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 |
|---|---|---|---|---|---|
| 978-383 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TOWNSEND | MA | |
| 978-389 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BERLIN | MA | |
| 978-414 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SALEM | MA | |
| 978-418 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LOWELL | MA | |
| 978-450 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MAYNARD | MA | |
| 978-477 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | W NEWBURY | MA | |
| 978-522 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BEVERLY | MA | |
| 978-540 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LITTLETON | MA | |
| 978-560 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DANVERS | MA | |
| 978-565 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SALEM | MA | |
| 978-606 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LOWELL | MA | |
| 978-639 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SUDBURY | MA | |
| 978-642 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WILMINGTON | MA | |
| 978-655 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LAWRENCE | MA | |
| 978-699 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ANDOVER | MA | |
| 978-716 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DANVERS | MA | |
| 978-719 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ANDOVER | MA | |
| 978-737 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WILMINGTON | MA | |
| 978-747 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LAWRENCE | MA | |
| 978-816 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BEVERLY | MA | |
| 978-817 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PEABODY | MA | |
| 978-824 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ANDOVER | MA | |
| 978-832 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SALEM | MA | |
| 978-848 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LOWELL | MA | |
| 978-849 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ACTON | MA | |
| 978-854 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PEABODY | MA | |
| 978-856 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LOWELL | MA | |
| 978-901 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BILLERICA | MA | |
| 978-905 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LOWELL | MA | |
| 978-907 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DANVERS | MA | |
| 978-909 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WILMINGTON | MA | |
| 978-918 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LAWRENCE | MA | |
| 978-926 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TYNGSBORO | MA | |
| 978-932 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BILLERICA | MA | |
| 978-945 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HAVERHILL | MA | |
| 978-964 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BILLERICA | MA | |
| 978-981 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SALEM | MA | |
| 978-983 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LAWRENCE | MA | |
| 978-997 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NEWBURYPT | MA | |
| 984-210 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC | 7835 | DURHAM | NC | |
| 984-216 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC | 7835 | DURHAM | NC |
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.