All 410 prefixes (NXX)
This is the complete table of active NXX prefixes in area code 410 — 783 central-office codes, each anchored to a rate center in Maryland. Use the filter to jump to a prefix, a locality, or a carrier.
27 carriers hold 410's prefixes across 102 rate centers; the biggest concentration is Baltimore with 447. Thousands-block pooling covers 377 prefixes (48%), so a prefix's code holder is not necessarily the carrier of a given number in it.
Showing 783 of 783
| Prefix | Rate center | Carrier (code holder) | Pooled |
|---|---|---|---|
| 410-200 | Easton | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-202 | Salisbury | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | Yes |
| 410-203 | Ellicott City | VERIZON MARYLAND, INC. | No |
| 410-204 | Arbutus | VERIZON MARYLAND, INC. | Yes |
| 410-205 | Pikesville | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-206 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-207 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-208 | Berlin | VERIZON MARYLAND, INC. | Yes |
| 410-209 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-210 | Glen Burnie | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | Yes |
| 410-212 | Annapolis | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-213 | Ocean City | VERIZON MARYLAND, INC. | Yes |
| 410-214 | Rising Sun | CORE COMMUNICATIONS, INC.- MD | Yes |
| 410-215 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-216 | Annapolis | VERIZON MARYLAND, INC. | Yes |
| 410-217 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-218 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-219 | Salisbury | VERIZON MARYLAND, INC. | No |
| 410-220 | Elkridge | METROPCS, INC. | Yes |
| 410-221 | Cambridge | VERIZON MARYLAND, INC. | No |
| 410-222 | Severn | VERIZON MARYLAND, INC. | No |
| 410-223 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-224 | Annapolis | VERIZON MARYLAND, INC. | No |
| 410-225 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-226 | Oxford | VERIZON MARYLAND, INC. | Yes |
| 410-227 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-228 | Cambridge | VERIZON MARYLAND, INC. | No |
| 410-229 | Cockeysville | VERIZON MARYLAND, INC. | No |
| 410-230 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-231 | Solomons | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-232 | Baltimore | SPOK, INC. | No |
| 410-233 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-234 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-235 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-236 | Towson | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-237 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-238 | Essex | VERIZON MARYLAND, INC. | Yes |
| 410-239 | Reisterstown | VERIZON MARYLAND, INC. | No |
| 410-240 | Baltimore | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-241 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-242 | Arbutus | VERIZON MARYLAND, INC. | No |
| 410-243 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-244 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-245 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-246 | Baltimore | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-247 | Arbutus | VERIZON MARYLAND, INC. | No |
| 410-248 | Parkville | VERIZON MARYLAND, INC. | Yes |
| 410-249 | Towson | VERIZON MARYLAND, INC. | Yes |
| 410-250 | Ocean City | VERIZON MARYLAND, INC. | No |
| 410-251 | Salisbury | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-252 | Towson | VERIZON MARYLAND, INC. | No |
| 410-253 | Easton | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-254 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-255 | Armiger-gibson Island | VERIZON MARYLAND, INC. | No |
| 410-256 | Parkville | VERIZON MARYLAND, INC. | No |
| 410-257 | North Beach | VERIZON MARYLAND, INC. | No |
| 410-258 | Baltimore | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-259 | Westminster | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-260 | Severna Park | VERIZON MARYLAND, INC. | Yes |
| 410-261 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-262 | Baltimore | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-263 | Annapolis | VERIZON MARYLAND, INC. | No |
| 410-264 | Waterloo 236 | VERIZON MARYLAND, INC. | Yes |
| 410-265 | Woodlawn | VERIZON MARYLAND, INC. | No |
| 410-266 | Annapolis | VERIZON MARYLAND, INC. | No |
| 410-267 | Annapolis | VERIZON MARYLAND, INC. | Yes |
| 410-268 | Annapolis | VERIZON MARYLAND, INC. | No |
| 410-269 | Severna Park | VERIZON MARYLAND, INC. | Yes |
| 410-270 | Salisbury | REDI-CALL COMMUNICATIONS CO. | No |
| 410-271 | Annapolis | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-272 | Aberdeen | VERIZON MARYLAND, INC. | No |
| 410-273 | Aberdeen | VERIZON MARYLAND, INC. | Yes |
| 410-274 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-275 | Cecilton | VERIZON MARYLAND, INC. | Yes |
| 410-276 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-277 | Woodlawn | VERIZON MARYLAND, INC. | Yes |
| 410-278 | Aberdeen | VERIZON MARYLAND, INC. | No |
| 410-279 | Annapolis | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-280 | Annapolis | VERIZON MARYLAND, INC. | Yes |
| 410-281 | Woodlawn | VERIZON MARYLAND, INC. | No |
| 410-282 | Dundalk | VERIZON MARYLAND, INC. | No |
| 410-283 | Towson | SPOK, INC. | No |
| 410-284 | Dundalk | VERIZON MARYLAND, INC. | No |
| 410-285 | Dundalk | VERIZON MARYLAND, INC. | No |
| 410-286 | North Beach | VERIZON MARYLAND, INC. | Yes |
| 410-287 | North East | VERIZON MARYLAND, INC. | No |
| 410-288 | Dundalk | VERIZON MARYLAND, INC. | No |
| 410-289 | Ocean City | VERIZON MARYLAND, INC. | No |
| 410-290 | Columbia | VERIZON MARYLAND, INC. | No |
| 410-291 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-292 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-293 | Annapolis | PAETEC ITEL, LLC | No |
| 410-294 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-295 | Annapolis | VERIZON MARYLAND, INC. | No |
| 410-296 | Towson | VERIZON MARYLAND, INC. | No |
| 410-297 | Aberdeen | VERIZON MARYLAND, INC. | Yes |
| 410-298 | Woodlawn | VERIZON MARYLAND, INC. | No |
| 410-299 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-300 | Elkridge | METROPCS, INC. | Yes |
| 410-301 | Baltimore | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-302 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-303 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-304 | Queenstown | IDT AMERICA, CORP. - MD | Yes |
| 410-305 | Odenton | VERIZON MARYLAND, INC. | Yes |
| 410-306 | Aberdeen | VERIZON MARYLAND, INC. | Yes |
| 410-307 | Towson | VERIZON MARYLAND, INC. | Yes |
| 410-308 | Towson | VERIZON MARYLAND, INC. | No |
| 410-309 | Columbia | VERIZON MARYLAND, INC. | No |
| 410-310 | Easton | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-312 | Columbia | VERIZON MARYLAND, INC. | No |
| 410-313 | Ellicott City | VERIZON MARYLAND, INC. | No |
| 410-314 | Arbutus | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-315 | Severna Park | VERIZON MARYLAND, INC. | Yes |
| 410-316 | Cockeysville | VERIZON MARYLAND, INC. | Yes |
| 410-317 | Armiger-gibson Island | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-318 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-319 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-320 | Annapolis | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-321 | Towson | VERIZON MARYLAND, INC. | No |
| 410-322 | Bel Air | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-323 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-324 | Towson | VERIZON MARYLAND, INC. | Yes |
| 410-325 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-326 | Solomons | VERIZON MARYLAND, INC. | No |
| 410-327 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-328 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-329 | Cockeysville | VERIZON MARYLAND, INC. | Yes |
| 410-330 | Cambridge | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-331 | Elkridge | SPOK, INC. | No |
| 410-332 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-333 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-334 | Salisbury | VERIZON MARYLAND, INC. | Yes |
| 410-335 | Chase | VERIZON MARYLAND, INC. | No |
| 410-336 | Baltimore | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-337 | Towson | VERIZON MARYLAND, INC. | No |
| 410-338 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-339 | Towson | VERIZON MARYLAND, INC. | Yes |
| 410-340 | Baltimore | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-341 | Salisbury | VERIZON MARYLAND, INC. | No |
| 410-342 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-343 | Sparks Glencoe | VERIZON MARYLAND, INC. | Yes |
| 410-344 | Chase | VERIZON MARYLAND, INC. | Yes |
| 410-345 | Pikesville | VERIZON MARYLAND, INC. | Yes |
| 410-346 | Silver Run | VERIZON MARYLAND, INC. | Yes |
| 410-347 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-348 | Still Pond | VERIZON MARYLAND, INC. | Yes |
| 410-349 | Annapolis | VERIZON MARYLAND, INC. | Yes |
| 410-350 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-351 | Baltimore | SPOK, INC. | No |
| 410-352 | Bishopville | VERIZON MARYLAND, INC. | Yes |
| 410-353 | Annapolis | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-354 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-355 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-356 | Pikesville | VERIZON MARYLAND, INC. | No |
| 410-357 | Parkton | VERIZON MARYLAND, INC. | Yes |
| 410-358 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-359 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-360 | Armiger-gibson Island | VERIZON MARYLAND, INC. | No |
| 410-361 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-362 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-363 | Pikesville | VERIZON MARYLAND, INC. | No |
| 410-364 | Hillsboro | VERIZON MARYLAND, INC. | Yes |
| 410-365 | Baltimore | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-366 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-367 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-368 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-369 | Baltimore | LEVEL 3 TELECOM OF MARYLAND, LLC - MD | Yes |
| 410-370 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-371 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-372 | Towson | VERIZON MARYLAND, INC. | Yes |
| 410-373 | Towson | SPOK, INC. | No |
| 410-374 | Hampstead | VERIZON MARYLAND, INC. | Yes |
| 410-375 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-376 | Vienna | VERIZON MARYLAND, INC. | Yes |
| 410-377 | Towson | VERIZON MARYLAND, INC. | No |
| 410-378 | Port Deposit | VERIZON MARYLAND, INC. | Yes |
| 410-379 | Elkridge | VERIZON MARYLAND, INC. | No |
| 410-380 | Salisbury | REDI-CALL COMMUNICATIONS CO. | No |
| 410-381 | Columbia | VERIZON MARYLAND, INC. | No |
| 410-382 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-383 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-384 | Severna Park | VERIZON MARYLAND, INC. | Yes |
| 410-385 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-386 | Westminster | VERIZON MARYLAND, INC. | No |
| 410-387 | Baltimore | PAETEC ITEL, LLC | Yes |
| 410-388 | Sparrows Point | VERIZON MARYLAND, INC. | No |
| 410-389 | Baltimore | SPOK, INC. | No |
| 410-390 | Ocean City | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | Yes |
| 410-391 | Essex | VERIZON MARYLAND, INC. | No |
| 410-392 | Elkton | VERIZON MARYLAND, INC. | No |
| 410-393 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-394 | Solomons | VERIZON MARYLAND, INC. | Yes |
| 410-395 | Arbutus | VERIZON MARYLAND, INC. | Yes |
| 410-396 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-397 | Wingate | VERIZON MARYLAND, INC. | Yes |
| 410-398 | Elkton | VERIZON MARYLAND, INC. | No |
| 410-399 | Bel Air | VERIZON MARYLAND, INC. | Yes |
| 410-400 | Baltimore | PAETEC ITEL, LLC | Yes |
| 410-401 | Brooklyn Park Linthicum | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-402 | Catonsville | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-403 | Cockeysville | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-404 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-405 | Fork | VERIZON MARYLAND, INC. | Yes |
| 410-406 | Essex | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-407 | Elkridge | VERIZON MARYLAND, INC. | No |
| 410-408 | Towson | SPOK, INC. | No |
| 410-409 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-410 | Baltimore | ONVOY SPECTRUM, LLC | Yes |
| 410-412 | Glen Burnie | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-413 | Pikesville | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-414 | Prince Frederick | VERIZON MARYLAND, INC. | Yes |
| 410-415 | Pikesville | VERIZON MARYLAND, INC. | Yes |
| 410-416 | Waterloo 236 | AMERICAN MESSAGING SERVICES, LLC | No |
| 410-417 | Edgewood | VERIZON MARYLAND, INC. | Yes |
| 410-418 | Ellicott City | VERIZON MARYLAND, INC. | No |
| 410-419 | Baltimore | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-420 | Bel Air | VERIZON MARYLAND, INC. | Yes |
| 410-421 | Severna Park | VERIZON MARYLAND, INC. | Yes |
| 410-422 | Salisbury | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-423 | Columbia | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | No |
| 410-424 | Glen Burnie | VERIZON MARYLAND, INC. | Yes |
| 410-425 | Smith Island | VERIZON MARYLAND, INC. | Yes |
| 410-426 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-427 | Towson | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | No |
| 410-428 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-429 | Worthington | VERIZON MARYLAND, INC. | Yes |
| 410-430 | Salisbury | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-431 | Severna Park | VERIZON MARYLAND, INC. | Yes |
| 410-432 | Severna Park | VERIZON MARYLAND, INC. | Yes |
| 410-433 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-434 | Towson | SPOK, INC. | No |
| 410-435 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-436 | Edgewood | VERIZON MARYLAND, INC. | Yes |
| 410-437 | Armiger-gibson Island | VERIZON MARYLAND, INC. | No |
| 410-438 | Sudlersville | VERIZON MARYLAND, INC. | Yes |
| 410-439 | Armiger-gibson Island | VERIZON MARYLAND, INC. | No |
| 410-440 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-441 | Elkton | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-442 | Ellicott City | VERIZON MARYLAND, INC. | Yes |
| 410-443 | Easton | LEVEL 3 COMMUNICATIONS, LLC - MD | Yes |
| 410-444 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-445 | Baltimore | SPOK, INC. | No |
| 410-446 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-447 | Columbia | SPOK, INC. | No |
| 410-448 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-449 | Solomons | BANDWIDTH.COM CLEC, LLC - MD | Yes |
| 410-450 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-451 | Crofton | VERIZON MARYLAND, INC. | No |
| 410-452 | Cardiff | VERIZON MARYLAND, INC. | Yes |
| 410-453 | Towson | VERIZON MARYLAND, INC. | Yes |
| 410-454 | Baltimore | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | No |
| 410-455 | Catonsville | VERIZON MARYLAND, INC. | No |
| 410-456 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-457 | Darlington | VERIZON MARYLAND, INC. | Yes |
| 410-458 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-459 | Fallston | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-460 | Elkridge | SPOK, INC. | No |
| 410-461 | Ellicott City | VERIZON MARYLAND, INC. | No |
| 410-462 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-463 | Trappe | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | Yes |
| 410-464 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-465 | Ellicott City | VERIZON MARYLAND, INC. | No |
| 410-466 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-467 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-468 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-469 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-470 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-471 | Elkridge | VERIZON MARYLAND, INC. | No |
| 410-472 | Sparks Glencoe | VERIZON MARYLAND, INC. | Yes |
| 410-473 | Towson | SPOK, INC. | No |
| 410-474 | Prince Frederick | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-475 | Towson | SPOK, INC. | No |
| 410-476 | Trappe | VERIZON MARYLAND, INC. | Yes |
| 410-477 | Sparrows Point | VERIZON MARYLAND, INC. | No |
| 410-478 | Baltimore | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-479 | Denton | VERIZON MARYLAND, INC. | Yes |
| 410-480 | Ellicott City | VERIZON MARYLAND, INC. | No |
| 410-482 | Greensboro | VERIZON MARYLAND, INC. | Yes |
| 410-483 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-484 | Pikesville | VERIZON MARYLAND, INC. | No |
| 410-485 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-486 | Pikesville | VERIZON MARYLAND, INC. | No |
| 410-487 | Glen Burnie | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-488 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-489 | Glenwood | VERIZON MARYLAND, INC. | Yes |
| 410-490 | Centreville | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-491 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-492 | Towson | SPOK, INC. | No |
| 410-493 | Baltimore | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-494 | Towson | VERIZON MARYLAND, INC. | No |
| 410-495 | Prince Frederick | VERIZON MARYLAND, INC. | No |
| 410-496 | Randallstown | VERIZON MARYLAND, INC. | No |
| 410-497 | Parkville | COMCAST IP PHONE, LLC | Yes |
| 410-498 | Cockeysville | PAETEC ITEL, LLC | Yes |
| 410-499 | Baltimore | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-500 | Baltimore | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-501 | Arbutus | PAETEC ITEL, LLC | Yes |
| 410-502 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-503 | Elkridge | VERIZON MARYLAND, INC. | No |
| 410-504 | Pikesville | VERIZON MARYLAND, INC. | Yes |
| 410-505 | Ellicott City | VERIZON MARYLAND, INC. | Yes |
| 410-506 | Elkton | VERIZON MARYLAND, INC. | Yes |
| 410-507 | Annapolis | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-508 | Glen Burnie | VERIZON MARYLAND, INC. | Yes |
| 410-509 | Waterloo 236 | BALTIMORE-WASHINGTON TELEPHONE (BWT) | No |
| 410-510 | Fork | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | Yes |
| 410-512 | Towson | VERIZON MARYLAND, INC. | Yes |
| 410-513 | Parkville | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | Yes |
| 410-514 | Severn | VERIZON MARYLAND, INC. | Yes |
| 410-515 | Fork | VERIZON MARYLAND, INC. | No |
| 410-516 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-517 | Reisterstown | VERIZON MARYLAND, INC. | Yes |
| 410-518 | Severna Park | VERIZON MARYLAND, INC. | Yes |
| 410-519 | Severn | VERIZON MARYLAND, INC. | No |
| 410-520 | Ocean City | VERIZON MARYLAND, INC. | Yes |
| 410-521 | Randallstown | VERIZON MARYLAND, INC. | No |
| 410-522 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-523 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-524 | Ocean City | VERIZON MARYLAND, INC. | No |
| 410-525 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-526 | Reisterstown | VERIZON MARYLAND, INC. | No |
| 410-527 | Cockeysville | VERIZON MARYLAND, INC. | No |
| 410-528 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-529 | Parkville | VERIZON MARYLAND, INC. | No |
| 410-530 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-531 | Columbia | VERIZON MARYLAND, INC. | No |
| 410-532 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-533 | Annapolis | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-534 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-535 | Prince Frederick | VERIZON MARYLAND, INC. | No |
| 410-536 | Arbutus | VERIZON MARYLAND, INC. | Yes |
| 410-537 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-538 | Fork | VERIZON MARYLAND, INC. | Yes |
| 410-539 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-540 | Elkridge | VERIZON MARYLAND, INC. | No |
| 410-541 | Severna Park | VERIZON MARYLAND, INC. | Yes |
| 410-542 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-543 | Salisbury | VERIZON MARYLAND, INC. | No |
| 410-544 | Severna Park | VERIZON MARYLAND, INC. | No |
| 410-545 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-546 | Salisbury | VERIZON MARYLAND, INC. | No |
| 410-547 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-548 | Salisbury | VERIZON MARYLAND, INC. | No |
| 410-549 | Sykesville | VERIZON MARYLAND, INC. | No |
| 410-550 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-551 | Severn | VERIZON MARYLAND, INC. | No |
| 410-552 | Sykesville | VERIZON MARYLAND, INC. | Yes |
| 410-553 | Glen Burnie | VERIZON MARYLAND, INC. | Yes |
| 410-554 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-556 | Church Hill | VERIZON MARYLAND, INC. | Yes |
| 410-557 | Fork | VERIZON MARYLAND, INC. | Yes |
| 410-558 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-559 | Pikesville | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | Yes |
| 410-560 | Towson | VERIZON MARYLAND, INC. | Yes |
| 410-561 | Towson | VERIZON MARYLAND, INC. | Yes |
| 410-562 | Annapolis | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-563 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-564 | Elkridge | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | Yes |
| 410-565 | Arbutus | LEVEL 3 TELECOM OF MARYLAND, LLC - MD | Yes |
| 410-566 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-567 | Elkridge | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-568 | Cockeysville | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | Yes |
| 410-569 | Edgewood | VERIZON MARYLAND, INC. | No |
| 410-570 | Annapolis | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-571 | Annapolis | VERIZON MARYLAND, INC. | Yes |
| 410-572 | Salisbury | VERIZON MARYLAND, INC. | Yes |
| 410-573 | Annapolis | VERIZON MARYLAND, INC. | No |
| 410-574 | Essex | VERIZON MARYLAND, INC. | No |
| 410-575 | Fork | VERIZON MARYLAND, INC. | Yes |
| 410-576 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-577 | Pikesville | VERIZON MARYLAND, INC. | Yes |
| 410-578 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-579 | Elkridge | VERIZON MARYLAND, INC. | No |
| 410-580 | Pikesville | VERIZON MARYLAND, INC. | No |
| 410-581 | Pikesville | VERIZON MARYLAND, INC. | No |
| 410-582 | Glen Burnie | VERIZON MARYLAND, INC. | Yes |
| 410-583 | Towson | VERIZON MARYLAND, INC. | Yes |
| 410-584 | Cockeysville | VERIZON MARYLAND, INC. | Yes |
| 410-585 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-586 | Prince Frederick | VERIZON MARYLAND, INC. | No |
| 410-587 | Arbutus | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Yes |
| 410-588 | Bel Air | VERIZON MARYLAND, INC. | Yes |
| 410-589 | Brooklyn Park Linthicum | LEVEL 3 TELECOM OF MARYLAND, LLC - MD | Yes |
| 410-590 | Glen Burnie | VERIZON MARYLAND, INC. | No |
| 410-591 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-592 | Fork | VERIZON MARYLAND, INC. | Yes |
| 410-593 | Fork | VERIZON MARYLAND, INC. | Yes |
| 410-594 | Woodlawn | VERIZON MARYLAND, INC. | No |
| 410-595 | Glen Burnie | LEVEL 3 TELECOM OF MARYLAND, LLC - MD | Yes |
| 410-596 | Westminster | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-597 | Woodlawn | VERIZON MARYLAND, INC. | No |
| 410-598 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-599 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-600 | Berlin | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-601 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-602 | Pikesville | VERIZON MARYLAND, INC. | No |
| 410-603 | Salisbury | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-604 | Stevensville | VERIZON MARYLAND, INC. | Yes |
| 410-605 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-606 | Waterloo 236 | VERIZON MARYLAND, INC. | No |
| 410-607 | Towson | SPOK, INC. | No |
| 410-608 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-609 | Brooklyn Park Linthicum | VERIZON MARYLAND, INC. | Yes |
| 410-610 | Prince Frederick | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-612 | Edgewood | VERIZON MARYLAND, INC. | Yes |
| 410-613 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-614 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-615 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-616 | Towson | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-617 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-618 | Perryville | IDT AMERICA, CORP. - MD | Yes |
| 410-619 | Waterloo 236 | AMERICAN MESSAGING SERVICES, LLC | No |
| 410-620 | Elkton | VERIZON MARYLAND, INC. | Yes |
| 410-621 | Princess Anne | VERIZON MARYLAND, INC. | Yes |
| 410-622 | Baltimore | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-623 | Marion | VERIZON MARYLAND, INC. | Yes |
| 410-624 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-625 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-626 | Annapolis | VERIZON MARYLAND, INC. | Yes |
| 410-627 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-628 | Cockeysville | VERIZON MARYLAND, INC. | Yes |
| 410-629 | Berlin | VERIZON MARYLAND, INC. | Yes |
| 410-630 | Chase | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-631 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-632 | Snow Hill | VERIZON MARYLAND, INC. | Yes |
| 410-633 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-634 | Ridgely | VERIZON MARYLAND, INC. | Yes |
| 410-635 | New Windsor | VERIZON MARYLAND, INC. | Yes |
| 410-636 | Brooklyn Park Linthicum | VERIZON MARYLAND, INC. | No |
| 410-637 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-638 | Bel Air | VERIZON MARYLAND, INC. | No |
| 410-639 | Rock Hall | VERIZON MARYLAND, INC. | Yes |
| 410-640 | Baltimore | SPOK, INC. | No |
| 410-641 | Berlin | VERIZON MARYLAND, INC. | No |
| 410-642 | Perryville | VERIZON MARYLAND, INC. | Yes |
| 410-643 | Stevensville | VERIZON MARYLAND, INC. | No |
| 410-644 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-645 | Woodlawn | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-646 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-647 | Severna Park | VERIZON MARYLAND, INC. | No |
| 410-648 | Galena | VERIZON MARYLAND, INC. | Yes |
| 410-649 | Baltimore | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | Yes |
| 410-650 | Dundalk | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | Yes |
| 410-651 | Princess Anne | VERIZON MARYLAND, INC. | No |
| 410-652 | Bel Air | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-653 | Pikesville | VERIZON MARYLAND, INC. | No |
| 410-654 | Pikesville | VERIZON MARYLAND, INC. | No |
| 410-655 | Randallstown | VERIZON MARYLAND, INC. | No |
| 410-656 | North East | ARMSTRONG TELECOMMUNICATIONS, INC. - MD | Yes |
| 410-657 | Parkville | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-658 | Rising Sun | ARMSTRONG TEL. CO. OF MARYLAND | No |
| 410-659 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-660 | Elkridge | METROPCS, INC. | Yes |
| 410-661 | Parkville | VERIZON MARYLAND, INC. | No |
| 410-662 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-663 | Parkville | VERIZON MARYLAND, INC. | No |
| 410-664 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-665 | Parkville | VERIZON MARYLAND, INC. | No |
| 410-666 | Cockeysville | VERIZON MARYLAND, INC. | No |
| 410-667 | Cockeysville | VERIZON MARYLAND, INC. | No |
| 410-668 | Parkville | VERIZON MARYLAND, INC. | No |
| 410-669 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-670 | Edgewood | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-671 | Edgewood | VERIZON MARYLAND, INC. | Yes |
| 410-672 | Odenton | VERIZON MARYLAND, INC. | Yes |
| 410-673 | Preston | VERIZON MARYLAND, INC. | Yes |
| 410-674 | Odenton | VERIZON MARYLAND, INC. | No |
| 410-675 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-676 | Edgewood | VERIZON MARYLAND, INC. | No |
| 410-677 | Salisbury | VERIZON MARYLAND, INC. | No |
| 410-678 | Elkridge | SPOK, INC. | No |
| 410-679 | Fork | VERIZON MARYLAND, INC. | No |
| 410-680 | Ellicott City | LEVEL 3 TELECOM OF MARYLAND, LLC - MD | Yes |
| 410-681 | Towson | SPOK, INC. | No |
| 410-682 | Essex | VERIZON MARYLAND, INC. | Yes |
| 410-683 | Cockeysville | VERIZON MARYLAND, INC. | Yes |
| 410-684 | Glen Burnie | VERIZON MARYLAND, INC. | Yes |
| 410-685 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-686 | Essex | VERIZON MARYLAND, INC. | No |
| 410-687 | Essex | VERIZON MARYLAND, INC. | No |
| 410-688 | Fallston | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-689 | Glen Burnie | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | Yes |
| 410-690 | Easton | LEVEL 3 COMMUNICATIONS, LLC - MD | Yes |
| 410-691 | Glen Burnie | VERIZON MARYLAND, INC. | Yes |
| 410-692 | Jarrettsville | VERIZON MARYLAND, INC. | Yes |
| 410-693 | Annapolis | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-694 | Glen Burnie | VERIZON MARYLAND, INC. | Yes |
| 410-695 | Odenton | VERIZON MARYLAND, INC. | Yes |
| 410-696 | Ellicott City | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-697 | Millersville | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-698 | Fork | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-699 | Chestertown | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-701 | Randallstown | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-702 | Reisterstown | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-703 | Annapolis | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-704 | Towson | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | No |
| 410-705 | Waterloo 236 | BANDWIDTH.COM CLEC, LLC - MD | Yes |
| 410-706 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-707 | Columbia | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-708 | Chestertown | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-709 | Sparrows Point | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-710 | Baltimore | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-712 | Elkridge | VERIZON MARYLAND, INC. | No |
| 410-713 | Salisbury | LEVEL 3 COMMUNICATIONS, LLC - MD | Yes |
| 410-714 | Easton | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-715 | Columbia | VERIZON MARYLAND, INC. | No |
| 410-716 | Towson | VERIZON MARYLAND, INC. | Yes |
| 410-717 | Elkridge | LEVEL 3 TELECOM OF MARYLAND, LLC - MD | Yes |
| 410-718 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-719 | Catonsville | VERIZON MARYLAND, INC. | No |
| 410-720 | Ellicott City | VERIZON MARYLAND, INC. | Yes |
| 410-721 | Crofton | VERIZON MARYLAND, INC. | No |
| 410-722 | Waterloo 236 | VERIZON MARYLAND, INC. | No |
| 410-723 | Ocean City | VERIZON MARYLAND, INC. | No |
| 410-724 | Waterloo 236 | VERIZON MARYLAND, INC. | Yes |
| 410-725 | Easton | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-726 | Salisbury | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-727 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-728 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-729 | Severn | VERIZON MARYLAND, INC. | Yes |
| 410-730 | Columbia | VERIZON MARYLAND, INC. | No |
| 410-731 | Annapolis | SPOK, INC. | No |
| 410-732 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-733 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-734 | Churchville | VERIZON MARYLAND, INC. | Yes |
| 410-735 | Baltimore | PAETEC ITEL, LLC | Yes |
| 410-736 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-737 | Arbutus | VERIZON MARYLAND, INC. | No |
| 410-738 | Waterloo 236 | VERIZON MARYLAND, INC. | No |
| 410-739 | Centreville | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-740 | Columbia | VERIZON MARYLAND, INC. | No |
| 410-741 | West River | VERIZON MARYLAND, INC. | Yes |
| 410-742 | Salisbury | VERIZON MARYLAND, INC. | No |
| 410-743 | Baltimore | SPOK, INC. | No |
| 410-744 | Catonsville | VERIZON MARYLAND, INC. | No |
| 410-745 | Saint Michaels | VERIZON MARYLAND, INC. | Yes |
| 410-746 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-747 | Catonsville | VERIZON MARYLAND, INC. | No |
| 410-748 | Ellicott City | SPOK, INC. | No |
| 410-749 | Salisbury | VERIZON MARYLAND, INC. | No |
| 410-750 | Ellicott City | VERIZON MARYLAND, INC. | No |
| 410-751 | Westminster | VERIZON MARYLAND, INC. | No |
| 410-752 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-753 | Pikesville | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-754 | Federalsburg | VERIZON MARYLAND, INC. | Yes |
| 410-755 | Warwick | VERIZON MARYLAND, INC. | Yes |
| 410-756 | Taneytown | VERIZON MARYLAND, INC. | Yes |
| 410-757 | Annapolis | VERIZON MARYLAND, INC. | No |
| 410-758 | Centreville | VERIZON MARYLAND, INC. | Yes |
| 410-759 | Baltimore | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-760 | Glen Burnie | VERIZON MARYLAND, INC. | No |
| 410-761 | Glen Burnie | VERIZON MARYLAND, INC. | No |
| 410-762 | Glen Burnie | VERIZON MARYLAND, INC. | Yes |
| 410-763 | Easton | VERIZON MARYLAND, INC. | Yes |
| 410-764 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-765 | Glen Burnie | VERIZON MARYLAND, INC. | No |
| 410-766 | Glen Burnie | VERIZON MARYLAND, INC. | No |
| 410-767 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-768 | Glen Burnie | VERIZON MARYLAND, INC. | No |
| 410-769 | Towson | VERIZON MARYLAND, INC. | Yes |
| 410-770 | Easton | VERIZON MARYLAND, INC. | Yes |
| 410-771 | Cockeysville | VERIZON MARYLAND, INC. | No |
| 410-772 | Columbia | VERIZON MARYLAND, INC. | Yes |
| 410-773 | Cockeysville | VERIZON MARYLAND, INC. | Yes |
| 410-774 | Crofton | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-775 | Union Bridge | VERIZON MARYLAND, INC. | Yes |
| 410-776 | Bel Air | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | Yes |
| 410-777 | Severna Park | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-778 | Chestertown | VERIZON MARYLAND, INC. | No |
| 410-779 | Baltimore | LEVEL 3 COMMUNICATIONS, LLC - MD | Yes |
| 410-780 | Essex | VERIZON MARYLAND, INC. | No |
| 410-781 | Ellicott City | VERIZON MARYLAND, INC. | Yes |
| 410-782 | Elkridge | VERIZON MARYLAND, INC. | Yes |
| 410-783 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-784 | Deal Island | VERIZON MARYLAND, INC. | Yes |
| 410-785 | Cockeysville | VERIZON MARYLAND, INC. | No |
| 410-786 | Woodlawn | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | No |
| 410-787 | Glen Burnie | VERIZON MARYLAND, INC. | No |
| 410-788 | Catonsville | VERIZON MARYLAND, INC. | No |
| 410-789 | Brooklyn Park Linthicum | VERIZON MARYLAND, INC. | No |
| 410-790 | Towson | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-791 | Waterloo 236 | VERIZON MARYLAND, INC. | No |
| 410-792 | Waterloo 236 | VERIZON MARYLAND, INC. | No |
| 410-793 | Severna Park | VERIZON MARYLAND, INC. | Yes |
| 410-794 | Columbia | LEVEL 3 TELECOM OF MARYLAND, LLC - MD | Yes |
| 410-795 | Sykesville | VERIZON MARYLAND, INC. | No |
| 410-796 | Elkridge | VERIZON MARYLAND, INC. | Yes |
| 410-797 | Waterloo 236 | VERIZON MARYLAND, INC. | No |
| 410-798 | West River | VERIZON MARYLAND, INC. | No |
| 410-799 | Waterloo 238 | VERIZON MARYLAND, INC. | No |
| 410-800 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | Yes |
| 410-801 | Baltimore | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-802 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-803 | Fork | VERIZON MARYLAND, INC. | Yes |
| 410-804 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-805 | Baltimore | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-806 | Towson | SPOK, INC. | No |
| 410-807 | Catonsville | LEVEL 3 TELECOM OF MARYLAND, LLC - MD | Yes |
| 410-808 | Fallston | METROPCS, INC. | Yes |
| 410-809 | Bel Air | PAETEC ITEL, LLC | Yes |
| 410-810 | Chestertown | VERIZON MARYLAND, INC. | Yes |
| 410-812 | Towson | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-813 | Waterloo 236 | VERIZON MARYLAND, INC. | No |
| 410-814 | Baltimore | PAETEC ITEL, LLC | Yes |
| 410-815 | Waterloo 236 | VERIZON MARYLAND, INC. | No |
| 410-816 | Towson | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | Yes |
| 410-817 | Fork | VERIZON MARYLAND, INC. | Yes |
| 410-818 | Catonsville | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | Yes |
| 410-819 | Easton | VERIZON MARYLAND, INC. | Yes |
| 410-820 | Easton | VERIZON MARYLAND, INC. | No |
| 410-821 | Towson | VERIZON MARYLAND, INC. | No |
| 410-822 | Easton | VERIZON MARYLAND, INC. | No |
| 410-823 | Towson | VERIZON MARYLAND, INC. | No |
| 410-824 | Waterloo 236 | LEVEL 3 TELECOM OF MARYLAND, LLC - MD | Yes |
| 410-825 | Towson | VERIZON MARYLAND, INC. | No |
| 410-826 | Baltimore | ONVOY, LLC - MD | Yes |
| 410-827 | Queenstown | VERIZON MARYLAND, INC. | Yes |
| 410-828 | Towson | VERIZON MARYLAND, INC. | No |
| 410-829 | Easton | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | Yes |
| 410-830 | Towson | VERIZON MARYLAND, INC. | Yes |
| 410-831 | Salisbury | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-832 | Towson | VERIZON MARYLAND, INC. | Yes |
| 410-833 | Reisterstown | VERIZON MARYLAND, INC. | No |
| 410-834 | Waterloo 236 | CENTURYLINK COMMUNICATIONS, LLC | Yes |
| 410-835 | Willards | VERIZON MARYLAND, INC. | Yes |
| 410-836 | Bel Air | VERIZON MARYLAND, INC. | No |
| 410-837 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-838 | Bel Air | VERIZON MARYLAND, INC. | No |
| 410-839 | Towson | SPOK, INC. | No |
| 410-840 | Reisterstown | VERIZON MARYLAND, INC. | Yes |
| 410-841 | Severna Park | VERIZON MARYLAND, INC. | Yes |
| 410-842 | Towson | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-843 | Baltimore | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | No |
| 410-844 | Baltimore | PEERLESS NETWORK OF MARYLAND, LLC | Yes |
| 410-845 | Salisbury | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-846 | Severn | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-847 | Towson | VERIZON MARYLAND, INC. | Yes |
| 410-848 | Westminster | VERIZON MARYLAND, INC. | No |
| 410-849 | Sherwood Forest | VERIZON MARYLAND, INC. | Yes |
| 410-850 | Glen Burnie | VERIZON MARYLAND, INC. | No |
| 410-851 | Towson | VERIZON MARYLAND, INC. | No |
| 410-852 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-853 | Towson | VERIZON MARYLAND, INC. | Yes |
| 410-854 | Waterloo 236 | VERIZON MARYLAND, INC. | No |
| 410-855 | Glen Burnie | VERIZON MARYLAND, INC. | Yes |
| 410-856 | Baltimore | VERIZON MARYLAND, INC. | Yes |
| 410-857 | Westminster | VERIZON MARYLAND, INC. | No |
| 410-858 | Annapolis | VERIZON MARYLAND, INC. | Yes |
| 410-859 | Glen Burnie | VERIZON MARYLAND, INC. | No |
| 410-860 | Salisbury | VERIZON MARYLAND, INC. | No |
| 410-861 | Westminster | VERIZON MARYLAND, INC. | Yes |
| 410-862 | Waterloo 236 | ONVOY, LLC - MD | Yes |
| 410-863 | Glen Burnie | VERIZON MARYLAND, INC. | Yes |
| 410-864 | Baltimore | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-865 | Glen Burnie | VERIZON MARYLAND, INC. | Yes |
| 410-866 | Essex | VERIZON MARYLAND, INC. | No |
| 410-867 | West River | VERIZON MARYLAND, INC. | Yes |
| 410-868 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-869 | Catonsville | VERIZON MARYLAND, INC. | Yes |
| 410-870 | Parkville | COMCAST IP PHONE, LLC | Yes |
| 410-871 | Westminster | VERIZON MARYLAND, INC. | Yes |
| 410-872 | Columbia | VERIZON MARYLAND, INC. | No |
| 410-873 | Nanticoke | VERIZON MARYLAND, INC. | Yes |
| 410-874 | Odenton | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-875 | Sykesville | VERIZON MARYLAND, INC. | Yes |
| 410-876 | Reisterstown | VERIZON MARYLAND, INC. | No |
| 410-877 | Fallston | VERIZON MARYLAND, INC. | Yes |
| 410-878 | Baltimore | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-879 | Fork | VERIZON MARYLAND, INC. | No |
| 410-880 | Waterloo 236 | VERIZON MARYLAND, INC. | No |
| 410-881 | Sherwood Forest | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-882 | Parkville | VERIZON MARYLAND, INC. | No |
| 410-883 | Sharptown | VERIZON MARYLAND, INC. | Yes |
| 410-884 | Columbia | VERIZON MARYLAND, INC. | No |
| 410-885 | Chesapeake City | VERIZON MARYLAND, INC. | Yes |
| 410-886 | Tilghman | VERIZON MARYLAND, INC. | Yes |
| 410-887 | Towson | VERIZON MARYLAND, INC. | No |
| 410-888 | Waterloo 236 | VERIZON MARYLAND, INC. | Yes |
| 410-889 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-890 | Towson | SPOK, INC. | No |
| 410-891 | Cockeysville | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-892 | Glen Burnie | VERIZON MARYLAND, INC. | Yes |
| 410-893 | Fork | VERIZON MARYLAND, INC. | No |
| 410-894 | Towson | SPOK, INC. | No |
| 410-895 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-896 | Delmar | VERIZON MARYLAND, INC. | Yes |
| 410-897 | Annapolis | VERIZON MARYLAND, INC. | Yes |
| 410-898 | Waterloo 236 | VERIZON MARYLAND, INC. | No |
| 410-899 | Towson | SPOK, INC. | No |
| 410-900 | Baltimore | PAETEC ITEL, LLC | Yes |
| 410-901 | Cambridge | VERIZON MARYLAND, INC. | Yes |
| 410-902 | Pikesville | VERIZON MARYLAND, INC. | No |
| 410-903 | Severna Park | METROPCS, INC. | Yes |
| 410-904 | Waterloo 238 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-905 | Baltimore | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-906 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-907 | Woodlawn | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-908 | Baltimore | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-909 | Elkridge | SPOK, INC. | No |
| 410-910 | Columbia | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | No |
| 410-912 | Salisbury | PAETEC ITEL, LLC | No |
| 410-913 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-914 | Churchville | PAETEC ITEL, LLC | Yes |
| 410-915 | Baltimore | BALTIMORE-WASHINGTON TELEPHONE (BWT) | No |
| 410-916 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-917 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-918 | Essex | VERIZON MARYLAND, INC. | Yes |
| 410-919 | Annapolis | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-920 | Elkton | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-921 | Severn | LEVEL 3 TELECOM OF MARYLAND, LLC - MD | Yes |
| 410-922 | Randallstown | VERIZON MARYLAND, INC. | No |
| 410-923 | Millersville | VERIZON MARYLAND, INC. | No |
| 410-924 | Easton | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-925 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-926 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-927 | Odenton | LEVEL 3 TELECOM OF MARYLAND, LLC - MD | Yes |
| 410-928 | Millington | VERIZON MARYLAND, INC. | Yes |
| 410-929 | Baltimore | BANDWIDTH.COM CLEC, LLC - MD | Yes |
| 410-930 | Waterloo 236 | REDI-CALL COMMUNICATIONS CO. | No |
| 410-931 | Parkville | VERIZON MARYLAND, INC. | No |
| 410-932 | Elkridge | SPOK, INC. | No |
| 410-933 | Parkville | VERIZON MARYLAND, INC. | No |
| 410-934 | Annapolis | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-935 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-936 | Salisbury | COMCAST IP PHONE, LLC | Yes |
| 410-937 | Fallston | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-938 | Towson | VERIZON MARYLAND, INC. | Yes |
| 410-939 | Havre De Grace | VERIZON MARYLAND, INC. | No |
| 410-940 | Annapolis | PAETEC ITEL, LLC | Yes |
| 410-941 | Jarrettsville | VERIZON MARYLAND, INC. | Yes |
| 410-942 | Havre De Grace | VERIZON MARYLAND, INC. | Yes |
| 410-943 | Hurlock | VERIZON MARYLAND, INC. | Yes |
| 410-944 | Woodlawn | VERIZON MARYLAND, INC. | No |
| 410-945 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-946 | Severna Park | VERIZON MARYLAND, INC. | Yes |
| 410-947 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-948 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-949 | Baltimore | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-951 | Baltimore | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | No |
| 410-952 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-953 | Columbia | VERIZON MARYLAND, INC. | Yes |
| 410-955 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-956 | Annapolis | VERIZON MARYLAND, INC. | No |
| 410-957 | Pocomoke | VERIZON MARYLAND, INC. | Yes |
| 410-960 | Baltimore | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-961 | Baltimore | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-962 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-963 | Baltimore | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-964 | Columbia | VERIZON MARYLAND, INC. | No |
| 410-965 | Woodlawn | VERIZON MARYLAND, INC. | No |
| 410-966 | Woodlawn | VERIZON MARYLAND, INC. | No |
| 410-967 | Towson | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-968 | Crisfield | VERIZON MARYLAND, INC. | Yes |
| 410-969 | Severn | VERIZON MARYLAND, INC. | No |
| 410-970 | Sykesville | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-971 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-972 | Annapolis | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | Yes |
| 410-973 | Berlin | MCC TELEPHONY OF THE MID-ATLANTIC, LLC - MD | Yes |
| 410-974 | Severna Park | VERIZON MARYLAND, INC. | No |
| 410-975 | Severna Park | VERIZON MARYLAND, INC. | Yes |
| 410-977 | Baltimore | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-978 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-979 | Catonsville | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-980 | Annapolis | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | Yes |
| 410-981 | Glen Burnie | VERIZON MARYLAND, INC. | Yes |
| 410-982 | Baltimore | QUANTUM TELECOMMUNICATIONS, INC. - MD | Yes |
| 410-983 | Fork | VERIZON MARYLAND, INC. | Yes |
| 410-984 | Sykesville | METROPCS, INC. | Yes |
| 410-985 | Waterloo 236 | BALTIMORE-WASHINGTON TELEPHONE (BWT) | No |
| 410-986 | Baltimore | VERIZON MARYLAND, INC. | No |
| 410-987 | Severn | VERIZON MARYLAND, INC. | No |
| 410-988 | Ellicott City | VERIZON MARYLAND, INC. | Yes |
| 410-989 | Fork | VERIZON MARYLAND, INC. | Yes |
| 410-990 | Annapolis | VERIZON MARYLAND, INC. | No |
| 410-991 | Annapolis | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-992 | Columbia | VERIZON MARYLAND, INC. | Yes |
| 410-993 | Glen Burnie | VERIZON MARYLAND, INC. | No |
| 410-994 | Edgewood | VERIZON MARYLAND, INC. | Yes |
| 410-995 | Ellicott City | VERIZON MARYLAND, INC. | Yes |
| 410-996 | Elkton | VERIZON MARYLAND, INC. | Yes |
| 410-997 | Columbia | VERIZON MARYLAND, INC. | No |
| 410-998 | Pikesville | VERIZON MARYLAND, INC. | Yes |
| 410-999 | Glen Burnie | BALTIMORE-WASHINGTON TELEPHONE (BWT) | Yes |
FAQ
How many prefixes does area code 410 have?
783 NXX prefixes are currently active per NANPA records (of a theoretical maximum of 792 assignable).
What does "pooled" mean in this table?
A pooled prefix is split into ten 1,000-number blocks that can be assigned to different carriers, so numbers sharing the prefix may be served by different companies. 377 of 410's prefixes are pooled.
Can I tell a number's current carrier from its prefix?
Only the original code holder. Number portability means any individual number may have moved to another carrier while keeping its digits.