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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2023-06-02 | 409-268-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SPURGER | TX |
| 2023-06-02 | 409-278-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WARREN | TX |
| 2023-06-02 | 409-858-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WILDWOOD | TX |
| 2013-12-10 | 409-205-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SABINEPASS | TX |
| 2013-02-01 | 409-331-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WOODVILLE | TX |
| 2013-02-01 | 409-753-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | WESTBURY | TX |
| 2013-02-01 | 409-994-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BUNA | TX |
| 2012-11-12 | 409-238-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | ORANGE | TX |
| 2012-11-12 | 409-276-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | EVADALE | TX |
| 2012-01-13 | 409-684-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PT BOLIVAR | TX |
| 2012-01-13 | 409-752-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | CHINA | TX |
| 2011-12-29 | 409-202-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | JASPER | TX |
| 2011-12-27 | 409-237-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | NDLDPTNCHS | TX |
| 2011-12-27 | 409-373-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SILSBEE | TX |
| 2011-12-22 | 409-227-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LUMBERTON | TX |
| 2011-12-22 | 409-246-9XXX | 9000–9999 | Assigned | AT&T ENTERPRISES, LLC | 516C | KOUNTZE | TX |
| 2011-12-22 | 409-420-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | KIRBYVILLE | TX |
| 2011-12-22 | 409-433-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | PORTARTHUR | TX |
| 2011-12-22 | 409-445-2XXX | 2000–2999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SOUR LAKE | TX |
| 2011-12-22 | 409-681-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | VIDOR | TX |
| 2011-12-22 | 409-697-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BRIDGECITY | TX |
| 2011-12-22 | 409-745-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MAURICEVL | TX |
| 2011-12-22 | 409-746-4XXX | 4000–4999 | Assigned | AT&T ENTERPRISES, LLC | 516C | DEWEYVILLE | TX |
| 2011-12-22 | 409-794-8XXX | 8000–8999 | Assigned | AT&T ENTERPRISES, LLC | 516C | FANNETT | TX |
| 2011-12-22 | 409-796-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | LA BELLE | TX |
| 2011-12-16 | 409-263-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | SOUTHVIDOR | TX |
| 2011-01-07 | 409-359-3XXX | 3000–3999 | Assigned | AT&T ENTERPRISES, LLC | 516C | TXSCYMARQU | TX |
| 2005-12-19 | 409-443-5XXX | 5000–5999 | Assigned | AT&T ENTERPRISES, LLC | 516C | GALVESTON | TX |
| 2005-04-06 | 409-223-1XXX | 1000–1999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BEAUMONT | 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.