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 |
|---|---|---|---|---|---|
| 2007-03-22 | 631-638-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | STONYBROOK | NY |
| 2007-03-22 | 631-787-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | CENTRAISLP | NY |
| 2007-03-22 | 914-355-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WSCHSTZN03 | NY |
| 2007-01-22 | 347-227-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2007-01-16 | 347-272-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN06 | NY |
| 2007-01-02 | 631-319-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | SAYVILLE | NY |
| 2007-01-02 | 845-920-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | PEARLRIVER | NY |
| 2006-12-18 | 631-729-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ATLANTIC | NY |
| 2006-12-07 | 845-809-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | COLDSPRING | NY |
| 2006-12-07 | 845-839-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | HIGHLD FLS | NY |
| 2006-12-07 | 914-292-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | BEDFORDVLG | NY |
| 2006-12-07 | 914-401-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | KATONAH | NY |
| 2006-12-06 | 631-228-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | SHOREHAM | NY |
| 2006-10-12 | 347-803-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN04 | NY |
| 2006-10-12 | 347-803-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN04 | NY |
| 2006-10-03 | 516-682-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NASSAUZN07 | NY |
| 2006-08-22 | 845-523-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | CONGERS | NY |
| 2006-08-22 | 914-810-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | CRTNONHDSN | NY |
| 2006-08-08 | 347-649-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN08 | NY |
| 2006-07-13 | 845-507-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NANUET | NY |
| 2006-05-15 | 315-207-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | OSWEGO | NY |
| 2006-05-15 | 315-237-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | AUBURN | NY |
| 2006-05-12 | 716-730-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WILLIAMSVL | NY |
| 2006-05-12 | 716-730-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WILLIAMSVL | NY |
| 2006-05-12 | 716-730-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | WILLIAMSVL | NY |
| 2006-04-18 | 518-226-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | SARATOGSPG | NY |
| 2006-04-18 | 518-268-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | TROY | NY |
| 2006-04-18 | 518-314-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | PLATTSBG | NY |
| 2006-04-18 | 518-362-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | COLONIE | NY |
| 2006-04-18 | 518-480-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | GLENSFALLS | NY |
| 2006-04-18 | 607-658-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | ENDICOTT | NY |
| 2006-04-18 | 845-765-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | BEACON | NY |
| 2006-04-13 | 315-271-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | ROME | NY |
| 2006-04-13 | 716-926-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | HAMBURG | NY |
| 2006-03-21 | 914-302-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | YORKTN HTS | NY |
| 2006-03-21 | 914-600-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7650 | BIRCHWOOD | NY |
| 2006-01-30 | 631-962-7XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | FARMINGDL | NY |
| 2005-12-27 | 631-350-2XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | HUNTINGTON | NY |
| 2005-11-15 | 347-578-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN07 | NY |
| 2005-11-15 | 347-578-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN07 | NY |
| 2005-11-15 | 347-578-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN07 | NY |
| 2005-11-08 | 631-760-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | HUNTINGTON | NY |
| 2005-11-07 | 631-209-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | SHOREHAM | NY |
| 2005-11-07 | 845-848-1XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | PIERMONT | NY |
| 2005-11-04 | 347-230-5XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN13 | NY |
| 2005-11-04 | 347-230-6XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN13 | NY |
| 2005-11-04 | 347-230-8XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN13 | NY |
| 2005-11-04 | 347-548-3XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN12 | NY |
| 2005-11-04 | 347-548-9XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | NWYRCYZN12 | NY |
| 2005-11-04 | 631-498-4XXX | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | COLDSPGHBR | 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.