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 |
|---|---|---|---|---|---|
| 2024-09-12 | 716-781 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | JAMESTOWN | NY |
| 2024-06-05 | 585-751 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | MT MORRIS | NY |
| 2024-02-28 | 585-725 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | MEDINA | NY |
| 2024-02-28 | 716-516 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | YOUNGSTOWN | NY |
| 2022-08-12 | 680-244 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | SYRACUSE | NY |
| 2022-05-11 | 929-623 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN10 | NY |
| 2021-11-08 | 607-446 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | CHENANGBDG | NY |
| 2021-02-02 | 929-572 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2020-06-24 | 929-552 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2020-06-24 | 929-553 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN09 | NY |
| 2019-03-05 | 914-369 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WSCHSTZN01 | NY |
| 2019-02-19 | 929-514 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN08 | NY |
| 2018-06-26 | 929-479 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN07 | NY |
| 2018-04-09 | 718-500 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2018-03-23 | 315-275 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | UTICA | NY |
| 2018-03-16 | 914-685 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | YORKTN HTS | NY |
| 2017-10-10 | 929-458 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN03 | NY |
| 2017-05-26 | 914-229 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WSCHSTZN03 | NY |
| 2017-03-28 | 929-452 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN03 | NY |
| 2016-08-15 | 929-398 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN10 | NY |
| 2016-08-02 | 315-936 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | MEXICO | NY |
| 2016-03-30 | 929-303 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN03 | NY |
| 2016-01-22 | 646-954 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN01 | NY |
| 2015-11-12 | 518-840 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WARRENSBG | NY |
| 2015-09-11 | 646-677 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN01 | NY |
| 2015-08-19 | 929-397 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2015-04-10 | 845-792 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | PIERMONT | NY |
| 2015-03-09 | 929-371 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN04 | NY |
| 2015-02-19 | 929-382 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2014-12-23 | 929-368 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN05 | NY |
| 2014-12-01 | 929-348 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN04 | NY |
| 2014-11-13 | 929-362 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN09 | NY |
| 2014-07-18 | 929-284 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN15 | NY |
| 2014-07-10 | 929-283 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2014-06-26 | 929-285 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN03 | NY |
| 2014-04-28 | 631-637 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BRENTWOOD | NY |
| 2014-04-28 | 929-275 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN07 | NY |
| 2014-04-04 | 929-281 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN04 | NY |
| 2014-04-04 | 929-324 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2014-03-10 | 585-449 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BELMONT | NY |
| 2014-01-13 | 631-652 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | SMITHTOWN | NY |
| 2014-01-13 | 929-265 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN03 | NY |
| 2013-12-13 | 929-258 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2013-07-05 | 845-366 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | HYDE PARK | NY |
| 2013-03-27 | 929-252 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2013-03-15 | 929-227 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN03 | NY |
| 2013-02-18 | 917-966 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2012-10-11 | 917-634 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN04 | NY |
| 2012-06-11 | 585-397 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ROCHESTER | NY |
| 2012-05-14 | 518-417 | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ALBANY | NY |
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.