NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

12 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 10
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
2012-05-21 424-835-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN MRVS CA
2012-05-18 424-273-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E W ANGELES CA
2012-05-16 424-571-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J TORRANCE CA
2012-05-10 424-333-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BEVERLYHLS CA
2012-05-08 424-277-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E EL SEGUNDO CA
2012-05-07 424-280-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNMN SNMN CA
2012-05-07 424-280-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNMN SNMN CA
2012-05-07 424-280-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNMN SNMN CA
2012-05-03 424-275-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K REDONDO CA
2012-05-02 424-273-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K W ANGELES CA
2012-05-02 424-277-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL SEGUNDO CA
2012-05-02 424-279-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2012-04-30 424-738-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E AVALON CA
2012-04-27 424-286-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CMTN GRDN CA
2012-04-25 424-274-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-04-25 424-274-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-04-25 424-279-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-04-25 424-279-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-04-25 424-279-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-04-18 424-603-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CULVERCITY CA
2012-04-04 424-300-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C CMTN GRDN CA
2012-04-04 424-300-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C CMTN GRDN CA
2012-04-04 424-300-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C CMTN GRDN CA
2012-04-04 424-300-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C CMTN GRDN CA
2012-04-04 424-300-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C CMTN GRDN CA
2012-04-04 424-300-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C CMTN GRDN CA
2012-04-04 424-300-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C CMTN GRDN CA
2012-04-04 424-300-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C CMTN GRDN CA
2012-04-04 424-300-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C CMTN GRDN CA
2012-04-04 424-400-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C REDONDO CA
2012-04-04 424-400-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C REDONDO CA
2012-04-04 424-500-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SNMN MRVS CA
2012-04-04 424-500-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C SNMN MRVS CA
2012-04-04 424-500-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C SNMN MRVS CA
2012-04-04 424-500-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C SNMN MRVS CA
2012-04-04 424-500-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C SNMN MRVS CA
2012-04-04 424-500-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C SNMN MRVS CA
2012-04-04 424-600-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-04-04 424-600-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-04-04 424-600-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-04-04 424-600-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-04-04 424-600-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-04-04 424-600-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-04-04 424-600-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-04-04 424-600-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-04-04 424-600-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-04-04 424-800-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C INGLEWOOD CA
2012-04-04 424-800-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C INGLEWOOD CA
2012-04-04 424-800-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C INGLEWOOD CA
2012-04-04 424-800-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C INGLEWOOD 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.