NumberResearchRecent thousands-block assignments
3 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, last 30 days — NPA 631
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2001-10-04 | 631-237-4XXX | 4000–4999 | Assigned | CABLEVISION LIGHTPATH, INC. - NY | 7126 | BRIDGEMPTN | NY |
| 2001-10-04 | 631-238-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | MONTAUK PT | NY |
| 2001-09-14 | 631-297-8XXX | 8000–8999 | Assigned | CABLEVISION LIGHTPATH, INC. - NY | 7126 | CENTRAISLP | NY |
| 2001-09-14 | 631-574-8XXX | 8000–8999 | Assigned | CABLEVISION LIGHTPATH, INC. - NY | 7126 | RIVERHEAD | NY |
| 2001-09-13 | 631-298-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | MATTITUCK | NY |
| 2001-08-28 | 631-259-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | SOUTHAMPTN | NY |
| 2001-08-28 | 631-267-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | AMAGANSETT | NY |
| 2001-08-28 | 631-323-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | ORIENT | NY |
| 2001-08-28 | 631-477-5XXX | 5000–5999 | Assigned | CABLEVISION LIGHTPATH, INC. - NY | 7126 | GREENPORT | NY |
| 2001-08-28 | 631-734-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | PECONIC | NY |
| 2001-08-28 | 631-765-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | SOUTHOLD | NY |
| 2001-08-28 | 631-899-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | SAG HARBOR | NY |
| 2001-08-28 | 631-907-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | E HAMPTON | NY |
| 2001-08-23 | 631-285-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | RONKONKOMA | NY |
| 2001-08-02 | 631-824-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | HUNTINGTON | NY |
| 2001-08-01 | 631-207-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | PATCHOGUE | NY |
| 2001-08-01 | 631-256-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | SAYVILLE | NY |
| 2001-08-01 | 631-382-8XXX | 8000–8999 | Assigned | PAETEC ITEL, LLC | 829J | SMITHTOWN | NY |
| 2001-08-01 | 631-792-1XXX | 1000–1999 | Assigned | PAETEC ITEL, LLC | 829J | BABYLON | NY |
| 2001-08-01 | 631-956-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | LINDENHST | NY |
| 2001-07-18 | 631-768-9XXX | 9000–9999 | Assigned | PAETEC ITEL, LLC | 829J | FARMINGDL | NY |
| 2001-07-10 | 631-899-0XXX | 0000–0999 | Assigned | PAETEC ITEL, LLC | 829J | SAG HARBOR | NY |
| 2001-07-10 | 631-907-3XXX | 3000–3999 | Assigned | CABLEVISION LIGHTPATH, INC. - NY | 7126 | E HAMPTON | NY |
| 2001-07-10 | 631-953-0XXX | 0000–0999 | Assigned | PAETEC ITEL, LLC | 829J | RIVERHEAD | NY |
| — | 631-414-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | FARMINGDL | NY |
| — | 631-486-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | W COMMACK | NY |
| — | 631-486-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | W COMMACK | NY |
| — | 631-486-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | W COMMACK | NY |
| — | 631-486-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | W COMMACK | NY |
| — | 631-486-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | W COMMACK | NY |
| — | 631-539-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | BABYLON | NY |
| — | 631-539-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | BABYLON | NY |
| — | 631-539-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | BABYLON | NY |
| — | 631-539-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | BABYLON | NY |
| — | 631-539-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | BABYLON | NY |
| — | 631-591-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | RIVERHEAD | NY |
| — | 631-591-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | RIVERHEAD | NY |
| — | 631-591-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | RIVERHEAD | NY |
| — | 631-591-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | RIVERHEAD | NY |
| — | 631-594-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | HAMPTNBAYS | NY |
| — | 631-594-2XXX | 2000–2999 | Assigned | CSC VOICE, LLC | 612K | HAMPTNBAYS | NY |
| — | 631-594-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | HAMPTNBAYS | NY |
| — | 631-647-4XXX | 4000–4999 | Assigned | CSC VOICE, LLC | 612K | BAY SHORE | NY |
| — | 631-647-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | BAY SHORE | NY |
| — | 631-647-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | BAY SHORE | NY |
| — | 631-647-8XXX | 8000–8999 | Assigned | CSC VOICE, LLC | 612K | BAY SHORE | NY |
| — | 631-647-9XXX | 9000–9999 | Assigned | CSC VOICE, LLC | 612K | BAY SHORE | NY |
| — | 631-648-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | RONKONKOMA | NY |
| — | 631-648-3XXX | 3000–3999 | Assigned | CSC VOICE, LLC | 612K | RONKONKOMA | NY |
| — | 631-648-7XXX | 7000–7999 | Assigned | CSC VOICE, LLC | 612K | RONKONKOMA | 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.