NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

6 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 572
ONVOY, LLC - OK 5
T-MOBILE USA, INC. 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
2025-03-10 572-261-9XXX 9000–9999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-262-0XXX 0000–0999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-262-1XXX 1000–1999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-262-2XXX 2000–2999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-262-3XXX 3000–3999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-262-4XXX 4000–4999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-262-5XXX 5000–5999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-262-6XXX 6000–6999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-262-7XXX 7000–7999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-262-8XXX 8000–8999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-262-9XXX 9000–9999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-263-0XXX 0000–0999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-263-1XXX 1000–1999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-263-2XXX 2000–2999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-263-3XXX 3000–3999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-263-4XXX 4000–4999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-263-5XXX 5000–5999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-263-6XXX 6000–6999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-263-7XXX 7000–7999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-263-8XXX 8000–8999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-263-9XXX 9000–9999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-264-0XXX 0000–0999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-264-1XXX 1000–1999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-264-2XXX 2000–2999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-264-3XXX 3000–3999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-264-4XXX 4000–4999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-264-5XXX 5000–5999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-264-6XXX 6000–6999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-264-7XXX 7000–7999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-264-8XXX 8000–8999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-264-9XXX 9000–9999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-265-0XXX 0000–0999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-265-1XXX 1000–1999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-265-2XXX 2000–2999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-265-3XXX 3000–3999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-265-4XXX 4000–4999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-265-5XXX 5000–5999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-265-6XXX 6000–6999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-265-7XXX 7000–7999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-265-8XXX 8000–8999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-265-9XXX 9000–9999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-266-0XXX 0000–0999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-266-1XXX 1000–1999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-266-2XXX 2000–2999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-266-3XXX 3000–3999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-266-4XXX 4000–4999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-266-5XXX 5000–5999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-266-6XXX 6000–6999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-266-7XXX 7000–7999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK
2025-03-10 572-266-8XXX 8000–8999Assigned UNITED STATES CELLULAR - OK 6272 OKLA CITY OK

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.