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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| Assigned | Block | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|
| 2010-05-27 | 917-460-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN12 | NY |
| 2010-03-30 | 347-549-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN07 | NY |
| 2010-03-26 | 347-640-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN04 | NY |
| 2010-03-24 | 347-566-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN10 | NY |
| 2010-03-10 | 516-539-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NASSAUZN05 | NY |
| 2010-03-09 | 845-207-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BREWSTER | NY |
| 2010-03-09 | 845-553-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | HAVERSTRAW | NY |
| 2010-03-09 | 914-219-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ARMONK VLG | NY |
| 2010-01-29 | 631-318-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | AMAGANSETT | NY |
| 2009-12-10 | 845-470-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | TUXEDO | NY |
| 2009-11-25 | 607-590-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | HORNELL | NY |
| 2009-11-24 | 518-304-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | SARANAC LK | NY |
| 2009-11-04 | 516-247-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NASSAUZN05 | NY |
| 2009-10-19 | 585-282-0XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | FAIRPORT | NY |
| 2009-10-19 | 585-282-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | FAIRPORT | NY |
| 2009-10-19 | 585-282-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | FAIRPORT | NY |
| 2009-10-19 | 585-282-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | FAIRPORT | NY |
| 2009-10-19 | 585-282-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | FAIRPORT | NY |
| 2009-10-19 | 585-282-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | FAIRPORT | NY |
| 2009-10-19 | 716-529-0XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WILLIAMSVL | NY |
| 2009-10-19 | 716-529-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WILLIAMSVL | NY |
| 2009-10-19 | 716-529-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WILLIAMSVL | NY |
| 2009-10-19 | 716-529-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WILLIAMSVL | NY |
| 2009-10-13 | 585-348-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | EROCHESTER | NY |
| 2009-10-13 | 585-348-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | EROCHESTER | NY |
| 2009-10-13 | 585-348-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | EROCHESTER | NY |
| 2009-10-13 | 585-348-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | EROCHESTER | NY |
| 2009-10-13 | 716-343-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | TONAWANDA | NY |
| 2009-10-13 | 716-535-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | TONAWANDA | NY |
| 2009-10-12 | 315-484-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | SYRACUSE | NY |
| 2009-10-01 | 585-456-0XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ROCHESTER | NY |
| 2009-10-01 | 585-456-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ROCHESTER | NY |
| 2009-10-01 | 585-456-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ROCHESTER | NY |
| 2009-10-01 | 716-279-0XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BUFFALO | NY |
| 2009-10-01 | 716-279-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BUFFALO | NY |
| 2009-10-01 | 716-279-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BUFFALO | NY |
| 2009-10-01 | 716-279-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BUFFALO | NY |
| 2009-10-01 | 716-279-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BUFFALO | NY |
| 2009-09-28 | 585-625-0XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ROCHESTER | NY |
| 2009-09-28 | 585-625-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ROCHESTER | NY |
| 2009-09-28 | 585-625-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ROCHESTER | NY |
| 2009-09-28 | 585-625-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ROCHESTER | NY |
| 2009-09-28 | 585-625-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ROCHESTER | NY |
| 2009-09-28 | 716-242-0XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BUFFALO | NY |
| 2009-09-28 | 716-242-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BUFFALO | NY |
| 2009-09-28 | 716-242-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BUFFALO | NY |
| 2009-09-28 | 716-242-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BUFFALO | NY |
| 2009-09-28 | 716-242-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BUFFALO | NY |
| 2009-09-01 | 631-412-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | LINDENHST | NY |
| 2009-08-27 | 845-570-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NEW CITY | 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.