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 509
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2020-04-28 | 509-824-8XXX | 8000–8999 | Assigned | QWEST CORPORATION | 9638 | SPOKANE | WA |
| 2015-12-31 | 509-897-2XXX | 2000–2999 | Assigned | QWEST CORPORATION | 9638 | WALLAWALLA | WA |
| 2015-12-31 | 509-897-3XXX | 3000–3999 | Assigned | QWEST CORPORATION | 9638 | WALLAWALLA | WA |
| 2015-12-31 | 509-897-5XXX | 5000–5999 | Assigned | QWEST CORPORATION | 9638 | WALLAWALLA | WA |
| 2015-12-31 | 509-897-8XXX | 8000–8999 | Assigned | QWEST CORPORATION | 9638 | WALLAWALLA | WA |
| 2015-08-19 | 509-685-4XXX | 4000–4999 | Assigned | QWEST CORPORATION | 9638 | COLVILLE | WA |
| 2012-04-10 | 509-724-4XXX | 4000–4999 | Assigned | QWEST CORPORATION | 9638 | SPOKANE | WA |
| 2011-10-19 | 509-724-5XXX | 5000–5999 | Assigned | QWEST CORPORATION | 9638 | SPOKANE | WA |
| 2010-06-04 | 509-828-1XXX | 1000–1999 | Assigned | QWEST CORPORATION | 9638 | SPOKANE | WA |
| 2010-06-04 | 509-828-6XXX | 6000–6999 | Assigned | QWEST CORPORATION | 9638 | SPOKANE | WA |
| 2009-09-23 | 509-340-5XXX | 5000–5999 | Assigned | QWEST CORPORATION | 9638 | SPOKANE | WA |
| 2009-06-29 | 509-416-7XXX | 7000–7999 | Assigned | QWEST CORPORATION | 9638 | PASCO | WA |
| 2009-06-29 | 509-416-8XXX | 8000–8999 | Assigned | QWEST CORPORATION | 9638 | PASCO | WA |
| 2008-03-27 | 509-313-0XXX | 0000–0999 | Assigned | QWEST CORPORATION | 9638 | SPOKANE | WA |
| 2008-03-27 | 509-313-1XXX | 1000–1999 | Assigned | QWEST CORPORATION | 9638 | SPOKANE | WA |
| 2008-03-27 | 509-313-2XXX | 2000–2999 | Assigned | QWEST CORPORATION | 9638 | SPOKANE | WA |
| 2008-03-27 | 509-313-3XXX | 3000–3999 | Assigned | QWEST CORPORATION | 9638 | SPOKANE | WA |
| 2008-03-27 | 509-313-4XXX | 4000–4999 | Assigned | QWEST CORPORATION | 9638 | SPOKANE | WA |
| 2008-03-27 | 509-313-5XXX | 5000–5999 | Assigned | QWEST CORPORATION | 9638 | SPOKANE | WA |
| 2008-03-27 | 509-313-6XXX | 6000–6999 | Assigned | QWEST CORPORATION | 9638 | SPOKANE | WA |
| 2008-03-27 | 509-313-7XXX | 7000–7999 | Assigned | QWEST CORPORATION | 9638 | SPOKANE | WA |
| 2008-03-27 | 509-313-8XXX | 8000–8999 | Assigned | QWEST CORPORATION | 9638 | SPOKANE | WA |
| 2008-03-27 | 509-313-9XXX | 9000–9999 | Assigned | QWEST CORPORATION | 9638 | SPOKANE | WA |
| 2008-03-24 | 509-823-2XXX | 2000–2999 | Assigned | QWEST CORPORATION | 9638 | YAKIMA | WA |
| 2007-11-12 | 509-413-4XXX | 4000–4999 | Assigned | QWEST CORPORATION | 9638 | SPOKANE | WA |
| 2007-11-12 | 509-413-5XXX | 5000–5999 | Assigned | QWEST CORPORATION | 9638 | SPOKANE | WA |
| 2005-10-18 | 509-542-5XXX | 5000–5999 | Assigned | QWEST CORPORATION | 9638 | PASCO | WA |
| 2005-02-24 | 509-793-9XXX | 9000–9999 | Assigned | QWEST CORPORATION | 9638 | MOSES LAKE | WA |
| 2004-11-15 | 509-793-2XXX | 2000–2999 | Assigned | QWEST CORPORATION | 9638 | MOSES LAKE | WA |
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.