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
2014-11-05 323-641-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 11 CA
2014-11-05 323-643-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 11 CA
2014-11-05 323-643-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 11 CA
2014-11-05 323-746-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 13 CA
2014-11-05 323-746-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 13 CA
2014-11-05 323-746-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 13 CA
2014-11-05 323-746-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 13 CA
2014-11-05 323-844-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 08 CA
2014-11-05 323-844-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 08 CA
2014-11-05 323-985-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 08 CA
2014-11-04 323-631-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2014-11-04 323-631-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2014-11-04 323-631-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2014-11-04 323-631-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2014-11-04 323-631-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2014-11-04 323-631-5XXX 5000–5999Assigned METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2014-11-04 323-631-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2014-11-04 323-631-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2014-11-04 323-631-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2014-11-04 323-631-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D MONTEBELLO CA
2014-11-04 323-672-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2014-11-04 323-672-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LSAN DA 14 CA
2014-11-04 323-675-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 03 CA
2014-10-30 323-515-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 08 CA
2014-10-30 323-597-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MONTEBELLO CA
2014-10-30 323-672-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 14 CA
2014-10-30 323-694-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 02 CA
2014-10-30 323-723-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 05 CA
2014-10-30 323-886-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2014-10-30 323-886-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2014-10-30 323-886-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2014-10-30 323-886-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2014-10-30 323-886-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2014-10-30 323-886-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2014-10-30 323-886-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2014-10-30 323-886-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2014-10-30 323-886-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2014-10-30 323-886-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2014-10-29 323-672-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C LSAN DA 14 CA
2014-10-29 323-672-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C LSAN DA 14 CA
2014-10-29 323-772-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C LSAN DA 09 CA
2014-10-29 323-772-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C LSAN DA 09 CA
2014-10-27 323-553-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LSAN DA 06 CA
2014-10-21 323-553-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LSAN DA 06 CA
2014-10-21 323-673-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LSAN DA 03 CA
2014-10-21 323-686-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K LSAN DA 04 CA
2014-10-20 323-694-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LSAN DA 02 CA
2014-10-20 323-746-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J LSAN DA 13 CA
2014-10-17 323-597-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2014-10-17 323-597-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO 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.