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
2021-11-17 951-598-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ARLINGTON CA
2021-11-17 951-904-9XXX 9000–9999Assigned ONVOY SPECTRUM, LLC 624H TEMECULA CA
2021-11-10 951-594-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2021-11-10 951-594-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 MORENO CA
2021-11-09 951-597-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CORONA CA
2021-11-09 951-597-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CORONA CA
2021-11-04 951-592-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C RIVERSIDE CA
2021-11-04 951-592-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C RIVERSIDE CA
2021-11-04 951-875-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C BANNING CA
2021-11-04 951-875-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C BANNING CA
2021-10-20 951-889-1XXX 1000–1999Assigned ONVOY SPECTRUM, LLC 624H TEMECULA CA
2021-10-20 951-889-2XXX 2000–2999Assigned ONVOY SPECTRUM, LLC 624H TEMECULA CA
2021-10-20 951-889-3XXX 3000–3999Assigned ONVOY SPECTRUM, LLC 624H TEMECULA CA
2021-10-20 951-889-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H TEMECULA CA
2021-10-20 951-889-5XXX 5000–5999Assigned ONVOY SPECTRUM, LLC 624H TEMECULA CA
2021-10-19 951-589-4XXX 4000–4999Assigned ONVOY SPECTRUM, LLC 624H RIVERSIDE CA
2021-10-14 951-844-7XXX 7000–7999Assigned ONVOY SPECTRUM, LLC 624H IDYLLWILD CA
2021-10-08 951-540-9XXX 9000–9999Assigned TELNYX LLC 073H LAKEVIEWNU CA
2021-10-08 951-576-6XXX 6000–6999Assigned TELNYX LLC 073H WOODCREST CA
2021-10-05 951-324-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 ARLINGTON CA
2021-09-29 951-481-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WOODCREST CA
2021-09-29 951-576-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WOODCREST CA
2021-09-24 951-622-2XXX 2000–2999Assigned FRACTEL, LLC 965H MIRA LOMA CA
2021-09-24 951-889-9XXX 9000–9999Assigned FRACTEL, LLC 965H TEMECULA CA
2021-09-24 951-910-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HEMT SAGE CA
2021-09-22 951-627-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2021-09-22 951-627-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2021-09-22 951-627-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2021-09-16 951-444-2XXX 2000–2999Assigned COMMIO, LLC 939H CORONA CA
2021-09-16 951-444-3XXX 3000–3999Assigned COMMIO, LLC 939H CORONA CA
2021-09-16 951-508-3XXX 3000–3999Assigned COMMIO, LLC 939H CORONA CA
2021-09-16 951-523-1XXX 1000–1999Assigned COMMIO, LLC 939H CORONA CA
2021-09-16 951-569-0XXX 0000–0999Assigned COMMIO, LLC 939H MORENO CA
2021-09-16 951-569-1XXX 1000–1999Assigned COMMIO, LLC 939H MORENO CA
2021-09-16 951-569-9XXX 9000–9999Assigned COMMIO, LLC 939H MORENO CA
2021-09-16 951-583-5XXX 5000–5999Assigned COMMIO, LLC 939H ELSINORE CA
2021-09-16 951-583-6XXX 6000–6999Assigned COMMIO, LLC 939H ELSINORE CA
2021-09-16 951-583-7XXX 7000–7999Assigned COMMIO, LLC 939H ELSINORE CA
2021-09-16 951-583-8XXX 8000–8999Assigned COMMIO, LLC 939H ELSINORE CA
2021-09-16 951-944-5XXX 5000–5999Assigned COMMIO, LLC 939H ARLINGTON CA
2021-09-16 951-944-7XXX 7000–7999Assigned COMMIO, LLC 939H ARLINGTON CA
2021-09-15 951-589-3XXX 3000–3999Assigned TELNYX LLC 073H RIVERSIDE CA
2021-09-13 951-589-0XXX 0000–0999Assigned COMMIO, LLC 939H RIVERSIDE CA
2021-09-13 951-589-1XXX 1000–1999Assigned COMMIO, LLC 939H RIVERSIDE CA
2021-09-13 951-589-2XXX 2000–2999Assigned COMMIO, LLC 939H RIVERSIDE CA
2021-09-13 951-844-1XXX 1000–1999Assigned COMMIO, LLC 939H IDYLLWILD CA
2021-09-13 951-844-2XXX 2000–2999Assigned COMMIO, LLC 939H IDYLLWILD CA
2021-09-13 951-844-9XXX 9000–9999Assigned COMMIO, LLC 939H IDYLLWILD CA
2021-09-09 951-514-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C TEMECULA CA
2021-09-09 951-528-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C TEMECULA 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.