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 |
|---|---|---|---|---|---|
| 405-415 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK | 7258 | OKLA CITY | OK | |
| 405-416 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK | 7258 | OKLA CITY | OK | |
| 405-506 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK | 7258 | BETHANY | OK | |
| 405-996 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK | 7258 | OKLA CITY | OK | |
| 408-212 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SUNNYVALE | CA | |
| 408-213 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS WEST | CA | |
| 408-215 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SUNNYVALE | CA | |
| 408-220 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SUNNYVALE | CA | |
| 408-222 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SUNNYVALE | CA | |
| 408-228 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS NORTH | CA | |
| 408-273 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNJS NORTH | CA | |
| 408-331 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SUNNYVALE | CA | |
| 408-340 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CAMPBELL | CA | |
| 408-346 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS WEST | CA | |
| 408-349 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SUNNYVALE | CA | |
| 408-350 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS WEST | CA | |
| 408-359 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SARATOGA | CA | |
| 408-367 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS WEST | CA | |
| 408-414 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS SOUTH | CA | |
| 408-416 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS NORTH | CA | |
| 408-424 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNJS NORTH | CA | |
| 408-484 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SARATOGA | CA | |
| 408-490 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNJS WEST | CA | |
| 408-519 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS NORTH | CA | |
| 408-533 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS WEST | CA | |
| 408-540 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CAMPBELL | CA | |
| 408-572 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS WEST | CA | |
| 408-582 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS NORTH | CA | |
| 408-583 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CAMPBELL | CA | |
| 408-597 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS NORTH | CA | |
| 408-636 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SUNNYVALE | CA | |
| 408-694 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS SOUTH | CA | |
| 408-765 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS WEST | CA | |
| 408-789 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SUNNYVALE | CA | |
| 408-790 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS WEST | CA | |
| 408-822 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SUNNYVALE | CA | |
| 408-856 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SNJS NORTH | CA | |
| 408-869 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS WEST | CA | |
| 408-875 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS NORTH | CA | |
| 408-876 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS NORTH | CA | |
| 408-878 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS WEST | CA | |
| 408-914 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS NORTH | CA | |
| 408-933 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SNJS NORTH | CA | |
| 408-990 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | SUNNYVALE | CA | |
| 409-225 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX | 7239 | BEAUMONT | TX | |
| 410-246 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | 7228 | BALTIMORE | MD | |
| 410-314 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | 7228 | ARBUTUS | MD | |
| 410-317 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | 7228 | ARGRGBSNIS | MD | |
| 410-401 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | 7228 | BRYNPKLNCM | MD | |
| 410-402 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD | 7228 | CATONSVL | MD |
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.