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 |
|---|---|---|---|---|---|
| 313-736 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | DETROITZN4 | MI | |
| 313-743 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | DETROITZN2 | MI | |
| 313-749 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | DETROITZN6 | MI | |
| 313-766 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | DETROITZN5 | MI | |
| 313-768 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | DETROITZN6 | MI | |
| 313-915 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | DETROITZN4 | MI | |
| 313-952 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | DETROITZN5 | MI | |
| 313-989 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MI | 7279 | DETROITZN1 | MI | |
| 314-236 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | ST LOUIS | MO | |
| 314-272 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | SAPPINGTON | MO | |
| 314-334 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | OAKVILLE | MO | |
| 314-372 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-387 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-392 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | CREVECOEUR | MO | |
| 314-431 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | SAPPINGTON | MO | |
| 314-433 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | MEHLVILLE | MO | |
| 314-442 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-468 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-471 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | KIRKWOOD | MO | |
| 314-472 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | SAPPINGTON | MO | |
| 314-473 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-513 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-527 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-674 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | CREVECOEUR | MO | |
| 314-748 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | SAPPINGTON | MO | |
| 314-754 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | ST LOUIS | MO | |
| 314-779 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | KIRKWOOD | MO | |
| 314-782 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | MEHLVILLE | MO | |
| 314-783 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | ST LOUIS | MO | |
| 314-785 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-786 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | CREVECOEUR | MO | |
| 314-787 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-792 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-800 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | KIRKWOOD | MO | |
| 314-801 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-802 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | ST LOUIS | MO | |
| 314-813 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-814 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | ST LOUIS | MO | |
| 314-815 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | MEHLVILLE | MO | |
| 314-817 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-819 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | CREVECOEUR | MO | |
| 314-856 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | KIRKWOOD | MO | |
| 314-874 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | LADUE | MO | |
| 314-885 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | MEHLVILLE | MO | |
| 314-898 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | ST LOUIS | MO | |
| 314-985 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MO | 7432 | CREVECOEUR | MO | |
| 315-619 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | HERKIMER | NY | |
| 317-564 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN | 7440 | CARMEL | IN | |
| 317-567 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN | 7440 | FISHERS | IN | |
| 317-572 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN | 7440 | FISHERS | IN |
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.