VERIZON MARYLAND, INC.
510 prefixes in 410 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 410-201 | BALTIMORE | 9212 | — | — |
| 410-203 | ELLICOTTCY | 9212 | — | — |
| 410-204 | ARBUTUS | 9212 | — | Yes |
| 410-208 | BERLIN | 9212 | — | Yes |
| 410-209 | BALTIMORE | 9212 | — | Yes |
| 410-213 | OCEAN CITY | 9212 | — | Yes |
| 410-216 | ANNAPOLIS | 9212 | — | Yes |
| 410-217 | BALTIMORE | 9212 | — | — |
| 410-219 | SALISBURY | 9212 | — | — |
| 410-221 | CAMBRIDGE | 9212 | — | — |
| 410-222 | SEVERN | 9212 | — | — |
| 410-223 | BALTIMORE | 9212 | — | — |
| 410-224 | ANNAPOLIS | 9212 | — | — |
| 410-225 | BALTIMORE | 9212 | — | — |
| 410-226 | OXFORD | 9212 | — | Yes |
| 410-228 | CAMBRIDGE | 9212 | — | — |
| 410-229 | COCKEYSVL | 9212 | — | — |
| 410-230 | BALTIMORE | 9212 | — | — |
| 410-233 | BALTIMORE | 9212 | — | — |
| 410-234 | BALTIMORE | 9212 | — | — |
| 410-235 | BALTIMORE | 9212 | — | — |
| 410-237 | BALTIMORE | 9212 | — | Yes |
| 410-238 | ESSEX | 9212 | — | Yes |
| 410-239 | REISTERSTN | 9212 | — | — |
| 410-242 | ARBUTUS | 9212 | — | — |
| 410-243 | BALTIMORE | 9212 | — | — |
| 410-244 | BALTIMORE | 9212 | — | — |
| 410-247 | ARBUTUS | 9212 | — | — |
| 410-248 | PARKVILLE | 9212 | — | Yes |
| 410-249 | TOWSON | 9212 | — | Yes |
| 410-250 | OCEAN CITY | 9212 | — | — |
| 410-252 | TOWSON | 9212 | — | — |
| 410-254 | BALTIMORE | 9212 | — | — |
| 410-255 | ARGRGBSNIS | 9212 | — | — |
| 410-256 | PARKVILLE | 9212 | — | — |
| 410-257 | NORTHBEACH | 9212 | — | — |
| 410-260 | SEVERNA PK | 9212 | — | Yes |
| 410-261 | BALTIMORE | 9212 | — | Yes |
| 410-263 | ANNAPOLIS | 9212 | — | — |
| 410-264 | WATERLO236 | 9212 | — | Yes |
| 410-265 | WOODLAWN | 9212 | — | — |
| 410-266 | ANNAPOLIS | 9212 | — | — |
| 410-267 | ANNAPOLIS | 9212 | — | Yes |
| 410-268 | ANNAPOLIS | 9212 | — | — |
| 410-269 | SEVERNA PK | 9212 | — | Yes |
| 410-272 | ABERDEEN | 9212 | — | — |
| 410-273 | ABERDEEN | 9212 | — | Yes |
| 410-275 | CECILTON | 9212 | — | Yes |
| 410-276 | BALTIMORE | 9212 | — | — |
| 410-277 | WOODLAWN | 9212 | — | Yes |
| 410-278 | ABERDEEN | 9212 | — | — |
| 410-280 | ANNAPOLIS | 9212 | — | Yes |
| 410-281 | WOODLAWN | 9212 | — | — |
| 410-282 | DUNDALK | 9212 | — | — |
| 410-284 | DUNDALK | 9212 | — | — |
| 410-285 | DUNDALK | 9212 | — | — |
| 410-286 | NORTHBEACH | 9212 | — | Yes |
| 410-287 | NORTH EAST | 9212 | — | — |
| 410-288 | DUNDALK | 9212 | — | — |
| 410-289 | OCEAN CITY | 9212 | — | — |
| 410-290 | COLUMBIA | 9212 | — | — |
| 410-291 | BALTIMORE | 9212 | — | Yes |
| 410-295 | ANNAPOLIS | 9212 | — | — |
| 410-296 | TOWSON | 9212 | — | — |
| 410-297 | ABERDEEN | 9212 | — | Yes |
| 410-298 | WOODLAWN | 9212 | — | — |
| 410-305 | ODENTON | 9212 | — | Yes |
| 410-306 | ABERDEEN | 9212 | — | Yes |
| 410-307 | TOWSON | 9212 | — | Yes |
| 410-308 | TOWSON | 9212 | — | — |
| 410-309 | COLUMBIA | 9212 | — | — |
| 410-312 | COLUMBIA | 9212 | — | — |
| 410-313 | ELLICOTTCY | 9212 | — | — |
| 410-315 | SEVERNA PK | 9212 | — | Yes |
| 410-316 | COCKEYSVL | 9212 | — | Yes |
| 410-318 | BALTIMORE | 9212 | — | Yes |
| 410-319 | BALTIMORE | 9212 | — | Yes |
| 410-321 | TOWSON | 9212 | — | — |
| 410-323 | BALTIMORE | 9212 | — | — |
| 410-324 | TOWSON | 9212 | — | Yes |
| 410-325 | BALTIMORE | 9212 | — | Yes |
| 410-326 | SOLOMONS | 9212 | — | — |
| 410-327 | BALTIMORE | 9212 | — | — |
| 410-328 | BALTIMORE | 9212 | — | — |
| 410-329 | COCKEYSVL | 9212 | — | Yes |
| 410-332 | BALTIMORE | 9212 | — | — |
| 410-333 | BALTIMORE | 9212 | — | — |
| 410-334 | SALISBURY | 9212 | — | Yes |
| 410-335 | CHASE | 9212 | — | — |
| 410-337 | TOWSON | 9212 | — | — |
| 410-338 | BALTIMORE | 9212 | — | Yes |
| 410-339 | TOWSON | 9212 | — | Yes |
| 410-341 | SALISBURY | 9212 | — | — |
| 410-342 | BALTIMORE | 9212 | — | — |
| 410-343 | SPARKSGLNC | 9212 | — | Yes |
| 410-344 | CHASE | 9212 | — | Yes |
| 410-345 | PIKESVILLE | 9212 | — | Yes |
| 410-346 | SILVER RUN | 9212 | — | Yes |
| 410-347 | BALTIMORE | 9212 | — | — |
| 410-348 | STILL POND | 9212 | — | Yes |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.