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 432
LEVEL 3 COMMUNICATIONS, LLC - TX 54
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
2026-04-01 432-329-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ALPINE TX
2026-04-01 432-603-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 VAN HORN TX
2026-04-01 432-667-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MARFA TX
2022-05-17 432-256-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MIDLAND TX
2020-06-25 432-246-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 TERMINAL TX
2019-11-20 432-243-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MIDLAND TX
2019-03-06 432-252-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 EUNICE WST TX
2019-02-28 432-218-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MIDLAND TX
2019-01-22 432-302-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 IRAAN TX
2018-08-22 432-847-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEMINOLE TX
2017-12-18 432-226-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FRANKEL CY TX
2017-12-14 432-223-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ANDREWS TX
2017-06-20 432-789-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MIDLAND TX
2017-04-24 432-586-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 KERMIT TX
2016-09-20 432-827-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 GOLDSMITH TX
2015-09-03 432-203-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MIDLAND TX
2015-07-22 432-307-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ODESSA TX
2015-03-27 432-517-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BIG SPRING TX
2015-03-13 432-755-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PECOS TX
2014-12-26 432-251-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MONAHANS TX
2014-12-04 432-253-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MIDLAND TX
2014-07-23 432-698-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CRANE TX
2014-07-15 432-375-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BALMORHEA TX
2014-07-02 432-242-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MIDLAND TX
2014-02-27 432-268-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BIG SPRING TX
2013-05-24 432-218-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MIDLAND TX
2013-04-11 432-214-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 TERMINAL TX
2013-01-08 432-653-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ODESSA TX
2012-12-14 432-271-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BIG SPRING TX
2011-12-08 432-653-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ODESSA TX
2011-11-29 432-242-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MIDLAND TX
2011-09-12 432-558-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CRANE TX
2011-09-12 432-847-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 SEMINOLE TX
2010-11-30 432-242-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MIDLAND TX
2010-05-21 432-614-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ODESSA TX
2008-07-08 432-218-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MIDLAND TX
2008-01-31 432-360-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 FTSTOCKTON TX
2007-11-21 432-272-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ODESSA TX
2007-10-15 432-614-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ODESSA TX
2007-06-19 432-614-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ODESSA TX
2007-05-09 432-897-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MIDLAND TX
2006-09-11 432-755-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 PECOS TX
2006-08-31 432-614-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ODESSA TX
2006-08-31 432-614-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ODESSA TX
2006-08-30 432-213-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 BIG SPRING TX
2005-12-22 432-535-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 MIDKIFF TX
2005-12-22 432-558-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 CRANE TX
2005-06-21 432-296-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 TERMINAL TX
2005-06-21 432-296-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 TERMINAL TX
2004-12-15 432-614-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - TX 6114 ODESSA 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.