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 |
|---|---|---|---|---|---|
| 2001-05-08 | 252-656 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC | 7835 | ATLANTIC | NC |
| 2001-05-08 | 910-629 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC | 7835 | MAYSVILLE | NC |
| 2001-05-07 | 812-502 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN | 7440 | BICKNELL | IN |
| 2001-05-03 | 631-418 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | HUNTINGTON | NY |
| 2001-04-26 | 419-556 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7158 | GIBSONBURG | OH |
| 2001-04-26 | 419-807 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7158 | BOWLNGGREN | OH |
| 2001-04-24 | 425-278 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BELLEVUE | WA |
| 2001-04-24 | 425-460 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BELLEVUE | WA |
| 2001-04-24 | 425-463 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BELLEVUE | WA |
| 2001-04-24 | 925-579 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | LIVERMORE | CA |
| 2001-04-24 | 925-852 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CONCORD | CA |
| 2001-04-23 | 240-427 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WALDORF | MD |
| 2001-04-23 | 240-560 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WSNGTNZN12 | MD |
| 2001-04-23 | 760-692 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | OCSD CRLS | CA |
| 2001-04-17 | 831-319 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 7240 | WATSONVL | CA |
| 2001-04-16 | 909-503 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | COLTON | CA |
| 2001-04-13 | 562-616 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CMTN CMTN | CA |
| 2001-04-10 | 201-762 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CRAGMERE | NJ |
| 2001-04-03 | 212-994 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NWYRCYZN01 | NY |
| 2001-04-03 | 484-765 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | ALLENTOWN | PA |
| 2001-04-03 | 914-579 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | PLEASANTVL | NY |
| 2001-03-29 | 253-214 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA | 7274 | DES MOINES | WA |
| 2001-03-29 | 253-234 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | KENT | WA |
| 2001-03-29 | 949-579 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | IRVINE | CA |
| 2001-03-27 | 774-568 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | EASTON | MA |
| 2001-03-27 | 774-893 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | DOVER | MA |
| 2001-03-27 | 857-524 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | SO BOSTON | MA |
| 2001-03-27 | 857-559 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BRIGHTON | MA |
| 2001-03-27 | 857-588 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CHARLESTN | MA |
| 2001-03-27 | 857-728 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | JAMAICA PL | MA |
| 2001-03-26 | 614-355 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH | 7836 | COLUMBUS | OH |
| 2001-03-23 | 201-642 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | CRAGMERE | NJ |
| 2001-03-23 | 201-961 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | RAMSEY | NJ |
| 2001-03-22 | 914-586 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | WSCHSTZN07 | NY |
| 2001-03-21 | 971-215 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BEAVERTON | OR |
| 2001-03-20 | 206-400 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - WA | 7274 | DES MOINES | WA |
| 2001-03-20 | 412-356 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | PTGSBNZN16 | PA |
| 2001-03-20 | 425-329 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | HALLS LAKE | WA |
| 2001-03-20 | 774-430 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NORTON | MA |
| 2001-03-20 | 774-516 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | EBRIDGEWTR | MA |
| 2001-03-20 | 774-961 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TAUNTON | MA |
| 2001-03-20 | 857-598 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | MILTON | MA |
| 2001-03-20 | 857-816 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WINTHROP | MA |
| 2001-03-19 | 703-649 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | TRIANGLE | VA |
| 2001-03-19 | 774-306 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | NO ATTLEBO | MA |
| 2001-03-19 | 774-670 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | WORCESTER | MA |
| 2001-03-19 | 914-487 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | OSSINING | NY |
| 2001-03-19 | 914-752 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | MOUNTKISCO | NY |
| 2001-03-19 | 978-600 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BILLERICA | MA |
| 2001-03-16 | 971-214 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC | 7229 | BEAVERTON | OR |
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.