NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

17 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, last 30 days — NPA 424
ONVOY, LLC - CA 15
OPENTACT INC. 1
NEW CINGULAR WIRELESS PCS, LLC 1
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
2011-04-21 424-888-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D INGLEWOOD CA
2011-04-20 424-273-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 W ANGELES CA
2011-04-15 424-271-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 TORRANCE CA
2011-04-15 424-274-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2011-04-13 424-269-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D HAWTHORNE CA
2011-04-12 424-333-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2011-04-12 424-666-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2011-04-12 424-666-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2011-04-12 424-666-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2011-04-12 424-666-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2011-04-08 424-254-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDONDO CA
2011-04-08 424-256-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E W ANGELES CA
2011-04-08 424-652-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E W ANGELES CA
2011-04-07 424-257-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D REDONDO CA
2011-04-04 424-216-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN MRVS CA
2011-04-04 424-216-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN MRVS CA
2011-04-04 424-228-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN MRVS CA
2011-04-04 424-272-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN SNMN CA
2011-04-04 424-272-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN SNMN CA
2011-04-04 424-272-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN SNMN CA
2011-04-04 424-272-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN SNMN CA
2011-04-04 424-272-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN SNMN CA
2011-04-04 424-272-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN SNMN CA
2011-04-04 424-835-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN MRVS CA
2011-04-04 424-835-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN MRVS CA
2011-03-30 424-253-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2011-03-25 424-888-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 INGLEWOOD CA
2011-03-23 424-268-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNMN SNMN CA
2011-03-21 424-239-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2011-03-21 424-256-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D W ANGELES CA
2011-03-21 424-333-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2011-03-21 424-333-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2011-03-21 424-333-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2011-03-21 424-333-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2011-03-21 424-666-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2011-03-21 424-666-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2011-03-16 424-271-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D TORRANCE CA
2011-03-15 424-216-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SNMN MRVS CA
2011-03-11 424-256-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K W ANGELES CA
2011-03-09 424-230-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2011-03-08 424-251-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D LOMITA CA
2011-03-08 424-266-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D CMTN GRDN CA
2011-03-08 424-268-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K SNMN SNMN CA
2011-03-08 424-400-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDONDO CA
2011-03-02 424-336-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C HAWTHORNE CA
2011-02-28 424-244-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN GRDN CA
2011-02-28 424-271-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 TORRANCE CA
2011-02-28 424-543-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CULVERCITY CA
2011-02-25 424-272-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 SNMN SNMN CA
2011-02-25 424-272-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 SNMN SNMN 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.