NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 2026-04
Which carriers received which NPA-NXX prefixes, and where. Assignments are initial assignments from NANPA records — because of number portability, the current serving carrier of individual numbers may differ. For finer-grained activity, see the thousands-block view above.
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| Assigned | NPA-NXX | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 440-745 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | GATESMILLS | OH | |
| 440-751 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | OBERLIN | OH | |
| 440-753 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | HILLCREST | OH | |
| 440-756 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | OLMSTEDFLS | OH | |
| 440-799 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | CLEVELAND | OH | |
| 440-809 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | VICTORY | OH | |
| 440-824 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | BEREA | OH | |
| 440-848 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | NOROYALTON | OH | |
| 440-860 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | WICKLIFFE | OH | |
| 440-863 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | BEREA | OH | |
| 440-866 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | VICTORY | OH | |
| 440-876 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | STRONGSVL | OH | |
| 440-879 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | STRONGSVL | OH | |
| 440-922 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | BRECKSVL | OH | |
| 440-925 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | TRINITY | OH | |
| 440-947 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | HILLCREST | OH | |
| 442-214 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TWNTYNPLMS | CA | |
| 443-224 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | 7228 | BALTIMORE | MD | |
| 443-261 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | 7228 | SEVERNA PK | MD | |
| 443-276 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLUMBIA | MD | |
| 443-279 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TOWSON | MD | |
| 443-281 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COCKEYSVL | MD | |
| 443-288 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ELLICOTTCY | MD | |
| 443-308 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SEVERN | MD | |
| 443-400 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BRYNPKLNCM | MD | |
| 443-407 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DUNDALK | MD | |
| 443-408 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SPARROWSPT | MD | |
| 443-440 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ANNAPOLIS | MD | |
| 443-458 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ANNAPOLIS | MD | |
| 443-460 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ESSEX | MD | |
| 443-498 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CATONSVL | MD | |
| 443-503 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DUNDALK | MD | |
| 443-524 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BALTIMORE | MD | |
| 443-548 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PIKESVILLE | MD | |
| 443-557 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | GLENBURNIE | MD | |
| 443-568 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ARBUTUS | MD | |
| 443-588 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PARKVILLE | MD | |
| 443-692 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BALTIMORE | MD | |
| 443-701 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ARBUTUS | MD | |
| 443-703 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BALTIMORE | MD | |
| 443-710 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CATONSVL | MD | |
| 443-753 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WATERLO236 | MD | |
| 443-773 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BRYNPKLNCM | MD | |
| 443-779 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ABERDEEN | MD | |
| 443-782 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ANNAPOLIS | MD | |
| 443-793 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PARKVILLE | MD | |
| 443-795 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SEVERN | MD | |
| 443-796 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PIKESVILLE | MD | |
| 443-797 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TOWSON | MD | |
| 443-815 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ESSEX | MD |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 2026-04 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.