NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/18/2026
Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.
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Sep 2026
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| Assigned | Block | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2015-09-14 | 646-677-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN01 | NY |
| 2015-09-14 | 646-677-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN01 | NY |
| 2015-09-01 | 716-428-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WILLIAMSVL | NY |
| 2015-09-01 | 914-801-0XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | PLEASANTVL | NY |
| 2015-09-01 | 929-373-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN11 | NY |
| 2015-08-31 | 516-344-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NASSAUZN01 | NY |
| 2015-08-31 | 516-744-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NASSAUZN04 | NY |
| 2015-08-31 | 518-599-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ALBANY | NY |
| 2015-08-31 | 585-358-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | HENRIETTA | NY |
| 2015-08-31 | 631-350-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | HUNTINGTON | NY |
| 2015-08-20 | 929-397-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2015-08-20 | 929-397-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2015-08-20 | 929-397-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2015-08-20 | 929-397-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2015-08-14 | 845-648-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | MIDDLETOWN | NY |
| 2015-08-13 | 585-485-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | EROCHESTER | NY |
| 2015-08-07 | 585-417-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ROCHESTER | NY |
| 2015-08-07 | 929-441-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN07 | NY |
| 2015-08-06 | 315-928-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | SYRACUSE | NY |
| 2015-06-11 | 716-428-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WILLIAMSVL | NY |
| 2015-06-09 | 929-283-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2015-05-27 | 914-274-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WSCHSTZN02 | NY |
| 2015-04-23 | 516-447-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NASSAUZN07 | NY |
| 2015-04-07 | 929-372-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN10 | NY |
| 2015-03-13 | 315-538-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | MACEDON | NY |
| 2015-03-13 | 315-835-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WATERLOO | NY |
| 2015-03-13 | 518-554-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | TUPPERLAKE | NY |
| 2015-03-13 | 518-853-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | FONDA | NY |
| 2015-03-13 | 585-653-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ARCADE | NY |
| 2015-03-12 | 716-404-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | GRAND IS | NY |
| 2015-03-10 | 929-371-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN04 | NY |
| 2015-02-20 | 929-382-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2014-12-26 | 929-368-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN05 | NY |
| 2014-12-17 | 929-337-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2014-12-02 | 929-348-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN04 | NY |
| 2014-12-02 | 929-348-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN04 | NY |
| 2014-11-14 | 929-362-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN09 | NY |
| 2014-11-12 | 845-592-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | HOPEWLLJCT | NY |
| 2014-11-12 | 845-871-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | RHINEBECK | NY |
| 2014-11-10 | 518-930-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | SCHENCTADY | NY |
| 2014-10-03 | 845-762-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NEWBURGH | NY |
| 2014-09-18 | 845-827-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | HIGHLANDML | NY |
| 2014-08-15 | 315-704-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | AUBURN | NY |
| 2014-08-11 | 929-600-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN12 | NY |
| 2014-08-04 | 716-371-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NIAGARAFLS | NY |
| 2014-07-21 | 929-284-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN15 | NY |
| 2014-07-11 | 929-283-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2014-07-11 | 929-283-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2014-07-07 | 518-675-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ALTAMONT | NY |
| 2014-06-27 | 929-285-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN03 | NY |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/18/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.