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 814
T-MOBILE USA, INC. 74
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
2023-06-28 814-665-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CORRY PA
2022-02-14 814-738-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2022-02-14 814-738-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2022-02-14 814-738-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2021-03-06 814-663-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CORRY PA
2021-02-01 814-550-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MEADVILLE PA
2021-02-01 814-550-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MEADVILLE PA
2020-09-29 814-488-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 FRANKLIN PA
2020-09-29 814-488-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 FRANKLIN PA
2020-09-29 814-488-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 FRANKLIN PA
2020-07-28 814-402-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 GIRARD PA
2020-07-28 814-622-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 GIRARD PA
2020-07-28 814-622-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 GIRARD PA
2017-05-15 814-388-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 FRANKLIN PA
2017-05-15 814-388-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 FRANKLIN PA
2015-08-27 814-737-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2015-08-27 814-737-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2015-08-27 814-737-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2015-08-27 814-737-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2015-08-27 814-737-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2015-02-04 814-844-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2015-02-04 814-844-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2015-02-04 814-844-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2015-02-04 814-844-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2014-10-21 814-315-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2014-10-21 814-315-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2014-03-12 814-350-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MEADVILLE PA
2014-03-12 814-350-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MEADVILLE PA
2011-03-22 814-350-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MEADVILLE PA
2011-03-02 814-920-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2011-03-02 814-920-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2011-03-02 814-920-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2009-05-28 814-790-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2009-05-28 814-790-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2009-04-20 814-806-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2009-04-20 814-806-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2009-04-20 814-806-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2009-02-09 814-790-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2009-02-09 814-790-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2009-01-12 814-520-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2009-01-07 814-384-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2009-01-07 814-431-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2008-09-02 814-384-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2008-09-02 814-384-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2008-08-15 814-520-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2008-05-06 814-384-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2007-10-25 814-384-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2007-05-18 814-520-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2007-05-18 814-520-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ERIE PA
2007-05-18 814-520-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ERIE PA

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.