NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026
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.
Most active assignees, all time — NPA 631
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-04-19 | 631-824-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | HUNTINGTON | NY |
| 2018-04-11 | 631-832-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BAYPORT | NY |
| 2016-03-16 | 631-635-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BABYLON | NY |
| 2015-07-08 | 631-784-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | CENTRAISLP | NY |
| 2014-09-24 | 631-994-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BRENTWOOD | NY |
| 2014-04-03 | 631-519-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | E FIRE IS | NY |
| 2014-01-21 | 631-526-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BABYLON | NY |
| 2013-11-07 | 631-449-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BRENTWOOD | NY |
| 2013-08-27 | 631-337-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | SAYVILLE | NY |
| 2012-12-26 | 631-601-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BRENTWOOD | NY |
| 2012-02-21 | 631-496-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | SELDEN | NY |
| 2011-12-13 | 631-562-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | PATCHOGUE | NY |
| 2011-12-01 | 631-498-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | COLDSPGHBR | NY |
| 2011-09-08 | 631-352-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | SMITHTOWN | NY |
| 2011-03-30 | 631-699-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | SAYVILLE | NY |
| 2011-03-14 | 631-392-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | DEER PARK | NY |
| 2011-01-26 | 631-336-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BRENTWOOD | NY |
| 2010-10-27 | 631-533-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | CENTRAISLP | NY |
| 2010-04-15 | 631-609-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BRENTWOOD | NY |
| 2010-01-22 | 631-892-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BAY SHORE | NY |
| 2009-12-04 | 631-615-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | RONKONKOMA | NY |
| 2009-05-13 | 631-892-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BAY SHORE | NY |
| 2009-03-09 | 631-419-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BAYPORT | NY |
| 2008-09-04 | 631-237-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BRIDGEMPTN | NY |
| 2008-09-04 | 631-350-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | HUNTINGTON | NY |
| 2008-07-21 | 631-941-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | STONYBROOK | NY |
| 2008-05-12 | 631-925-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | NORTHPORT | NY |
| 2008-05-06 | 631-657-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | ATLANTIC | NY |
| 2008-05-06 | 631-801-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | EASTPORT | NY |
| 2008-05-06 | 631-993-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | COMMACK | NY |
| 2008-05-02 | 631-657-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | ATLANTIC | NY |
| 2008-04-17 | 631-618-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | YAPHANK | NY |
| 2008-04-17 | 631-686-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | ST JAMES | NY |
| 2008-04-17 | 631-973-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | KINGS PARK | NY |
| 2008-03-14 | 631-619-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | RONKONKOMA | NY |
| 2008-02-04 | 631-328-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BAY SHORE | NY |
| 2007-05-11 | 631-676-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | RONKONKOMA | NY |
| 2006-12-15 | 631-319-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | SAYVILLE | NY |
| 2006-07-31 | 631-548-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | RIVERHEAD | NY |
| 2006-07-27 | 631-206-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BAY SHORE | NY |
| 2006-07-12 | 631-702-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | SOUTHAMPTN | NY |
| 2006-04-11 | 631-602-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | SHELTER IS | NY |
| 2006-04-11 | 631-625-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | ORIENT | NY |
| 2006-03-31 | 631-604-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | E HAMPTON | NY |
| 2006-03-10 | 631-419-3XXX | 3000–3999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BAYPORT | NY |
| 2006-03-10 | 631-498-8XXX | 8000–8999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | COLDSPGHBR | NY |
| 2006-03-10 | 631-651-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | NORTHPORT | NY |
| 2006-03-10 | 631-862-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | ST JAMES | NY |
| 2006-03-02 | 631-223-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | HUNTINGTON | NY |
| 2006-03-02 | 631-259-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | SOUTHAMPTN | NY |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.