NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

16 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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
2013-03-18 951-291-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F ELSINORE CA
2013-03-18 951-309-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SUN CITY CA
2013-03-18 951-363-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MORENO CA
2013-03-18 951-363-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MORENO CA
2013-03-18 951-566-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SUN CITY CA
2013-03-18 951-572-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BANNING CA
2013-03-18 951-651-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F HEMT SNJC CA
2013-03-18 951-800-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F WOODCREST CA
2013-03-18 951-923-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F HEMT HMLD CA
2013-03-18 951-923-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F HEMT HMLD CA
2013-03-14 951-338-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K TEMSCL CNY CA
2013-03-14 951-800-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K WOODCREST CA
2013-03-14 951-900-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K RIVERSIDE CA
2013-03-12 951-221-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C MORENO CA
2013-03-12 951-337-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C MORENO CA
2013-03-12 951-339-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K CORONA CA
2013-03-12 951-643-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K ARLINGTON CA
2013-03-12 951-923-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K HEMT HMLD CA
2013-03-07 951-267-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BANNING CA
2013-03-05 951-262-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F HEMT ANZA CA
2013-03-05 951-319-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MURRIETA CA
2013-03-05 951-339-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CORONA CA
2013-03-05 951-349-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PERRIS CA
2013-03-05 951-364-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F HEMT SAGE CA
2013-03-05 951-527-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F IDYLLWILD CA
2013-03-05 951-749-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F MIRA LOMA CA
2013-03-04 951-327-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 HEMT SNJC CA
2013-03-01 951-228-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C ELSINORE CA
2013-03-01 951-319-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C MURRIETA CA
2013-03-01 951-327-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C HEMT SNJC CA
2013-03-01 951-338-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C TEMSCL CNY CA
2013-03-01 951-339-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C CORONA CA
2013-03-01 951-355-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C PERRIS CA
2013-03-01 951-364-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C HEMT SAGE CA
2013-03-01 951-383-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C TEMECULA CA
2013-03-01 951-389-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C HEMT ANZA CA
2013-03-01 951-468-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C IDYLLWILD CA
2013-03-01 951-602-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C ARLINGTON CA
2013-03-01 951-916-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C LAKEVIEWNU CA
2013-02-22 951-223-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HEMT HMLD CA
2013-02-22 951-325-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HEMT HMLD CA
2013-02-22 951-325-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HEMT HMLD CA
2013-02-21 951-339-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CORONA CA
2013-02-21 951-349-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2013-02-21 951-349-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2013-02-21 951-349-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2013-02-21 951-349-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 PERRIS CA
2013-02-21 951-349-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D PERRIS CA
2013-02-20 951-663-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HEMT HEMT CA
2013-02-11 951-309-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SUN CITY CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.