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 409
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 |
|---|---|---|---|---|---|---|---|
| 2018-11-16 | 409-812-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2016-09-20 | 409-240-3XXX | 3000–3999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2016-09-20 | 409-240-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2016-09-20 | 409-240-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2016-09-20 | 409-240-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2016-09-20 | 409-240-7XXX | 7000–7999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2016-09-20 | 409-240-8XXX | 8000–8999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2013-06-18 | 409-205-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | SABINEPASS | TX |
| 2012-12-14 | 409-971-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | SABINEPASS | TX |
| 2010-08-04 | 409-236-0XXX | 0000–0999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2010-08-04 | 409-236-1XXX | 1000–1999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2010-08-04 | 409-236-2XXX | 2000–2999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2010-08-04 | 409-236-3XXX | 3000–3999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2010-08-04 | 409-236-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2010-08-04 | 409-236-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2010-08-04 | 409-236-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2010-08-04 | 409-236-7XXX | 7000–7999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2010-08-04 | 409-236-8XXX | 8000–8999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2010-08-04 | 409-236-9XXX | 9000–9999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2010-05-05 | 409-761-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | GALVESTON | TX |
| 2008-10-08 | 409-434-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2008-08-26 | 409-989-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | PORTARTHUR | TX |
| 2008-02-21 | 409-632-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | GALVESTON | TX |
| 2008-02-19 | 409-632-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | GALVESTON | TX |
| 2007-10-29 | 409-984-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | PORTARTHUR | TX |
| 2007-08-09 | 409-924-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2006-07-27 | 409-617-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2006-07-27 | 409-617-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2006-07-27 | 409-617-7XXX | 7000–7999 | Assigned | SOUTHWESTERN BELL | 9533 | BEAUMONT | TX |
| 2005-03-16 | 409-853-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | NDLDPTNCHS | TX |
| 2002-10-01 | 409-266-0XXX | 0000–0999 | Assigned | SOUTHWESTERN BELL | 9533 | GALVESTON | TX |
| 2002-10-01 | 409-266-1XXX | 1000–1999 | Assigned | SOUTHWESTERN BELL | 9533 | GALVESTON | TX |
| 2002-10-01 | 409-266-2XXX | 2000–2999 | Assigned | SOUTHWESTERN BELL | 9533 | GALVESTON | TX |
| 2002-10-01 | 409-266-3XXX | 3000–3999 | Assigned | SOUTHWESTERN BELL | 9533 | GALVESTON | TX |
| 2002-10-01 | 409-266-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | GALVESTON | TX |
| 2002-10-01 | 409-266-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | GALVESTON | TX |
| 2002-10-01 | 409-266-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | GALVESTON | TX |
| 2002-10-01 | 409-266-7XXX | 7000–7999 | Assigned | SOUTHWESTERN BELL | 9533 | GALVESTON | TX |
| 2002-10-01 | 409-266-8XXX | 8000–8999 | Assigned | SOUTHWESTERN BELL | 9533 | GALVESTON | TX |
| 2002-10-01 | 409-266-9XXX | 9000–9999 | Assigned | SOUTHWESTERN BELL | 9533 | GALVESTON | TX |
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.