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 469
LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 53
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
2017-11-20 469-577-8XXX 8000–8999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 DALLAS TX
2016-04-26 469-677-3XXX 3000–3999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 DALLAS TX
2015-12-02 469-299-6XXX 6000–6999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 IRVING TX
2015-12-02 469-680-0XXX 0000–0999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 DALLAS TX
2015-11-30 469-857-7XXX 7000–7999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 DALLAS TX
2015-07-07 469-346-2XXX 2000–2999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 CARROLLTON TX
2015-06-03 469-980-3XXX 3000–3999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 FRISCO TX
2015-06-03 469-980-4XXX 4000–4999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 FRISCO TX
2015-03-17 469-980-2XXX 2000–2999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 FRISCO TX
2015-02-03 469-344-2XXX 2000–2999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 PLANO TX
2014-11-06 469-626-4XXX 4000–4999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 PLANO TX
2014-09-04 469-284-6XXX 6000–6999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 IRVING TX
2014-09-04 469-284-7XXX 7000–7999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 IRVING TX
2014-08-01 469-702-4XXX 4000–4999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 LEWISVILLE TX
2014-06-30 469-284-1XXX 1000–1999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 IRVING TX
2014-06-30 469-284-2XXX 2000–2999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 IRVING TX
2014-06-30 469-284-3XXX 3000–3999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 IRVING TX
2014-04-02 469-312-7XXX 7000–7999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 LEWISVILLE TX
2014-03-13 469-706-4XXX 4000–4999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 IRVING TX
2014-01-27 469-706-1XXX 1000–1999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 IRVING TX
2014-01-27 469-706-2XXX 2000–2999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 IRVING TX
2013-12-20 469-666-6XXX 6000–6999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 PLANO TX
2013-09-06 469-353-5XXX 5000–5999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 FRISCO TX
2013-08-06 469-535-4XXX 4000–4999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 FRISCO TX
2013-06-28 469-481-5XXX 5000–5999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 PROSPER TX
2013-05-06 469-773-2XXX 2000–2999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 WAXAHACHIE TX
2013-02-01 469-440-3XXX 3000–3999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 PLANO TX
2013-02-01 469-440-6XXX 6000–6999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 PLANO TX
2012-12-20 469-240-8XXX 8000–8999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 LEWISVILLE TX
2012-07-17 469-305-5XXX 5000–5999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 FRISCO TX
2012-03-02 469-308-0XXX 0000–0999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 LEWISVILLE TX
2012-03-02 469-308-1XXX 1000–1999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 LEWISVILLE TX
2012-03-02 469-308-2XXX 2000–2999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 LEWISVILLE TX
2012-03-02 469-308-3XXX 3000–3999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 LEWISVILLE TX
2012-03-02 469-308-4XXX 4000–4999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 LEWISVILLE TX
2012-03-02 469-308-5XXX 5000–5999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 LEWISVILLE TX
2012-03-02 469-308-6XXX 6000–6999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 LEWISVILLE TX
2012-03-02 469-308-7XXX 7000–7999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 LEWISVILLE TX
2012-03-02 469-308-8XXX 8000–8999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 LEWISVILLE TX
2012-03-02 469-308-9XXX 9000–9999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 LEWISVILLE TX
2010-09-02 469-277-5XXX 5000–5999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 PLANO TX
2010-08-05 469-528-9XXX 9000–9999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 LEWISVILLE TX
2009-01-29 469-443-5XXX 5000–5999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 PLANO TX
2009-01-13 469-298-7XXX 7000–7999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 PLANO TX
2007-11-21 469-718-4XXX 4000–4999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 DALLAS TX
2007-11-21 469-941-1XXX 1000–1999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 DALLAS TX
2007-09-27 469-484-8XXX 8000–8999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 DALLAS TX
2006-09-13 469-426-3XXX 3000–3999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 IRVING TX
2006-03-28 469-948-2XXX 2000–2999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 LEWISVILLE TX
2006-03-28 469-948-3XXX 3000–3999Assigned LEVEL 3 OF TELECOM OF TEXAS, LLC - TX 7516 LEWISVILLE TX

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.