NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

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 360
QWEST CORPORATION 49
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
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2018-04-24 360-585-3XXX 3000–3999Assigned QWEST CORPORATION 9638 CRYSTAL MT WA
2016-01-06 360-745-3XXX 3000–3999Assigned QWEST CORPORATION 9638 PORTLUDLOW WA
2015-05-11 360-729-8XXX 8000–8999Assigned QWEST CORPORATION 9638 VANCOUVER WA
2015-03-27 360-729-4XXX 4000–4999Assigned QWEST CORPORATION 9638 VANCOUVER WA
2015-02-09 360-778-5XXX 5000–5999Assigned QWEST CORPORATION 9638 WHATCOMCTY WA
2015-02-09 360-778-6XXX 6000–6999Assigned QWEST CORPORATION 9638 WHATCOMCTY WA
2013-04-11 360-729-3XXX 3000–3999Assigned QWEST CORPORATION 9638 VANCOUVER WA
2012-02-29 360-729-2XXX 2000–2999Assigned QWEST CORPORATION 9638 VANCOUVER WA
2011-12-27 360-729-1XXX 1000–1999Assigned QWEST CORPORATION 9638 VANCOUVER WA
2010-07-01 360-747-5XXX 5000–5999Assigned QWEST CORPORATION 9638 LONGVIEW WA
2009-10-22 360-524-8XXX 8000–8999Assigned QWEST CORPORATION 9638 VANCOUVER WA
2009-04-01 360-500-4XXX 4000–4999Assigned QWEST CORPORATION 9638 ABERDEEN WA
2009-02-02 360-353-7XXX 7000–7999Assigned QWEST CORPORATION 9638 LONGVIEW WA
2008-11-06 360-827-6XXX 6000–6999Assigned QWEST CORPORATION 9638 CENTRALIA WA
2008-11-06 360-827-7XXX 7000–7999Assigned QWEST CORPORATION 9638 CENTRALIA WA
2008-11-06 360-827-8XXX 8000–8999Assigned QWEST CORPORATION 9638 CENTRALIA WA
2008-07-03 360-744-0XXX 0000–0999Assigned QWEST CORPORATION 9638 BREMERTON WA
2008-07-03 360-744-1XXX 1000–1999Assigned QWEST CORPORATION 9638 BREMERTON WA
2008-07-03 360-744-2XXX 2000–2999Assigned QWEST CORPORATION 9638 BREMERTON WA
2008-07-03 360-744-3XXX 3000–3999Assigned QWEST CORPORATION 9638 BREMERTON WA
2008-07-03 360-744-4XXX 4000–4999Assigned QWEST CORPORATION 9638 BREMERTON WA
2008-07-03 360-744-5XXX 5000–5999Assigned QWEST CORPORATION 9638 BREMERTON WA
2008-07-03 360-744-6XXX 6000–6999Assigned QWEST CORPORATION 9638 BREMERTON WA
2008-07-03 360-744-7XXX 7000–7999Assigned QWEST CORPORATION 9638 BREMERTON WA
2008-07-03 360-744-8XXX 8000–8999Assigned QWEST CORPORATION 9638 BREMERTON WA
2008-07-03 360-744-9XXX 9000–9999Assigned QWEST CORPORATION 9638 BREMERTON WA
2008-06-12 360-383-3XXX 3000–3999Assigned QWEST CORPORATION 9638 WHATCOMCTY WA
2008-06-12 360-383-4XXX 4000–4999Assigned QWEST CORPORATION 9638 WHATCOMCTY WA
2007-11-12 360-778-7XXX 7000–7999Assigned QWEST CORPORATION 9638 WHATCOMCTY WA
2007-11-12 360-778-8XXX 8000–8999Assigned QWEST CORPORATION 9638 WHATCOMCTY WA
2007-05-02 360-582-4XXX 4000–4999Assigned QWEST CORPORATION 9638 PT ANGELES WA
2007-01-05 360-252-3XXX 3000–3999Assigned QWEST CORPORATION 9638 OLYMPIA WA
2007-01-05 360-718-4XXX 4000–4999Assigned QWEST CORPORATION 9638 VANCOUVER WA
2005-09-08 360-487-7XXX 7000–7999Assigned QWEST CORPORATION 9638 VANCOUVER WA
2005-09-08 360-487-8XXX 8000–8999Assigned QWEST CORPORATION 9638 VANCOUVER WA
2005-02-24 360-388-9XXX 9000–9999Assigned QWEST CORPORATION 9638 CENTRALIA WA
2004-08-16 360-487-5XXX 5000–5999Assigned QWEST CORPORATION 9638 VANCOUVER WA
2004-08-16 360-788-6XXX 6000–6999Assigned QWEST CORPORATION 9638 WHATCOMCTY WA
2003-08-01 360-662-7XXX 7000–7999Assigned QWEST CORPORATION 9638 SILVERDALE WA
2002-11-19 360-487-1XXX 1000–1999Assigned QWEST CORPORATION 9638 VANCOUVER WA
2002-11-19 360-487-2XXX 2000–2999Assigned QWEST CORPORATION 9638 VANCOUVER WA
2002-11-19 360-487-3XXX 3000–3999Assigned QWEST CORPORATION 9638 VANCOUVER WA
2002-11-19 360-487-4XXX 4000–4999Assigned QWEST CORPORATION 9638 VANCOUVER WA
2002-08-21 360-443-3XXX 3000–3999Assigned QWEST CORPORATION 9638 PORT ORCH WA
2002-05-31 360-627-2XXX 2000–2999Assigned QWEST CORPORATION 9638 BREMERTON WA
2002-05-31 360-627-3XXX 3000–3999Assigned QWEST CORPORATION 9638 BREMERTON WA
2002-05-31 360-627-4XXX 4000–4999Assigned QWEST CORPORATION 9638 BREMERTON WA
2002-05-31 360-627-5XXX 5000–5999Assigned QWEST CORPORATION 9638 BREMERTON WA
2002-05-31 360-627-6XXX 6000–6999Assigned QWEST CORPORATION 9638 BREMERTON 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.