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 |
|---|---|---|---|---|---|
| 734-452 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | LIVONIA | MI | |
| 734-456 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | PLYMOUTH | MI | |
| 734-468 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | PLYMOUTH | MI | |
| 734-469 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | LIVONIA | MI | |
| 734-512 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | TRENTON | MI | |
| 734-518 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | LIVONIA | MI | |
| 734-521 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | LIVONIA | MI | |
| 734-530 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | WYANDOTTE | MI | |
| 734-531 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | ANN ARBOR | MI | |
| 734-535 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | FLAT ROCK | MI | |
| 734-543 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | NEW BOSTON | MI | |
| 734-585 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | ANN ARBOR | MI | |
| 734-621 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | MONROE | MI | |
| 734-627 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | CHELSEA | MI | |
| 734-628 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | MILAN | MI | |
| 734-629 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | WAYNE | MI | |
| 734-661 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | ANN ARBOR | MI | |
| 734-672 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | TRENTON | MI | |
| 734-742 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | LIVONIA | MI | |
| 734-743 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | LIVONIA | MI | |
| 734-744 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | LIVONIA | MI | |
| 734-758 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | FLAT ROCK | MI | |
| 734-784 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | ROMULUS | MI | |
| 734-823 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | DUNDEE | MI | |
| 734-839 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | WHITMORELK | MI | |
| 734-869 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | CARLETON | MI | |
| 734-917 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | ERIE | MI | |
| 734-922 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | ANN ARBOR | MI | |
| 734-928 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | PLYMOUTH | MI | |
| 734-939 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | ROMULUS | MI | |
| 734-985 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | YPSILANTI | MI | |
| 734-991 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | WYANDOTTE | MI | |
| 740-457 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | STEUBENVL | OH | |
| 740-888 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7443 | CHESHIRCTR | OH | |
| 740-951 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | PATASKALA | OH | |
| 757-278 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - VA | 7238 | NRFOLKZON2 | VA | |
| 760-400 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | OCSD OCSD | CA | |
| 760-450 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | OCSD OCSD | CA | |
| 760-472 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | OCSD PDTN | CA | |
| 760-496 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | OCSD CRLS | CA | |
| 760-520 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ESCONDIDO | CA | |
| 760-536 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | VISTA | CA | |
| 760-546 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ESCONDIDO | CA | |
| 760-557 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ENCINITAS | CA | |
| 760-560 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | VISTA | CA | |
| 760-566 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SAN MARCOS | CA | |
| 760-666 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | VISTA | CA | |
| 760-682 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SAN MARCOS | CA | |
| 760-704 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ENCINITAS | CA | |
| 760-705 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | ESCONDIDO | 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.