NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/18/2026
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 |
|---|---|---|---|---|---|
| 856-294 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | SWEDESBORO | NJ | |
| 856-368 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | RIVERSIDE | NJ | |
| 856-422 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | FRANKLINVL | NJ | |
| 856-431 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | GLASSBORO | NJ | |
| 856-446 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | MARLTON | NJ | |
| 856-454 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | LAUREL SPG | NJ | |
| 856-470 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | HADDONFLD | NJ | |
| 856-473 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | HADDON HTS | NJ | |
| 856-474 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | GLOUCESTER | NJ | |
| 856-475 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | GLOUCESTER | NJ | |
| 856-477 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | COLLINGSWD | NJ | |
| 856-479 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | CAMDEN | NJ | |
| 856-481 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | BLACKWOOD | NJ | |
| 856-483 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | BEAVER BRK | NJ | |
| 856-494 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | WENONAH | NJ | |
| 856-521 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | ELMER | NJ | |
| 856-522 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | HADDON HTS | NJ | |
| 856-532 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | MERCHANTVL | NJ | |
| 856-533 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | MOORESTOWN | NJ | |
| 856-535 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | MULLICA HL | NJ | |
| 856-536 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CAMDEN | NJ | |
| 856-537 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | WOODBURY | NJ | |
| 856-539 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | WENONAH | NJ | |
| 856-542 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | SWEDESBORO | NJ | |
| 856-543 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | RIVERTON | NJ | |
| 856-544 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | RIVERSIDE | NJ | |
| 856-545 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | LAUREL SPG | NJ | |
| 856-595 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | GLASSBORO | NJ | |
| 856-632 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | BEAVER BRK | NJ | |
| 856-649 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | WILLIAMSTN | NJ | |
| 856-741 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | LAUREL SPG | NJ | |
| 856-761 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | HADDONFLD | NJ | |
| 856-762 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | MARLTON | NJ | |
| 856-773 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | MERCHANTVL | NJ | |
| 856-793 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | MOORESTOWN | NJ | |
| 856-831 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CAMDEN | NJ | |
| 856-842 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | BLACKWOOD | NJ | |
| 856-864 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | RIVERTON | NJ | |
| 856-879 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | WOODBURY | NJ | |
| 856-946 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | COLLINGSWD | NJ | |
| 856-956 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ | 7134 | PITMAN | NJ | |
| 857-996 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BOSTON | MA | |
| 858-227 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | RNCHOSANFE | CA | |
| 858-228 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LA JOLLA | CA | |
| 858-244 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNDG LVTA | CA | |
| 858-348 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNDG MRMS | CA | |
| 858-352 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LA JOLLA | CA | |
| 858-362 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LA JOLLA | CA | |
| 858-366 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LA JOLLA | CA | |
| 858-373 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | LA JOLLA | CA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.