NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

27 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 951
ONVOY, LLC - CA 25
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 1
BANDWIDTH.COM CLEC, 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
2023-10-02 951-646-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C TEMSCL CNY CA
2023-10-02 951-646-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C TEMSCL CNY CA
2023-10-02 951-646-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C TEMSCL CNY CA
2023-10-02 951-646-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C TEMSCL CNY CA
2023-10-02 951-648-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C WOODCREST CA
2023-10-02 951-648-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C WOODCREST CA
2023-10-02 951-648-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C WOODCREST CA
2023-10-02 951-648-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C WOODCREST CA
2023-10-02 951-648-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C WOODCREST CA
2023-10-02 951-648-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C WOODCREST CA
2023-10-02 951-648-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C WOODCREST CA
2023-10-02 951-649-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C ARLINGTON CA
2023-10-02 951-664-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PERRIS CA
2023-10-02 951-669-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C HEMT HEMT CA
2023-10-01 951-615-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SUN CITY CA
2023-10-01 951-636-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CORONA CA
2023-09-26 951-649-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ARLINGTON CA
2023-09-26 951-649-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARLINGTON CA
2023-09-25 951-635-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MURRIETA CA
2023-09-25 951-635-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MURRIETA CA
2023-09-25 951-641-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 HEMT HEMT CA
2023-09-25 951-641-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 HEMT HEMT CA
2023-09-25 951-641-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 HEMT HEMT CA
2023-09-25 951-641-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 HEMT HEMT CA
2023-09-25 951-647-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2023-09-25 951-647-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2023-09-25 951-647-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2023-09-25 951-647-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2023-09-25 951-647-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2023-08-29 951-648-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 WOODCREST CA
2023-08-24 951-610-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PERRIS CA
2023-08-23 951-630-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2023-08-23 951-630-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2023-08-23 951-632-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 HEMT SNJC CA
2023-08-16 951-608-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MIRA LOMA CA
2023-08-16 951-641-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C HEMT HEMT CA
2023-08-16 951-641-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C HEMT HEMT CA
2023-08-16 951-641-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C HEMT HEMT CA
2023-08-16 951-641-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C HEMT HEMT CA
2023-08-16 951-647-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C MORENO CA
2023-08-16 951-647-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C MORENO CA
2023-08-16 951-647-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C MORENO CA
2023-08-15 951-556-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C ARLINGTON CA
2023-08-15 951-608-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C MIRA LOMA CA
2023-08-15 951-624-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C ARLINGTON CA
2023-08-15 951-624-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C ARLINGTON CA
2023-08-15 951-635-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MURRIETA CA
2023-08-11 951-645-0XXX 0000–0999Assigned COMMIO, LLC 939H LAKEVIEWNU CA
2023-08-11 951-645-1XXX 1000–1999Assigned COMMIO, LLC 939H LAKEVIEWNU CA
2023-08-11 951-645-2XXX 2000–2999Assigned COMMIO, LLC 939H LAKEVIEWNU 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.