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
2018-11-30 323-402-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C LSAN DA 11 CA
2018-11-30 323-405-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C LSAN DA 04 CA
2018-11-30 323-591-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C LSAN DA 13 CA
2018-11-30 323-622-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C MONTEBELLO CA
2018-11-30 323-622-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C MONTEBELLO CA
2018-11-30 323-747-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C LSAN DA 03 CA
2018-11-30 323-817-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C LSAN DA 14 CA
2018-11-30 323-916-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C LSAN DA 03 CA
2018-11-30 323-916-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C LSAN DA 03 CA
2018-11-30 323-916-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LSAN DA 03 CA
2018-11-30 323-955-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C LSAN DA 13 CA
2018-11-30 323-970-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C LSAN DA 09 CA
2018-11-30 323-970-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C LSAN DA 09 CA
2018-11-30 323-970-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C LSAN DA 09 CA
2018-11-30 323-987-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C LSAN DA 04 CA
2018-11-30 323-990-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C LSAN DA 04 CA
2018-11-30 323-991-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C LSAN DA 08 CA
2018-11-30 323-991-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C LSAN DA 08 CA
2018-11-30 323-991-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C LSAN DA 08 CA
2018-11-14 323-709-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LSAN DA 11 CA
2018-11-14 323-916-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LSAN DA 03 CA
2018-11-14 323-970-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LSAN DA 09 CA
2018-11-09 323-797-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2018-11-09 323-827-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2018-10-19 323-970-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LSAN DA 09 CA
2018-10-19 323-970-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LSAN DA 09 CA
2018-10-17 323-818-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LSAN DA 03 CA
2018-10-17 323-905-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LSAN DA 09 CA
2018-10-17 323-916-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LSAN DA 03 CA
2018-10-17 323-925-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LSAN DA 03 CA
2018-10-11 323-247-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2018-10-11 323-247-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2018-10-11 323-370-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 13 CA
2018-10-11 323-425-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 06 CA
2018-10-11 323-499-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 14 CA
2018-10-09 323-910-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LSAN DA 14 CA
2018-10-08 323-991-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LSAN DA 08 CA
2018-10-04 323-853-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MONTEBELLO CA
2018-10-01 323-208-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K LSAN DA 09 CA
2018-09-25 323-289-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LSAN DA 12 CA
2018-09-12 323-763-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 LSAN DA 06 CA
2018-08-31 323-709-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 LSAN DA 11 CA
2018-08-22 323-991-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K LSAN DA 08 CA
2018-08-07 323-516-0XXX 0000–0999Assigned CHARTER IP ENABLED SERVICES, LLC 792K MONTEBELLO CA
2018-08-01 323-601-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C LSAN DA 12 CA
2018-08-01 323-642-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C LSAN DA 12 CA
2018-07-18 323-814-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K LSAN DA 09 CA
2018-06-08 323-272-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 13 CA
2018-06-08 323-381-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D LSAN DA 13 CA
2018-05-23 323-827-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J 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.