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 562
TWC IP ENABLED SERVICES, LLC 59
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
2017-09-25 562-358-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K WHITTIER CA
2017-08-22 562-379-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K NORWALK CA
2017-07-28 562-588-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K ALAMITOS CA
2016-11-29 562-263-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K NORWALK CA
2016-11-29 562-524-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K LA HABRA CA
2016-08-26 562-297-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K CMTN CMTN CA
2016-05-18 562-203-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K WHITTIER CA
2016-05-18 562-357-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K ALAMITOS CA
2016-05-17 562-210-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K NORWALK CA
2016-05-16 562-302-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K DOWNEY CA
2016-03-29 562-801-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K PICORIVERA CA
2016-01-29 562-475-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K LA HABRA CA
2015-10-21 562-526-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K NORWALK CA
2015-09-29 562-386-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K ALAMITOS CA
2015-09-03 562-746-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K DOWNEY CA
2015-04-23 562-348-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K NORWALK CA
2015-04-22 562-351-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K WHITTIER CA
2015-04-22 562-641-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K PICORIVERA CA
2015-03-12 562-396-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K DOWNEY CA
2015-03-12 562-451-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K LA HABRA CA
2014-10-21 562-448-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K LA HABRA CA
2014-04-10 562-584-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K NORWALK CA
2013-07-23 562-842-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K PICORIVERA CA
2013-07-22 562-794-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K ALAMITOS CA
2013-06-11 562-363-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K CMTN CMTN CA
2013-03-19 562-202-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K NORWALK CA
2013-03-19 562-240-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K ALAMITOS CA
2013-03-19 562-273-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K WHITTIER CA
2013-03-19 562-381-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K DOWNEY CA
2013-03-19 562-448-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K LA HABRA CA
2013-03-19 562-541-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K LAKEWOOD CA
2013-03-19 562-821-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K PICORIVERA CA
2013-03-12 562-363-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K CMTN CMTN CA
2012-12-21 562-202-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K NORWALK CA
2012-10-30 562-232-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K CMTN CMTN CA
2012-03-08 562-315-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K LA HABRA CA
2012-03-01 562-446-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K ALAMITOS CA
2011-05-03 562-758-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K WHITTIER CA
2009-10-30 562-368-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K PICORIVERA CA
2009-10-27 562-291-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K DOWNEY CA
2009-10-27 562-291-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K DOWNEY CA
2009-10-22 562-291-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K DOWNEY CA
2009-09-25 562-281-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K NORWALK CA
2009-06-12 562-788-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K CMTN CMTN CA
2008-10-09 562-659-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K DOWNEY CA
2008-09-25 562-296-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K ALAMITOS CA
2008-09-11 562-245-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K LA HABRA CA
2008-06-18 562-788-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K CMTN CMTN CA
2008-05-29 562-991-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K NORWALK CA
2007-12-27 562-612-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K LONG BEACH CA

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.