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
2021-07-02 951-517-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C TEMECULA CA
2021-07-02 951-517-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C TEMECULA CA
2021-07-02 951-540-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C LAKEVIEWNU CA
2021-07-02 951-540-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C LAKEVIEWNU CA
2021-07-02 951-546-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C TEMSCL CNY CA
2021-07-02 951-546-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C TEMSCL CNY CA
2021-07-02 951-574-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C MURRIETA CA
2021-07-02 951-574-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C MURRIETA CA
2021-07-02 951-574-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C MURRIETA CA
2021-07-02 951-574-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C MURRIETA CA
2021-07-02 951-576-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C WOODCREST CA
2021-07-02 951-576-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C WOODCREST CA
2021-07-02 951-576-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C WOODCREST CA
2021-07-02 951-576-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C WOODCREST CA
2021-07-02 951-577-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C CORONA CA
2021-07-02 951-577-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C CORONA CA
2021-07-02 951-577-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C CORONA CA
2021-07-02 951-577-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C CORONA CA
2021-07-02 951-580-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C PERRIS CA
2021-07-02 951-580-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C PERRIS CA
2021-07-02 951-584-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C RIVERSIDE CA
2021-07-02 951-584-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C RIVERSIDE CA
2021-07-02 951-584-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C RIVERSIDE CA
2021-07-02 951-584-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C RIVERSIDE CA
2021-07-02 951-629-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C HEMT SNJC CA
2021-07-02 951-629-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C HEMT SNJC CA
2021-07-02 951-629-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C HEMT SNJC CA
2021-07-02 951-629-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C HEMT SNJC CA
2021-07-02 951-633-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C HEMT HEMT CA
2021-07-02 951-633-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C HEMT HEMT CA
2021-07-02 951-633-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C HEMT HEMT CA
2021-07-02 951-724-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C HEMT HMLD CA
2021-07-02 951-724-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C HEMT HMLD CA
2021-07-02 951-799-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C HEMT ANZA CA
2021-07-02 951-844-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C IDYLLWILD CA
2021-06-24 951-629-6XXX 6000–6999Assigned VONAGE AMERICA LLC 197D HEMT SNJC CA
2021-06-23 951-407-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H CORONA CA
2021-06-23 951-516-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H SUN CITY CA
2021-06-23 951-517-8XXX 8000–8999Assigned ONVOY SPECTRUM, LLC 624H TEMECULA CA
2021-06-23 951-574-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H MURRIETA CA
2021-06-23 951-578-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H ARLINGTON CA
2021-06-23 951-844-6XXX 6000–6999Assigned ONVOY SPECTRUM, LLC 624H IDYLLWILD CA
2021-06-16 951-569-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2021-06-16 951-569-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2021-06-16 951-569-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2021-06-16 951-580-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2021-06-16 951-580-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2021-06-16 951-580-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2021-06-14 951-580-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PERRIS CA
2021-06-08 951-508-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 CORONA 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.