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
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2006-03-27 | 631-965-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | RIVERHEAD | NY |
| 2006-03-14 | 631-297-5XXX | 5000–5999 | Assigned | PAETEC ITEL, LLC | 829J | CENTRAISLP | 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 |
| 2006-03-06 | 631-780-6XXX | 6000–6999 | Assigned | CSC VOICE, LLC | 612K | SMITHTOWN | 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 |
| 2006-03-02 | 631-485-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | MIDLAND | NY |
| 2006-03-02 | 631-503-9XXX | 9000–9999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | CTRMORICHS | NY |
| 2006-03-02 | 631-709-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | WATER MILL | NY |
| 2006-03-02 | 631-731-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | AMAGANSETT | NY |
| 2006-03-02 | 631-876-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | SOUTHOLD | NY |
| 2006-03-02 | 631-887-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | HAMPTNBAYS | NY |
| 2006-03-02 | 631-938-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | PTJEFFERSN | NY |
| 2006-03-02 | 631-998-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | WESTHAMPTN | NY |
| 2006-02-23 | 631-354-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | MATTITUCK | NY |
| 2006-02-23 | 631-532-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | AMITYVILLE | NY |
| 2006-02-22 | 631-319-2XXX | 2000–2999 | Assigned | VERIZON NEW YORK, INC. | 9104 | SAYVILLE | NY |
| 2006-02-14 | 631-392-0XXX | 0000–0999 | Assigned | CSC VOICE, LLC | 612K | DEER PARK | NY |
| 2006-02-14 | 631-392-1XXX | 1000–1999 | Assigned | CSC VOICE, LLC | 612K | DEER PARK | NY |
| 2006-02-09 | 631-413-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SELDEN | NY |
| 2006-02-09 | 631-413-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SELDEN | NY |
| 2006-02-09 | 631-413-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SELDEN | NY |
| 2006-02-09 | 631-512-0XXX | 0000–0999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SELDEN | NY |
| 2006-02-09 | 631-512-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SELDEN | NY |
| 2006-02-09 | 631-512-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SELDEN | NY |
| 2006-02-09 | 631-512-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SELDEN | NY |
| 2006-02-02 | 631-946-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | SELDEN | NY |
| 2006-01-30 | 631-962-7XXX | 7000–7999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | FARMINGDL | NY |
| 2006-01-20 | 631-944-4XXX | 4000–4999 | Assigned | PAETEC ITEL, LLC | 829J | HUNTINGTON | NY |
| 2006-01-12 | 631-618-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | YAPHANK | NY |
| 2006-01-09 | 631-574-5XXX | 5000–5999 | Assigned | METROPCS, INC. | 5562 | RIVERHEAD | NY |
| 2006-01-06 | 631-870-9XXX | 9000–9999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | CENTRAISLP | NY |
| 2006-01-05 | 631-612-8XXX | 8000–8999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | BABYLON | NY |
| 2005-12-27 | 631-350-2XXX | 2000–2999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | HUNTINGTON | NY |
| 2005-12-21 | 631-547-3XXX | 3000–3999 | Assigned | CABLEVISION LIGHTPATH, INC. - NY | 7126 | HUNTINGTON | NY |
| 2005-12-16 | 631-873-1XXX | 1000–1999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | BRENTWOOD | NY |
| 2005-12-12 | 631-618-5XXX | 5000–5999 | Assigned | OMNIPOINT COMMUNICATIONS, INC. - NY | 6622 | YAPHANK | NY |
| 2005-12-09 | 631-238-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | MONTAUK PT | NY |
| 2005-12-09 | 631-291-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | BRENTWOOD | NY |
| 2005-12-09 | 631-503-6XXX | 6000–6999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | CTRMORICHS | NY |
| 2005-12-09 | 631-779-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | JAMESPORT | NY |
| 2005-12-08 | 631-323-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | ORIENT | NY |
| 2005-12-08 | 631-653-1XXX | 1000–1999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | QUOGUE | NY |
| 2005-12-08 | 631-706-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | STONYBROOK | NY |
| 2005-12-08 | 631-709-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | WATER MILL | NY |
| 2005-12-08 | 631-734-0XXX | 0000–0999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | PECONIC | NY |
| 2005-12-08 | 631-850-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | W COMMACK | 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.