, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-554 - CHASE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-555 - BALTIMORE, MD (VERIZON MARYLAND, INC.)
Prefix 443-556 - COCKEYSVL, MD (VERIZON MARYLAND, INC.)
Prefix 443-557 - GLENBURNIE, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-558 - ABERDEEN, MD (XO MARYLAND, LLC)
Prefix 443-559 - ESSEX, MD (COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD)
Prefix 443-560 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-561 - ELKRIDGE, MD (US LEC OF MARYLAND, INC.)
Prefix 443-562 - BALTIMORE, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-563 - BALTIMORE, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-564 - TOWSON, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-565 - RANDALLSTN, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-566 - CHESAPKECY, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-567 - BEL AIR, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-568 - ARBUTUS, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-569 - ANNAPOLIS, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-570 - BALTIMORE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-571 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-572 - GLENBURNIE, MD (VERIZON MARYLAND, INC.)
Prefix 443-573 - BALTIMORE, MD (US LEC OF MARYLAND, INC.)
Prefix 443-574 - ELLICOTTCY, MD (US LEC OF MARYLAND, INC.)
Prefix 443-575 - ARBUTUS, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-576 - RANDALLSTN, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-577 - GLENBURNIE, MD (US LEC OF MARYLAND, INC.)
Prefix 443-578 - COCKEYSVL, MD (XO MARYLAND, LLC)
Prefix 443-579 - ESSEX, MD (US LEC OF MARYLAND, INC.)
Prefix 443-580 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-581 - CHASE, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-582 - CHURCHVL, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-583 - COLUMBIA, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-584 - CROFTON, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-585 - DARLINGTON, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-586 - DUNDALK, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-587 - EDGEWOOD, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-588 - PARKVILLE, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-589 - COCKEYSVL, MD (US LEC OF MARYLAND, INC.)
Prefix 443-590 - REISTERSTN, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-591 - GLENBURNIE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-592 - ELKRIDGE, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-593 - ELKTON, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-594 - SPARROWSPT, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-595 - SPARKSGLNC, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-596 - ESSEX, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-597 - SEVERNA PK, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-598 - SHERWD FOR, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-599 - SEVERN, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-600 - ESSEX, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-601 - FALLSTON, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-602 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-603 - ANNAPOLIS, MD (PAETEC COMMUNICATIONS, INC. - MD)
Prefix 443-604 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-605 - WESTMINSTR, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-606 - FORK, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-607 - WEST RIVER, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-608 - TOWSON, MD (LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.)
Prefix 443-609 - SYKESVILLE, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-610 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-612 - CATONSVL, MD (VERIZON MARYLAND, INC.)
Prefix 443-613 - TOWSON, MD (LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.)
Prefix 443-614 - SALISBURY, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-615 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-616 - BEL AIR, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-617 - FALLSTON, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-618 - GLENBURNIE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-619 - BEL AIR, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-620 - WATERLO238, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-621 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-622 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-623 - GLENBURNIE, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-624 - PRINCEFRCK, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-625 - FORK, MD (BROADWING COMMUNICATIONS. LLC - MD)
Prefix 443-626 - CHASE, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-627 - BALTIMORE, MD (VERIZON MARYLAND, INC.)
Prefix 443-628 - GLENBURNIE, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-629 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-630 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-631 - CATONSVL, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-632 - TOWSON, MD (US LEC OF MARYLAND, INC.)
Prefix 443-633 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-634 - WATERLO236, MD (VERIZON MARYLAND, INC.)
Prefix 443-635 - BALTIMORE, MD (LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.)
Prefix 443-636 - CATONSVL, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-637 - ARGRGBSNIS, MD (XO MARYLAND, LLC)
Prefix 443-638 - ELLICOTTCY, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-639 - HAMPSTEAD, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-640 - BEL AIR, MD (US LEC OF MARYLAND, INC.)
Prefix 443-641 - PIKESVILLE, MD (BROADWING COMMUNICATIONS. LLC - MD)
Prefix 443-642 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-643 - BEL AIR, MD (VERIZON MARYLAND, INC.)
Prefix 443-644 - JARRETTSVL, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-645 - MILLERSVL, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-646 - NORTHBEACH, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-647 - NEWWINDSOR, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-648 - ESSEX, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-649 - SPARROWSPT, MD (US LEC OF MARYLAND, INC.)
Prefix 443-650 - REISTERSTN, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-651 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-652 - TOWSON, MD (VERIZON MARYLAND, INC.)
Prefix 443-653 - PARKVILLE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-654 - WATERLO236, MD (VERIZON MARYLAND, INC.)
Prefix 443-655 - BEL AIR, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-656 - COLUMBIA, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-657 - RANDALLSTN, MD (TW TELECOM OF MARYLAND LLC - MD)
Prefix 443-658 - WOODLAWN, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-659 - WEST RIVER, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-660 - PIKESVILLE, MD (COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD)
Prefix 443-661 - WATERLO238, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-662 - SPARKSGLNC, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-663 - WOODLAWN, MD (VERIZON MARYLAND, INC.)
Prefix 443-664 - OCEAN CITY, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-665 - NANTICOKE, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-668 - CATONSVL, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-669 - DELMAR, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-670 - CATONSVL, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-671 - NEWWINDSOR, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-672 - PARKTON, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-673 - BRYNPKLNCM, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-674 - NORTH EAST, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-675 - RANDALLSTN, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-676 - BALTIMORE, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-677 - BALTIMORE, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-678 - PARKVILLE, MD (VERIZON MARYLAND, INC.)
Prefix 443-679 - SEVERN, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-680 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-681 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-682 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-683 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-684 - PRINCEFRCK, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-685 - SEVERN, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-686 - FALLSTON, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-687 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-688 - SEVERN, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-689 - COCKEYSVL, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-690 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-691 - BALTIMORE, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-692 - BALTIMORE, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-693 - PERRYVILLE, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-694 - SEVERNA PK, MD (SPRINT SPECTRUM L.P.)
Prefix 443-695 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-696 - DUNDALK, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-697 - CATONSVL, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-698 - ODENTON, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-699 - ANNAPOLIS, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-701 - ARBUTUS, MD (XO MARYLAND, LLC)
Prefix 443-702 - ARGRGBSNIS, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-703 - BALTIMORE, MD (XO MARYLAND, LLC)
Prefix 443-704 - ODENTON, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-705 - COCKEYSVL, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-706 - CRISFIELD, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-707 - BALTIMORE, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-708 - BALTIMORE, MD (TW TELECOM OF MARYLAND LLC - MD)
Prefix 443-709 - ARBUTUS, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-710 - CATONSVL, MD (XO MARYLAND, LLC)
Prefix 443-712 - REISTERSTN, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-713 - COLUMBIA, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-714 - ANNAPOLIS, MD (SPRINT SPECTRUM L.P.)
Prefix 443-715 - NORTH EAST, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-716 - ANNAPOLIS, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-717 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-718 - COLUMBIA, MD (US LEC OF MARYLAND, INC.)
Prefix 443-719 - JARRETTSVL, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-720 - SEVERNA PK, MD (SPRINT SPECTRUM L.P.)
Prefix 443-721 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-722 - BALTIMORE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-723 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-724 - EASTON, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-725 - PARKVILLE, MD (PAETEC COMMUNICATIONS, INC. - MD)
Prefix 443-726 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-727 - BISHOPVL, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-728 - BERLIN, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-729 - WOODLAWN, MD (PAETEC COMMUNICATIONS, INC. - MD)
Prefix 443-730 - ESSEX, MD (PAETEC COMMUNICATIONS, INC. - MD)
Prefix 443-731 - PT DEPOSIT, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-732 - SILVER RUN, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-733 - WATERLO238, MD (AT&T LOCAL)
Prefix 443-734 - SEVERN, MD (VERIZON MARYLAND, INC.)
Prefix 443-735 - SALISBURY, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-736 - SALISBURY, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-737 - WATERLO238, MD (PAETEC COMMUNICATIONS, INC. - MD)
Prefix 443-738 - PIKESVILLE, MD (PAETEC COMMUNICATIONS, INC. - MD)
Prefix 443-739 - BALTIMORE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-740 - BALTIMORE, MD (TELCOVE OPERATIONS, INC. - MD)
Prefix 443-741 - COLUMBIA, MD (MCI WORLDCOM COMMUNICATIONS, INC. - MD)
Prefix 443-742 - BALTIMORE, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-743 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-744 - REISTERSTN, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-745 - COLUMBIA, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-746 - EASTON, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-747 - PT DEPOSIT, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-748 - MILLERSVL, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-749 - GLENBURNIE, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-750 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-751 - WOODLAWN, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-752 - BEL AIR, MD (GLOBAL NAPS, INC. - NY)
Prefix 443-753 - WATERLO236, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-754 - SALISBURY, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-755 - WATERLO238, MD (VERIZON MARYLAND, INC.)
Prefix 443-756 - BALTIMORE, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-757 - ELKRIDGE, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-758 - ANNAPOLIS, MD (AT&T LOCAL)
Prefix 443-759 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-760 - ABERDEEN, MD (AT&T LOCAL)
Prefix 443-761 - TOWSON, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-762 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-763 - GLENBURNIE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-764 - GLENBURNIE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-765 - CATONSVL, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-766 - COLUMBIA, MD (US LEC OF MARYLAND, INC.)
Prefix 443-767 - WORTHINGTN, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-768 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-769 - BALTIMORE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-770 - ARGRGBSNIS, MD (VERIZON MARYLAND, INC.)
Prefix 443-771 - PRINCEFRCK, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-772 - ESSEX, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-773 - BRYNPKLNCM, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-774 - BALTIMORE, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-775 - BALTIMORE, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-776 - BALTIMORE, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-777 - ESSEX, MD (VERIZON MARYLAND, INC.)
Prefix 443-778 - WATERLO236, MD (VERIZON MARYLAND, INC.)
Prefix 443-779 - ABERDEEN, MD (GLOBAL NAPS, INC. - NY)
Prefix 443-780 - WOODLAWN, MD (US LEC OF MARYLAND, INC.)
Prefix 443-781 - ARGRGBSNIS, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-782 - ANNAPOLIS, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-783 - SALISBURY, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-784 - ARGRGBSNIS, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-785 - ARBUTUS, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-786 - EASTON, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-787 - BEL AIR, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-788 - ABERDEEN, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-789 - WESTMINSTR, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-790 - GLENBURNIE, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-791 - TOWSON, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-792 - BRYNPKLNCM, MD (VERIZON MARYLAND, INC.)
Prefix 443-793 - PARKVILLE, MD (XO MARYLAND, LLC)
Prefix 443-794 - BALTIMORE, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-795 - SEVERN, MD (XO MARYLAND, LLC)
Prefix 443-796 - PIKESVILLE, MD (XO MARYLAND, LLC)
Prefix 443-797 - TOWSON, MD (XO MARYLAND, LLC)
Prefix 443-798 - TOWSON, MD (TW TELECOM OF MARYLAND LLC - MD)
Prefix 443-799 - BALTIMORE, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-800 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-801 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-802 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-803 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-804 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-805 - GLENBURNIE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-806 - BALTIMORE, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-807 - FALLSTON, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-808 - BALTIMORE, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-809 - BALTIMORE, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-810 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-812 - COLUMBIA, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-813 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-814 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-815 - ESSEX, MD (XO MARYLAND, LLC)
Prefix 443-816 - SEVERNA PK, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-817 - ARGRGBSNIS, MD (ALLEGIANCE TELECOM, INC. - MD)
Prefix 443-818 - ARGRGBSNIS, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-819 - BALTIMORE, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-820 - ELKRIDGE, MD (PAETEC COMMUNICATIONS, INC. - MD)
Prefix 443-821 - WESTMINSTR, MD (SPRINT SPECTRUM L.P.)
Prefix 443-822 - ANNAPOLIS, MD (SPRINT SPECTRUM L.P.)
Prefix 443-823 - TOWSON, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-824 - TOWSON, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-825 - BALTIMORE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-826 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-827 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-828 - ELLICOTTCY, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-829 - BALTIMORE, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-830 - CATONSVL, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-831 - BALTIMORE, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-832 - COLUMBIA, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-833 - ARBUTUS, MD (US LEC OF MARYLAND, INC.)
Prefix 443-834 - TOWSON, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-835 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-836 - BALTIMORE, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-837 - ANNAPOLIS, MD (US LEC OF MARYLAND, INC.)
Prefix 443-838 - BALTIMORE, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-839 - BALTIMORE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-840 - CATONSVL, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-841 - TOWSON, MD (VERIZON MARYLAND, INC.)
Prefix 443-842 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-843 - HAVREGRACE, MD (VERIZON MARYLAND, INC.)
Prefix 443-844 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-845 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-846 - TOWSON, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-847 - TOWSON, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-848 - GLENBURNIE, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-849 - TOWSON, MD (VERIZON MARYLAND, INC.)
Prefix 443-850 - BALTIMORE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-851 - CATONSVL, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-852 - ANNAPOLIS, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-853 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-854 - BALTIMORE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-855 - ABERDEEN, MD (LIGHTWAVE COMMUNICATIONS, LLC - MD)
Prefix 443-856 - OCEAN CITY, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-857 - BALTIMORE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-858 - BALTIMORE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-859 - SALISBURY, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-860 - CATONSVL, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-861 - ABERDEEN, MD (VERIZON MARYLAND, INC.)
Prefix 443-862 - TOWSON, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-863 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-864 - COLUMBIA, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-865 - BALTIMORE, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-866 - BEL AIR, MD (SPRINT SPECTRUM L.P.)
Prefix 443-867 - GLENBURNIE, MD (PAETEC COMMUNICATIONS, INC. - MD)
Prefix 443-868 - ESSEX, MD (VERIZON MARYLAND, INC.)
Prefix 443-869 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-870 - PIKESVILLE, MD (TW TELECOM OF MARYLAND LLC - MD)
Prefix 443-871 - ANNAPOLIS, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-872 - BALTIMORE, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-873 - BALTIMORE, MD (INFOTELECOM, LLC - MD)
Prefix 443-874 - BALTIMORE, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-875 - ANNAPOLIS, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-876 - BEL AIR, MD (SPRINT SPECTRUM L.P.)
Prefix 443-877 - NORTH EAST, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-878 - COLUMBIA, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-879 - DUNDALK, MD (VERIZON MARYLAND, INC.)
Prefix 443-880 - SALISBURY, MD (AT&T LOCAL)
Prefix 443-881 - REISTERSTN, MD (NEXTEL COMMUNICATIONS, INC.)
Prefix 443-882 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-883 - GLENBURNIE, MD (AT&T LOCAL)
Prefix 443-884 - BALTIMORE, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-885 - BALTIMORE, MD (VERIZON MARYLAND, INC.)
Prefix 443-886 - COCKEYSVL, MD (AT&T LOCAL)
Prefix 443-887 - CATONSVL, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-888 - PRINCEANNE, MD (CAVALIER TELEPHONE, LLC (MID-ATLANTIC) - MD)
Prefix 443-889 - GLENBURNIE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-890 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-891 - GLENBURNIE, MD (XO MARYLAND, LLC)
Prefix 443-892 - NEWWINDSOR, MD (BANDWIDTH.COM CLEC, LLC - MD)
Prefix 443-893 - WOODLAWN, MD (XO MARYLAND, LLC)
Prefix 443-894 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-895 - TOWSON, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-896 - COLUMBIA, MD (AT&T LOCAL)
Prefix 443-897 - BALTIMORE, MD (LEAP WIRELESS INTL, INC. DBA CRICKET COMM, INC.)
Prefix 443-898 - PIKESVILLE, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-899 - WATERLO238, MD (BROADWING COMMUNICATIONS. LLC - MD)
Prefix 443-901 - TOWSON, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-902 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-903 - BEL AIR, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-904 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-905 - ANNAPOLIS, MD (SPRINT SPECTRUM L.P.)
Prefix 443-906 - ANNAPOLIS, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-907 - ELKTON, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-908 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-909 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-910 - BEL AIR, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-912 - TOWSON, MD (CORE COMMUNICATIONS, INC. - MD)
Prefix 443-913 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-914 - WORTHINGTN, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-915 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-916 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-917 - COLUMBIA, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-918 - TANEYTOWN, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-919 - BALTIMORE, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-920 - SYKESVILLE, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-921 - TOWSON, MD (PAETEC COMMUNICATIONS, INC. - MD)
Prefix 443-922 - EDGEWOOD, MD (ATX TELECOMMUNICATIONS SERVICES, LTD)
Prefix 443-923 - BALTIMORE, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-924 - ANNAPOLIS, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-925 - BALTIMORE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-926 - ANNAPOLIS, MD (BROADWING COMMUNICATIONS. LLC - MD)
Prefix 443-927 - BALTIMORE, MD (BROADWING COMMUNICATIONS. LLC - MD)
Prefix 443-928 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-929 - PIKESVILLE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-930 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-931 - BALTIMORE, MD (MCI WORLDCOM COMMUNICATIONS, INC. - MD)
Prefix 443-932 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-933 - COCKEYSVL, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-934 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-935 - TOWSON, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-936 - BALTIMORE, MD (VERIZON MARYLAND, INC.)
Prefix 443-937 - UNION BDG, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-938 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-939 - BALTIMORE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-940 - PIKESVILLE, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-941 - ELKTON, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-942 - SEVERNA PK, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-943 - SPARROWSPT, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-944 - SALISBURY, MD (COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD)
Prefix 443-945 - ELKTON, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-946 - PARKVILLE, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-947 - PERRYVILLE, MD (GLOBAL NAPS SOUTH, INC. - MD)
Prefix 443-948 - BALTIMORE, MD (SPRINT SPECTRUM L.P.)
Prefix 443-949 - ANNAPOLIS, MD (COMCAST PHONE OF NORTHERN MARYLAND, INC. - MD)
Prefix 443-951 - ANNAPOLIS, MD (GLOBAL CROSSING LOCAL SERVICES, INC.-MD)
Prefix 443-952 - WESTMINSTR, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-953 - SALISBURY, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-954 - BALTIMORE, MD (PAETEC COMMUNICATIONS, INC. - MD)
Prefix 443-955 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-956 - BALTIMORE, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-957 - BALTIMORE, MD (AT&T LOCAL)
Prefix 443-960 - GLENBURNIE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-961 - PERRYVILLE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-962 - GLENBURNIE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-963 - BALTIMORE, MD (HALO WIRELESS SERVICES, INC.)
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Prefix 443-965 - BALTIMORE, MD (NEXTEL COMMUNICATIONS, INC.)
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Prefix 443-967 - NORTH EAST, MD (VERIZON MARYLAND, INC.)
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Prefix 443-969 - ESSEX, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-970 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-971 - TANEYTOWN, MD (BANDWIDTH.COM CLEC, LLC - MD)
Prefix 443-972 - CAMBRIDGE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-973 - ELLICOTTCY, MD (XO MARYLAND, LLC)
Prefix 443-974 - WESTMINSTR, MD (TELEPORT COMMUNICATIONS GROUP AMERICA, INC. - MD)
Prefix 443-975 - PRINCEFRCK, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-976 - CROFTON, MD (BALTIMORE-WASHINGTON TELEPHONE BWT)
Prefix 443-977 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-978 - SALISBURY, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-979 - COLUMBIA, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-980 - CATONSVL, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-981 - FALLSTON, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-982 - BALTIMORE, MD (YMAX COMMUNICATIONS CORP. - MD)
Prefix 443-983 - BALTIMORE, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-984 - BALTIMORE, MD (VERIZON MARYLAND, INC.)
Prefix 443-985 - RANDALLSTN, MD (OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC)
Prefix 443-986 - BALTIMORE, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-987 - BEL AIR, MD (AT&T LOCAL)
Prefix 443-988 - CENTREVL, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-989 - GLENBURNIE, MD (CAVALIER TELEPHONE MID-ATLANTIC, LLC - MD)
Prefix 443-990 - BALTIMORE, MD (BANDWIDTH.COM CLEC, LLC - MD)
Prefix 443-991 - TOWSON, MD (CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD)
Prefix 443-992 - BALTIMORE, MD (LEVEL 3 COMMUNICATIONS, LLC - MD)
Prefix 443-993 - ELKTON, MD (METRO PCS, INC.)
Prefix 443-994 - ANNAPOLIS, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-995 - ANNAPOLIS, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-996 - CATONSVL, MD (NEW CINGULAR WIRELESS PCS, LLC - DC)
Prefix 443-997 - BALTIMORE, MD (VERIZON MARYLAND, INC.)
Prefix 443-998 - PARKVILLE, MD (VERIZON MARYLAND, INC.)
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