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 626
LEVEL 3 COMMUNICATIONS, LLC - CA 121
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
2020-05-13 626-866-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ALHAMBRA CA
2020-03-12 626-514-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PSDN PSDN CA
2019-09-04 626-517-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PSDN PSDN CA
2017-02-01 626-525-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ALHAMBRA CA
2016-12-07 626-349-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ALHAMBRA CA
2015-11-16 626-493-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ALHAMBRA CA
2015-11-16 626-838-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 COVINA CA
2015-07-08 626-714-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PSDN PSDN CA
2014-11-21 626-599-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MONROVIA CA
2014-07-24 626-658-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PSDN PSDN CA
2014-07-02 626-646-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 COVINA CA
2014-06-26 626-427-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ALHAMBRA CA
2014-04-04 626-261-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 COVINA CA
2014-03-31 626-986-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LA PUENTE CA
2014-03-13 626-774-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL MONTE CA
2014-02-28 626-873-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MONROVIA CA
2014-02-27 626-243-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PSDN PSDN CA
2014-01-14 626-400-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ARCADIA CA
2014-01-14 626-587-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 COVINA CA
2014-01-10 626-788-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PSDN PSDN CA
2013-12-17 626-774-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL MONTE CA
2013-10-30 626-899-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ALHAMBRA CA
2013-10-17 626-604-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SIERRAMADR CA
2013-10-11 626-788-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PSDN PSDN CA
2013-10-04 626-671-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 COVINA CA
2013-07-10 626-427-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ALHAMBRA CA
2013-06-19 626-773-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PSDN PSDN CA
2013-04-11 626-531-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MONROVIA CA
2013-03-11 626-671-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 COVINA CA
2013-03-06 626-427-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ALHAMBRA CA
2013-03-06 626-774-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL MONTE CA
2012-11-29 626-594-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 AZUSA CA
2012-11-29 626-701-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ARCADIA CA
2012-10-17 626-415-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MONROVIA CA
2012-06-21 626-586-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ALHAMBRA CA
2012-06-06 626-219-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PSDN PSDN CA
2012-05-02 626-737-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PSDN PSDN CA
2012-02-01 626-586-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ALHAMBRA CA
2012-01-20 626-415-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MONROVIA CA
2012-01-20 626-921-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SIERRAMADR CA
2012-01-04 626-587-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 COVINA CA
2011-12-15 626-594-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 AZUSA CA
2011-10-24 626-269-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LA PUENTE CA
2011-09-22 626-415-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MONROVIA CA
2011-09-12 626-340-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ARCADIA CA
2011-07-27 626-414-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ALHAMBRA CA
2011-03-14 626-467-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNGBLCNN CA
2011-02-15 626-513-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 AZUSA CA
2011-01-11 626-219-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PSDN PSDN CA
2010-11-19 626-486-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PSDN PSDN 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.