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 253
BANDWIDTH.COM CLEC, LLC - WA 103
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
2026-07-10 253-452-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KENT WA
2026-06-22 253-430-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F GIG HARBOR WA
2024-12-26 253-400-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F GIG HARBOR WA
2024-09-25 253-413-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F AUBURN WA
2024-03-07 253-362-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SUMNER WA
2024-03-07 253-453-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMAWVLY WA
2021-09-22 253-342-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2021-09-22 253-342-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2021-05-27 253-600-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F AUBURN WA
2021-03-31 253-346-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2021-03-31 253-346-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2020-12-16 253-765-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F DES MOINES WA
2020-10-08 253-780-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F GRAHAM WA
2020-09-18 253-693-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PUYALLUP WA
2020-07-08 253-319-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2020-04-20 253-319-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2019-01-15 253-527-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2019-01-15 253-527-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2018-07-16 253-999-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2018-03-14 253-750-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SUMNER WA
2018-03-07 253-300-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2018-03-07 253-300-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2017-11-21 253-387-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PUYALLUP WA
2017-11-21 253-387-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PUYALLUP WA
2017-09-06 253-240-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2017-09-06 253-331-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMAWVLY WA
2017-07-05 253-987-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SUMNER WA
2017-02-01 253-287-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2017-02-01 253-987-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SUMNER WA
2017-01-31 253-392-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMAWVLY WA
2016-07-01 253-409-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F AUBURN WA
2016-06-23 253-257-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMAWVLY WA
2016-06-22 253-655-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F GRAHAM WA
2016-06-22 253-750-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SUMNER WA
2016-03-08 253-260-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2016-03-08 253-260-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2016-03-08 253-260-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2016-03-08 253-260-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F TACOMA WA
2016-03-08 253-446-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PUYALLUP WA
2016-03-08 253-466-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PUYALLUP WA
2016-03-08 253-480-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KENT WA
2016-03-08 253-480-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KENT WA
2016-03-08 253-881-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PUYALLUP WA
2016-03-08 253-881-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PUYALLUP WA
2016-01-14 253-372-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KENT WA
2016-01-14 253-372-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F KENT WA
2016-01-14 253-652-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F DES MOINES WA
2016-01-14 253-652-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F DES MOINES WA
2016-01-14 253-881-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F PUYALLUP WA
2014-10-27 253-501-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - WA 006F SUMNER 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.