NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 425
BANDWIDTH.COM CLEC, LLC - WA 141
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
2026-08-07 425-665-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BELLEVUE WA
2026-06-22 425-425-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EVERETT WA
2026-06-22 425-579-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F HALLS LAKE WA
2026-06-22 425-587-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA
2026-05-01 425-325-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BOTHELL WA
2026-02-03 425-592-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BELLEVUE WA
2026-01-12 425-581-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SILVERLAKE WA
2026-01-12 425-995-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EVERETT WA
2021-11-02 425-539-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EVERETT WA
2021-04-30 425-386-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EVERETT WA
2020-12-18 425-439-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BOTHELL WA
2020-12-07 425-470-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EVERETT WA
2020-12-07 425-470-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EVERETT WA
2020-10-12 425-477-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F ISSAQUAH WA
2020-09-04 425-276-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F RENTON WA
2020-08-20 425-666-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EVERETT WA
2020-05-28 425-728-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F RENTON WA
2020-05-22 425-331-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F ISSAQUAH WA
2019-12-09 425-300-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BELLEVUE WA
2019-12-03 425-300-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BELLEVUE WA
2019-11-11 425-521-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F EVERETT WA
2019-01-15 425-655-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA
2019-01-15 425-655-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA
2019-01-15 425-655-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA
2019-01-15 425-655-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA
2019-01-15 425-655-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA
2018-11-16 425-655-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA
2017-02-01 425-332-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SILVERLAKE WA
2016-09-23 425-448-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA
2016-09-23 425-448-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA
2016-09-23 425-448-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA
2016-09-23 425-616-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F HALLS LAKE WA
2016-09-23 425-616-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F HALLS LAKE WA
2016-09-23 425-616-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F HALLS LAKE WA
2016-09-23 425-659-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BOTHELL WA
2016-09-23 425-659-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BOTHELL WA
2016-09-23 425-659-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BOTHELL WA
2016-07-01 425-616-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F HALLS LAKE WA
2016-03-10 425-230-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BELLEVUE WA
2016-03-10 425-230-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BELLEVUE WA
2016-03-10 425-230-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BELLEVUE WA
2016-03-08 425-375-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F BOTHELL WA
2016-03-08 425-523-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F RENTON WA
2016-03-08 425-523-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F RENTON WA
2016-03-08 425-523-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F RENTON WA
2016-03-08 425-523-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F RENTON WA
2016-03-08 425-553-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA
2016-03-08 425-553-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA
2016-03-08 425-553-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA
2016-03-08 425-553-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KIRKLAND WA

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.