NumberResearchRecent thousands-block assignments
0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026
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 512
New assignments by month
Sep 2026
Aug 2026
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Jun 2026
May 2026
Apr 2026
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Dec 2025
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2014-01-13 | 512-676-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2012-09-20 | 512-564-2XXX | 2000–2999 | Assigned | SOUTHWESTERN BELL | 9533 | LAMPASAS | TX |
| 2012-04-11 | 512-654-0XXX | 0000–0999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2012-04-11 | 512-654-1XXX | 1000–1999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2012-04-11 | 512-654-2XXX | 2000–2999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2012-04-11 | 512-654-3XXX | 3000–3999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2012-04-11 | 512-654-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2012-04-11 | 512-654-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2012-04-11 | 512-654-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2012-04-11 | 512-654-7XXX | 7000–7999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2012-04-11 | 512-654-8XXX | 8000–8999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2012-04-11 | 512-654-9XXX | 9000–9999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2012-04-11 | 512-655-0XXX | 0000–0999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2012-04-11 | 512-655-1XXX | 1000–1999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2011-10-28 | 512-571-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2010-08-04 | 512-578-0XXX | 0000–0999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2010-08-04 | 512-578-1XXX | 1000–1999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2010-08-04 | 512-578-2XXX | 2000–2999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2010-08-04 | 512-578-3XXX | 3000–3999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2010-08-04 | 512-578-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2010-08-04 | 512-578-7XXX | 7000–7999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2009-07-28 | 512-981-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2009-06-19 | 512-549-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | BASTROP | TX |
| 2008-12-04 | 512-772-7XXX | 7000–7999 | Assigned | SOUTHWESTERN BELL | 9533 | BASTROP | TX |
| 2008-10-06 | 512-379-3XXX | 3000–3999 | Assigned | SOUTHWESTERN BELL | 9533 | LEANDER | TX |
| 2002-11-01 | 512-564-1XXX | 1000–1999 | Assigned | SOUTHWESTERN BELL | 9533 | LAMPASAS | TX |
| 2002-10-18 | 512-697-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2002-10-18 | 512-697-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2002-05-16 | 512-586-2XXX | 2000–2999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2002-01-16 | 512-300-2XXX | 2000–2999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2001-10-23 | 512-670-1XXX | 1000–1999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2001-10-23 | 512-670-3XXX | 3000–3999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2001-08-02 | 512-228-3XXX | 3000–3999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2001-06-18 | 512-233-3XXX | 3000–3999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2001-06-18 | 512-233-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2001-03-12 | 512-533-2XXX | 2000–2999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2001-03-12 | 512-533-3XXX | 3000–3999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2001-03-12 | 512-533-4XXX | 4000–4999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2001-03-12 | 512-533-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2001-03-12 | 512-533-7XXX | 7000–7999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2001-03-12 | 512-533-8XXX | 8000–8999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2001-03-12 | 512-533-9XXX | 9000–9999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2001-01-29 | 512-782-1XXX | 1000–1999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2001-01-29 | 512-782-3XXX | 3000–3999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2001-01-29 | 512-782-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2001-01-29 | 512-782-6XXX | 6000–6999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2001-01-29 | 512-782-7XXX | 7000–7999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2000-10-16 | 512-670-5XXX | 5000–5999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2000-09-15 | 512-854-0XXX | 0000–0999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
| 2000-09-15 | 512-854-1XXX | 1000–1999 | Assigned | SOUTHWESTERN BELL | 9533 | AUSTIN | TX |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.