NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

16 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 14
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
2018-10-02 951-386-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 WOODCREST CA
2018-10-01 951-459-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F ELSINORE CA
2018-09-28 951-382-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K TEMSCL CNY CA
2018-09-25 951-366-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LAKEVIEWNU CA
2018-09-25 951-414-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F TEMECULA CA
2018-09-25 951-439-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F HEMT SAGE CA
2018-09-25 951-450-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PERRIS CA
2018-09-25 951-460-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CORONA CA
2018-09-25 951-502-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F HEMT HEMT CA
2018-09-25 951-518-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MORENO CA
2018-09-10 951-755-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BANNING CA
2018-09-05 951-414-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C TEMECULA CA
2018-09-05 951-417-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C MURRIETA CA
2018-09-05 951-433-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C TEMSCL CNY CA
2018-09-05 951-450-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C PERRIS CA
2018-09-05 951-459-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C ELSINORE CA
2018-09-05 951-518-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C MORENO CA
2018-09-05 951-934-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C MIRA LOMA CA
2018-09-05 951-981-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C LAKEVIEWNU CA
2018-08-23 951-394-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2018-08-23 951-394-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2018-08-21 951-470-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ARLINGTON CA
2018-08-17 951-441-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ARLINGTON CA
2018-08-13 951-460-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J CORONA CA
2018-08-06 951-475-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CORONA CA
2018-08-02 951-262-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F HEMT ANZA CA
2018-07-31 951-777-1XXX 1000–1999Assigned CHARTER IP ENABLED SERVICES, LLC 792K RIVERSIDE CA
2018-07-12 951-373-8XXX 8000–8999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ARLINGTON CA
2018-07-12 951-393-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D CORONA CA
2018-06-28 951-524-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C BANNING CA
2018-06-21 951-393-1XXX 1000–1999Assigned TELNYX LLC 073H CORONA CA
2018-06-21 951-439-3XXX 3000–3999Assigned TELNYX LLC 073H HEMT SAGE CA
2018-06-21 951-518-9XXX 9000–9999Assigned TELNYX LLC 073H MORENO CA
2018-06-13 951-758-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 RIVERSIDE CA
2018-06-08 951-466-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 TEMECULA CA
2018-06-08 951-524-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C BANNING CA
2018-06-08 951-524-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C BANNING CA
2018-05-16 951-460-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CORONA CA
2018-05-16 951-502-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HEMT HEMT CA
2018-05-14 951-414-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E TEMECULA CA
2018-05-14 951-429-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WOODCREST CA
2018-05-11 951-512-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E RIVERSIDE CA
2018-05-09 951-451-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D HEMT SNJC CA
2018-05-07 951-783-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D RIVERSIDE CA
2018-05-04 951-450-5XXX 5000–5999Assigned INTEGRATED PATH COMMUNICATIONS, LLC - CA 707H PERRIS CA
2018-05-01 951-419-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D MORENO CA
2018-04-26 951-262-6XXX 6000–6999Assigned INTEGRATED PATH COMMUNICATIONS, LLC - CA 707H HEMT ANZA CA
2018-04-26 951-366-6XXX 6000–6999Assigned INTEGRATED PATH COMMUNICATIONS, LLC - CA 707H LAKEVIEWNU CA
2018-04-26 951-416-6XXX 6000–6999Assigned INTEGRATED PATH COMMUNICATIONS, LLC - CA 707H MIRA LOMA CA
2018-04-26 951-417-3XXX 3000–3999Assigned INTEGRATED PATH COMMUNICATIONS, LLC - CA 707H MURRIETA 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.