Baltimore, MD — rate center
- State
- Maryland
- Active prefixes
- 447
- Carriers
- 42
- Pooled prefixes
- 293
- LATA
- 238
- Metro area
- Baltimore-Columbia-Towson, MD MSA
Phone numbers "from Baltimore" are, precisely speaking, numbers whose prefixes are anchored to the Baltimore rate center of Maryland, under 301, 410, 443, 667.
The rate center currently carries 447 working prefixes across 42 carriers. 293 prefixes participate in thousands-block pooling, so blocks of 1,000 numbers are shared between carriers.
The rate center belongs to the Baltimore-Columbia-Towson, MD Metropolitan Statistical Area. Routing-wise it sits in LATA 238.
Multiple area codes over one rate center (301/410/443/667) is the overlay pattern: same geography, different first three digits.
At 447 prefixes — a ceiling of 4,470,000 numbers — Baltimore is one of Maryland's heavyweight rate centers.
A Baltimore prefix on caller ID is a starting point, not proof of origin — numbers travel with their owners and displays can be spoofed. Use official callback numbers for anything sensitive.
Prefixes anchored to Baltimore
Showing 189 of 189
| Prefix | Code holder | Pooled |
|---|---|---|
| 410-207 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-209 | VERIZON MARYLAND, INC. | Yes |
| 410-215 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-217 | VERIZON MARYLAND, INC. | No |
| 410-218 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-223 | VERIZON MARYLAND, INC. | No |
| 410-225 | VERIZON MARYLAND, INC. | No |
| 410-230 | VERIZON MARYLAND, INC. | No |
| 410-232 | SPOK, INC. | No |
| 410-233 | VERIZON MARYLAND, INC. | No |
| 410-234 | VERIZON MARYLAND, INC. | No |
| 410-235 | VERIZON MARYLAND, INC. | No |
| 410-237 | VERIZON MARYLAND, INC. | Yes |
| 410-240 | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-241 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-243 | VERIZON MARYLAND, INC. | No |
| 410-244 | VERIZON MARYLAND, INC. | No |
| 410-246 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-254 | VERIZON MARYLAND, INC. | No |
| 410-258 | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-261 | VERIZON MARYLAND, INC. | Yes |
| 410-262 | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-274 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-276 | VERIZON MARYLAND, INC. | No |
| 410-291 | VERIZON MARYLAND, INC. | Yes |
| 410-299 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-301 | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-303 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-318 | VERIZON MARYLAND, INC. | Yes |
| 410-319 | VERIZON MARYLAND, INC. | Yes |
| 410-323 | VERIZON MARYLAND, INC. | No |
| 410-325 | VERIZON MARYLAND, INC. | Yes |
| 410-327 | VERIZON MARYLAND, INC. | No |
| 410-328 | VERIZON MARYLAND, INC. | No |
| 410-332 | VERIZON MARYLAND, INC. | No |
| 410-333 | VERIZON MARYLAND, INC. | No |
| 410-336 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-338 | VERIZON MARYLAND, INC. | Yes |
| 410-340 | NEW CINGULAR WIRELESS PCS, LLC - DC | No |
| 410-342 | VERIZON MARYLAND, INC. | No |
| 410-347 | VERIZON MARYLAND, INC. | No |
| 410-350 | VERIZON MARYLAND, INC. | Yes |
| 410-351 | SPOK, INC. | No |
| 410-354 | VERIZON MARYLAND, INC. | No |
| 410-355 | VERIZON MARYLAND, INC. | No |
| 410-358 | VERIZON MARYLAND, INC. | No |
| 410-359 | VERIZON MARYLAND, INC. | No |
| 410-361 | VERIZON MARYLAND, INC. | Yes |
| 410-362 | VERIZON MARYLAND, INC. | No |
| 410-365 | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-366 | VERIZON MARYLAND, INC. | No |
| 410-367 | VERIZON MARYLAND, INC. | No |
| 410-368 | VERIZON MARYLAND, INC. | Yes |
| 410-369 | LEVEL 3 TELECOM OF MARYLAND, LLC - MD | Yes |
| 410-371 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-375 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-382 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-383 | VERIZON MARYLAND, INC. | No |
| 410-385 | VERIZON MARYLAND, INC. | No |
| 410-387 | PAETEC ITEL, LLC | Yes |
| 410-389 | SPOK, INC. | No |
| 410-393 | VERIZON MARYLAND, INC. | No |
| 410-396 | VERIZON MARYLAND, INC. | No |
| 410-400 | PAETEC ITEL, LLC | Yes |
| 410-404 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-409 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-410 | ONVOY SPECTRUM, LLC | Yes |
| 410-419 | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-426 | VERIZON MARYLAND, INC. | No |
| 410-433 | VERIZON MARYLAND, INC. | No |
| 410-435 | VERIZON MARYLAND, INC. | No |
| 410-444 | VERIZON MARYLAND, INC. | No |
| 410-445 | SPOK, INC. | No |
| 410-448 | VERIZON MARYLAND, INC. | Yes |
| 410-450 | VERIZON MARYLAND, INC. | Yes |
| 410-454 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | No |
| 410-456 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-458 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-462 | VERIZON MARYLAND, INC. | No |
| 410-464 | VERIZON MARYLAND, INC. | Yes |
| 410-466 | VERIZON MARYLAND, INC. | No |
| 410-467 | VERIZON MARYLAND, INC. | No |
| 410-468 | VERIZON MARYLAND, INC. | No |
| 410-469 | VERIZON MARYLAND, INC. | Yes |
| 410-470 | VERIZON MARYLAND, INC. | Yes |
| 410-478 | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-483 | VERIZON MARYLAND, INC. | Yes |
| 410-485 | VERIZON MARYLAND, INC. | No |
| 410-488 | VERIZON MARYLAND, INC. | No |
| 410-493 | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-499 | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-500 | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-502 | VERIZON MARYLAND, INC. | No |
| 410-516 | VERIZON MARYLAND, INC. | Yes |
| 410-522 | VERIZON MARYLAND, INC. | Yes |
| 410-523 | VERIZON MARYLAND, INC. | No |
| 410-525 | VERIZON MARYLAND, INC. | Yes |
| 410-528 | VERIZON MARYLAND, INC. | Yes |
| 410-532 | VERIZON MARYLAND, INC. | No |
| 410-534 | VERIZON MARYLAND, INC. | Yes |
| 410-537 | VERIZON MARYLAND, INC. | Yes |
| 410-539 | VERIZON MARYLAND, INC. | No |
| 410-542 | VERIZON MARYLAND, INC. | No |
| 410-545 | VERIZON MARYLAND, INC. | No |
| 410-547 | VERIZON MARYLAND, INC. | No |
| 410-550 | VERIZON MARYLAND, INC. | No |
| 410-554 | VERIZON MARYLAND, INC. | No |
| 410-558 | VERIZON MARYLAND, INC. | Yes |
| 410-563 | VERIZON MARYLAND, INC. | No |
| 410-566 | VERIZON MARYLAND, INC. | No |
| 410-576 | VERIZON MARYLAND, INC. | No |
| 410-578 | VERIZON MARYLAND, INC. | No |
| 410-585 | VERIZON MARYLAND, INC. | Yes |
| 410-591 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-598 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-601 | VERIZON MARYLAND, INC. | Yes |
| 410-605 | VERIZON MARYLAND, INC. | No |
| 410-613 | VERIZON MARYLAND, INC. | No |
| 410-614 | VERIZON MARYLAND, INC. | No |
| 410-617 | VERIZON MARYLAND, INC. | Yes |
| 410-622 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-624 | VERIZON MARYLAND, INC. | Yes |
| 410-625 | VERIZON MARYLAND, INC. | No |
| 410-627 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-631 | VERIZON MARYLAND, INC. | Yes |
| 410-633 | VERIZON MARYLAND, INC. | No |
| 410-637 | VERIZON MARYLAND, INC. | Yes |
| 410-640 | SPOK, INC. | No |
| 410-644 | VERIZON MARYLAND, INC. | No |
| 410-646 | VERIZON MARYLAND, INC. | Yes |
| 410-649 | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | Yes |
| 410-659 | VERIZON MARYLAND, INC. | No |
| 410-662 | VERIZON MARYLAND, INC. | Yes |
| 410-664 | VERIZON MARYLAND, INC. | No |
| 410-669 | VERIZON MARYLAND, INC. | No |
| 410-675 | VERIZON MARYLAND, INC. | No |
| 410-685 | VERIZON MARYLAND, INC. | No |
| 410-706 | VERIZON MARYLAND, INC. | No |
| 410-710 | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-727 | VERIZON MARYLAND, INC. | No |
| 410-728 | VERIZON MARYLAND, INC. | No |
| 410-732 | VERIZON MARYLAND, INC. | No |
| 410-735 | PAETEC ITEL, LLC | Yes |
| 410-736 | VERIZON MARYLAND, INC. | Yes |
| 410-743 | SPOK, INC. | No |
| 410-746 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-752 | VERIZON MARYLAND, INC. | No |
| 410-759 | NEW CINGULAR WIRELESS PCS, LLC - DC | Yes |
| 410-764 | VERIZON MARYLAND, INC. | No |
| 410-767 | VERIZON MARYLAND, INC. | No |
| 410-779 | LEVEL 3 COMMUNICATIONS, LLC - MD | Yes |
| 410-783 | VERIZON MARYLAND, INC. | No |
| 410-800 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | Yes |
| 410-801 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-804 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-805 | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-814 | PAETEC ITEL, LLC | Yes |
| 410-826 | ONVOY, LLC - MD | Yes |
| 410-837 | VERIZON MARYLAND, INC. | No |
| 410-843 | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | No |
| 410-844 | PEERLESS NETWORK OF MARYLAND, LLC | Yes |
| 410-856 | VERIZON MARYLAND, INC. | Yes |
| 410-864 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-878 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-889 | VERIZON MARYLAND, INC. | No |
| 410-895 | VERIZON MARYLAND, INC. | No |
| 410-900 | PAETEC ITEL, LLC | Yes |
| 410-905 | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-906 | VERIZON MARYLAND, INC. | No |
| 410-908 | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-913 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-915 | BALTIMORE-WASHINGTON TELEPHONE (BWT) | No |
| 410-916 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-925 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-929 | BANDWIDTH.COM CLEC, LLC - MD | Yes |
| 410-935 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-945 | VERIZON MARYLAND, INC. | No |
| 410-947 | VERIZON MARYLAND, INC. | No |
| 410-949 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | Yes |
| 410-951 | TELEPORT COMMUNICATIONS AMERICA, LLC - MD | No |
| 410-952 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-955 | VERIZON MARYLAND, INC. | No |
| 410-960 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | No |
| 410-961 | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-962 | VERIZON MARYLAND, INC. | No |
| 410-963 | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-977 | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | Yes |
| 410-982 | QUANTUM TELECOMMUNICATIONS, INC. - MD | Yes |
| 410-986 | VERIZON MARYLAND, INC. | No |
FAQ
What area code is Baltimore, MD?
Baltimore is served by 4 area codes — 301, 410, 443, 667 — which overlay the same territory.
How many prefixes does Baltimore have?
447 active NXX prefixes are anchored to this rate center in NANPA records, held by 42 carriers.
Is a call from a Baltimore prefix really from Baltimore?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.