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 |
|---|---|---|---|---|---|
| 646-274 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-308 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-328 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-344 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN01 | NY | |
| 646-352 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-375 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-383 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-395 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-405 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-437 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-443 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-495 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN01 | NY | |
| 646-537 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-560 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-572 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-758 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-792 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-810 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-822 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-834 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-843 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-852 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-871 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-885 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-915 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-924 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-963 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY | |
| 646-981 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN01 | NY | |
| 650-226 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNCRL-BLMT | CA | |
| 650-227 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SAN MATEO | CA | |
| 650-228 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SSNFRNCSCO | CA | |
| 650-229 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LOS ALTOS | CA | |
| 650-230 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MT VIEW | CA | |
| 650-231 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MILLBRAE | CA | |
| 650-232 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNCRL-BLMT | CA | |
| 650-235 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SAN MATEO | CA | |
| 650-238 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SSNFRNCSCO | CA | |
| 650-263 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MOSS BEACH | CA | |
| 650-268 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PESCADERO | CA | |
| 650-275 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WOODSIDE | CA | |
| 650-319 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PALO ALTO | CA | |
| 650-362 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | REDWOOD CY | CA | |
| 650-388 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PALO ALTO | CA | |
| 650-389 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SAN MATEO | CA | |
| 650-403 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SAN MATEO | CA | |
| 650-412 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNCRL-BLMT | CA | |
| 650-425 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SAN MATEO | CA | |
| 650-426 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MT VIEW | CA | |
| 650-429 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | MT VIEW | CA | |
| 650-433 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PALO ALTO | CA |
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.