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 801
T-MOBILE USA, INC. 348
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
2024-02-14 801-385-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MURRAY UT
2024-02-14 801-385-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MURRAY UT
2024-02-14 801-385-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MURRAY UT
2024-02-14 801-385-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MURRAY UT
2024-02-14 801-385-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MURRAY UT
2024-02-14 801-385-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MURRAY UT
2024-02-14 801-385-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MURRAY UT
2024-02-14 801-385-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MURRAY UT
2014-05-01 801-989-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2012-09-13 801-919-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-12-20 801-919-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-12-20 801-919-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-12-20 801-919-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-12-20 801-919-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-05-05 801-600-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2011-05-05 801-600-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2011-05-05 801-600-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2011-05-05 801-600-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2011-05-05 801-600-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2011-05-05 801-600-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2011-05-05 801-600-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2011-05-05 801-600-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2011-05-05 801-600-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2011-05-05 801-600-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 OGDEN UT
2011-05-05 801-800-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-05-05 801-800-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-05-05 801-800-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-05-05 801-800-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-05-05 801-800-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-05-05 801-800-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-05-05 801-800-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-05-05 801-800-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-05-05 801-800-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-02-23 801-900-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-02-23 801-900-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-02-23 801-900-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-02-23 801-900-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-02-16 801-500-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-02-16 801-500-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-02-16 801-500-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-02-16 801-500-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PROVO UT
2011-02-16 801-888-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2011-02-16 801-888-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2011-02-16 801-888-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2011-02-16 801-989-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 KAYSVILLE UT
2011-02-01 801-970-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2011-02-01 801-970-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2011-02-01 801-970-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2011-02-01 801-970-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT
2011-02-01 801-970-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SALT LAKE UT

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.