NumberResearch Membership · Data 09/24/2026

Recent thousands-block assignments

0 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/24/2026

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 419
T-MOBILE USA, INC. 25
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
2022-09-07 419-688-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 BUTLER OH
2021-09-08 419-312-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MANSFIELD OH
2012-02-16 419-496-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 ASHLAND OH
2012-02-16 419-677-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NORWALK OH
2012-01-31 419-921-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 NORWALK OH
2011-11-23 419-632-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MANSFIELD OH
2011-10-28 419-496-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ASHLAND OH
2011-10-28 419-496-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ASHLAND OH
2011-06-03 419-908-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ASHLAND OH
2011-02-03 419-677-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 NORWALK OH
2010-08-20 419-908-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 ASHLAND OH
2010-07-30 419-921-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 NORWALK OH
2009-09-23 419-612-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MANSFIELD OH
2009-09-23 419-612-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MANSFIELD OH
2009-09-23 419-612-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MANSFIELD OH
2009-02-25 419-908-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 ASHLAND OH
2008-07-31 419-689-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BUCYRUS OH
2008-01-04 419-688-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 BUTLER OH
2007-09-11 419-610-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 MANSFIELD OH
2007-04-11 419-689-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BUCYRUS OH
2007-02-19 419-689-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BUCYRUS OH
2007-01-04 419-612-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 MANSFIELD OH
2006-05-25 419-688-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BUTLER OH
2004-08-16 419-520-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MANSFIELD OH
2003-09-04 419-908-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ASHLAND OH

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.