NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

1 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 323
ONVOY, LLC - CA 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
2012-11-16 323-483-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2012-11-16 323-483-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2012-11-16 323-483-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2012-11-16 323-483-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2012-11-09 323-426-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LSAN DA 02 CA
2012-11-09 323-473-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C LSAN DA 02 CA
2012-11-07 323-487-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2012-11-07 323-487-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2012-11-07 323-487-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2012-11-07 323-487-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2012-11-02 323-388-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2012-11-02 323-388-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2012-11-02 323-438-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2012-10-30 323-379-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 04 CA
2012-10-30 323-448-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 09 CA
2012-10-30 323-448-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 09 CA
2012-10-30 323-682-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 03 CA
2012-10-30 323-739-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 03 CA
2012-10-30 323-776-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 09 CA
2012-10-30 323-909-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 04 CA
2012-10-30 323-942-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 LSAN DA 09 CA
2012-10-30 323-967-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 09 CA
2012-10-30 323-977-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 09 CA
2012-10-30 323-992-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 09 CA
2012-10-29 323-452-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K LSAN DA 13 CA
2012-10-25 323-629-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MONTEBELLO CA
2012-10-19 323-332-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K LSAN DA 04 CA
2012-10-19 323-480-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J MONTEBELLO CA
2012-10-17 323-475-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C LSAN DA 05 CA
2012-10-12 323-452-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LSAN DA 13 CA
2012-10-03 323-480-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C MONTEBELLO CA
2012-10-02 323-480-5XXX 5000–5999Assigned METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2012-10-02 323-480-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2012-10-02 323-480-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2012-10-01 323-483-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2012-10-01 323-483-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2012-09-19 323-452-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 13 CA
2012-09-19 323-452-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 13 CA
2012-09-19 323-477-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MONTEBELLO CA
2012-09-19 323-480-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MONTEBELLO CA
2012-09-19 323-790-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 14 CA
2012-09-19 323-790-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 14 CA
2012-09-19 323-790-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 14 CA
2012-09-19 323-790-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 14 CA
2012-09-19 323-872-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 14 CA
2012-09-12 323-904-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C LSAN DA 13 CA
2012-09-11 323-208-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 09 CA
2012-09-11 323-305-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 09 CA
2012-09-11 323-305-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 09 CA
2012-09-11 323-305-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 09 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.