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 508
METROPCS, INC. 126
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
2022-05-05 508-343-3XXX 3000–3999Assigned METROPCS, INC. 5562 SEEKONK MA
2021-09-29 508-507-4XXX 4000–4999Assigned METROPCS, INC. 5562 FRANKLIN MA
2021-09-29 508-507-5XXX 5000–5999Assigned METROPCS, INC. 5562 FRANKLIN MA
2021-09-24 508-557-3XXX 3000–3999Assigned METROPCS, INC. 5562 SEEKONK MA
2021-09-24 508-732-2XXX 2000–2999Assigned METROPCS, INC. 5562 PLYMOUTH MA
2019-08-15 508-239-0XXX 0000–0999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2019-06-28 508-239-5XXX 5000–5999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2019-06-28 508-239-6XXX 6000–6999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2019-06-10 508-239-3XXX 3000–3999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2019-06-10 508-239-4XXX 4000–4999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2019-05-02 508-239-2XXX 2000–2999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2018-04-23 508-431-9XXX 9000–9999Assigned METROPCS, INC. 5562 ATTLEBORO MA
2017-01-20 508-383-3XXX 3000–3999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2016-06-20 508-817-0XXX 0000–0999Assigned METROPCS, INC. 5562 NEWBEDFORD MA
2011-07-18 508-513-5XXX 5000–5999Assigned METROPCS, INC. 5562 BROCKTON MA
2010-08-09 508-663-6XXX 6000–6999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2010-08-09 508-663-7XXX 7000–7999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2010-08-09 508-663-8XXX 8000–8999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2010-08-09 508-663-9XXX 9000–9999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2010-06-24 508-840-4XXX 4000–4999Assigned METROPCS, INC. 5562 ATTLEBORO MA
2010-05-25 508-933-3XXX 3000–3999Assigned METROPCS, INC. 5562 ROCHESTER MA
2010-05-25 508-933-9XXX 9000–9999Assigned METROPCS, INC. 5562 ROCHESTER MA
2009-06-30 508-840-5XXX 5000–5999Assigned METROPCS, INC. 5562 ATTLEBORO MA
2009-06-30 508-840-6XXX 6000–6999Assigned METROPCS, INC. 5562 ATTLEBORO MA
2009-06-30 508-840-7XXX 7000–7999Assigned METROPCS, INC. 5562 ATTLEBORO MA
2009-06-30 508-840-8XXX 8000–8999Assigned METROPCS, INC. 5562 ATTLEBORO MA
2008-11-25 508-216-3XXX 3000–3999Assigned METROPCS, INC. 5562 FOXBORO MA
2008-08-12 508-216-6XXX 6000–6999Assigned METROPCS, INC. 5562 FOXBORO MA
2008-07-25 508-840-0XXX 0000–0999Assigned METROPCS, INC. 5562 ATTLEBORO MA
2008-07-25 508-840-1XXX 1000–1999Assigned METROPCS, INC. 5562 ATTLEBORO MA
2008-07-25 508-840-2XXX 2000–2999Assigned METROPCS, INC. 5562 ATTLEBORO MA
2008-07-25 508-933-0XXX 0000–0999Assigned METROPCS, INC. 5562 ROCHESTER MA
2008-07-25 508-933-1XXX 1000–1999Assigned METROPCS, INC. 5562 ROCHESTER MA
2008-07-25 508-933-2XXX 2000–2999Assigned METROPCS, INC. 5562 ROCHESTER MA
2008-07-25 508-933-4XXX 4000–4999Assigned METROPCS, INC. 5562 ROCHESTER MA
2008-07-25 508-933-5XXX 5000–5999Assigned METROPCS, INC. 5562 ROCHESTER MA
2008-07-25 508-933-6XXX 6000–6999Assigned METROPCS, INC. 5562 ROCHESTER MA
2008-07-25 508-933-7XXX 7000–7999Assigned METROPCS, INC. 5562 ROCHESTER MA
2008-07-25 508-933-8XXX 8000–8999Assigned METROPCS, INC. 5562 ROCHESTER MA
2008-07-23 508-203-0XXX 0000–0999Assigned METROPCS, INC. 5562 FOXBORO MA
2008-07-23 508-371-0XXX 0000–0999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2008-07-23 508-371-5XXX 5000–5999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2008-07-23 508-371-6XXX 6000–6999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2008-07-23 508-371-7XXX 7000–7999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2008-07-23 508-371-8XXX 8000–8999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2008-07-23 508-405-5XXX 5000–5999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2008-07-23 508-405-6XXX 6000–6999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2008-07-23 508-405-7XXX 7000–7999Assigned METROPCS, INC. 5562 FRAMINGHAM MA
2008-07-23 508-718-7XXX 7000–7999Assigned METROPCS, INC. 5562 FOXBORO MA
2008-07-23 508-718-8XXX 8000–8999Assigned METROPCS, INC. 5562 FOXBORO MA

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.