NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

1 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, last 30 days — NPA 480
TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 1
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
2010-03-15 480-745-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2010-03-15 480-745-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PHOENIX AZ
2010-03-15 480-788-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-15 480-788-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-15 480-788-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-15 480-788-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-15 480-788-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-15 480-788-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-15 480-788-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-15 480-788-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-15 480-788-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-15 480-788-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-253-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-331-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-331-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-331-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-331-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-331-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-331-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-331-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-331-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-331-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-442-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-442-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-442-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-442-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-442-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-442-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-442-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-442-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-442-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-442-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-466-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-648-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-648-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-648-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-648-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-648-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-648-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-779-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-779-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-779-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-779-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-818-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-818-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-818-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-08 480-818-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - AZ 587F PHOENIX AZ
2010-03-04 480-648-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2010-03-04 480-648-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - AZ 3285 PHOENIX AZ
2010-02-10 480-253-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 6572 PHOENIX AZ

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.