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 859
LEVEL 3 COMMUNICATIONS, LLC - KY 130
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
2024-10-29 859-450-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 CYNTHIANA KY
2023-02-07 859-452-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 RICHMOND KY
2022-05-19 859-210-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 SPRINGFLD KY
2021-05-04 859-938-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 BOONE KY
2018-02-20 859-267-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 RICHMOND KY
2018-01-23 859-800-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2017-11-07 859-551-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2017-09-12 859-787-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2017-06-20 859-687-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2017-04-12 859-310-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2016-06-08 859-618-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2015-12-09 859-202-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2015-12-02 859-286-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2015-08-20 859-692-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 BOONE KY
2015-07-28 859-286-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2015-07-14 859-286-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2015-05-18 859-286-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2015-05-18 859-286-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2015-02-11 859-687-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2014-12-30 859-927-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 GLENCOE KY
2014-09-25 859-287-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 COVINGTON KY
2014-09-25 859-469-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2014-04-29 859-395-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LANCASTER KY
2014-03-31 859-295-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 WILMORE KY
2014-03-31 859-403-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 MIDWAY KY
2014-03-31 859-549-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 PAINT LICK KY
2013-12-02 859-692-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 BOONE KY
2013-11-07 859-878-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 COVINGTON KY
2013-06-21 859-303-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2013-06-14 859-687-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2013-06-06 859-569-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 CYNTHIANA KY
2013-06-04 859-340-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 PARIS KY
2013-04-30 859-518-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 FORD KY
2012-09-20 859-661-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 RICHMOND KY
2012-08-01 859-469-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2012-06-14 859-447-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2012-02-27 859-554-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2012-02-27 859-554-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2011-12-01 859-379-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 WALTON KY
2011-11-10 859-795-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 BOONE KY
2011-04-04 859-317-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2011-02-04 859-251-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 VERSAILLES KY
2011-01-03 859-795-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 BOONE KY
2010-12-15 859-905-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 COVINGTON KY
2010-12-06 859-309-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 LEXINGTON KY
2010-11-09 859-446-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 COVINGTON KY
2010-01-19 859-308-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 COVINGTON KY
2008-03-25 859-241-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 NICHOLASVL KY
2008-02-20 859-353-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 RICHMOND KY
2008-02-04 859-212-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - KY 4369 BOONE KY

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.