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 |
|---|---|---|---|---|---|
| 631-778 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | CENTRAISLP | NY | |
| 631-780 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | SMITHTOWN | NY | |
| 631-791 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | PTJEFFERSN | NY | |
| 631-820 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | RONKONKOMA | NY | |
| 631-832 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BAYPORT | NY | |
| 631-837 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NORTHPORT | NY | |
| 631-850 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | W COMMACK | NY | |
| 631-857 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | COLDSPGHBR | NY | |
| 631-860 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DEER PARK | NY | |
| 631-861 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | FARMINGDL | NY | |
| 631-869 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BELLPORT | NY | |
| 631-879 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | PATCHOGUE | NY | |
| 631-883 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BAYPORT | NY | |
| 631-892 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BAY SHORE | NY | |
| 631-913 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | RONKONKOMA | NY | |
| 631-947 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BELLPORT | NY | |
| 631-962 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | FARMINGDL | NY | |
| 631-963 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | CENTRAISLP | NY | |
| 631-964 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | DEER PARK | NY | |
| 631-978 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | PTJEFFERSN | NY | |
| 631-982 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | SMITHTOWN | NY | |
| 631-983 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BABYLON | NY | |
| 631-993 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | COMMACK | NY | |
| 631-995 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | YAPHANK | NY | |
| 636-203 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | FENTON | MO | |
| 636-229 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | HARVESTER | MO | |
| 636-237 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | CHESTERFLD | MO | |
| 636-238 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | MANCHESTER | MO | |
| 636-328 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | ST CHARLES | MO | |
| 636-345 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | HARVESTER | MO | |
| 636-410 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | ST CHARLES | MO | |
| 636-412 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | VALLEYPARK | MO | |
| 636-431 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | VALLEYPARK | MO | |
| 636-435 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | VALLEYPARK | MO | |
| 636-438 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | MANCHESTER | MO | |
| 636-492 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | FENTON | MO | |
| 636-533 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | FENTON | MO | |
| 636-534 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | CHESTERFLD | MO | |
| 636-557 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | MANCHESTER | MO | |
| 636-573 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | ST CHARLES | MO | |
| 636-594 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | MANCHESTER | MO | |
| 636-622 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | TROY | MO | |
| 636-754 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | ST CHARLES | MO | |
| 636-787 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | CHESTERFLD | MO | |
| 636-793 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | HARVESTER | MO | |
| 636-794 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | HARVESTER | MO | |
| 636-866 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | ST CHARLES | MO | |
| 636-893 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | MANCHESTER | MO | |
| 636-898 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | CHESTERFLD | MO | |
| 646-224 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY |
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.