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 209
LEVEL 3 COMMUNICATIONS, LLC - CA 159
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
2021-06-30 209-868-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 STOCKTON CA
2021-04-15 209-921-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 STOCKTON CA
2019-02-28 209-508-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ANGELSCAMP CA
2018-06-07 209-458-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MODESTO CA
2018-03-26 209-695-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PATTERSON CA
2018-03-08 209-290-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 STOCKTON CA
2017-06-05 209-672-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MODESTO CA
2016-07-14 209-313-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 STOCKTON CA
2016-07-13 209-313-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 STOCKTON CA
2016-07-01 209-707-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MANTECA CA
2016-05-02 209-702-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MODESTO CA
2016-01-19 209-364-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 DOS PALOS CA
2015-08-25 209-452-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LODI CA
2015-07-24 209-636-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 STOCKTON CA
2015-06-23 209-636-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 STOCKTON CA
2014-10-15 209-398-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LIVINGSTON CA
2014-09-30 209-284-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MODESTO CA
2014-08-26 209-206-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 TUOLUMNE CA
2014-08-20 209-780-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 GUSTINE CA
2014-06-26 209-851-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 STOCKTON CA
2014-06-19 209-853-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 WTFR MAIN CA
2014-05-02 209-665-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MANTECA CA
2014-05-02 209-893-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PLYMOUTH CA
2014-05-01 209-784-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LE GRAND CA
2014-04-14 209-650-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 TRACY CA
2014-04-11 209-563-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNELLING CA
2014-04-10 209-375-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 YOSEMITE CA
2014-04-10 209-677-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNRA JUNO CA
2014-04-03 209-992-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 STOCKTON CA
2014-02-27 209-900-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MODESTO CA
2014-02-11 209-213-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNRA MAIN CA
2013-12-13 209-283-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 JACKSON CA
2013-11-27 209-292-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 STOCKTON CA
2013-11-06 209-500-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MERCED CA
2013-11-06 209-730-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 GALT CA
2013-10-11 209-887-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LINDEN CA
2013-10-04 209-813-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ANGELSCAMP CA
2013-09-11 209-666-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 TRACY CA
2013-07-10 209-242-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 STOCKTON CA
2013-06-27 209-276-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ATWATER CA
2013-06-20 209-248-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MODESTO CA
2013-06-07 209-269-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LODI CA
2013-05-28 209-225-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MODESTO CA
2013-02-14 209-941-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 STOCKTON CA
2013-01-24 209-248-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MODESTO CA
2013-01-07 209-259-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MERCED CA
2012-08-23 209-813-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ANGELSCAMP CA
2012-02-29 209-898-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 STOCKTON CA
2012-02-03 209-364-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 DOS PALOS CA
2012-02-01 209-732-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 GROVELAND CA

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.