NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

25 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 858
ONVOY, LLC - CA 20
EXIANT COMMUNICATIONS LLC 2
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 1
NEW CINGULAR WIRELESS PCS, LLC 1
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - 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
2012-10-05 858-360-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C RNCHOPNQTS CA
2012-10-04 858-249-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LA JOLLA CA
2012-10-04 858-249-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LA JOLLA CA
2012-10-01 858-541-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNDG LVTA CA
2012-10-01 858-564-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNDG MRMS CA
2012-10-01 858-564-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNDG MRMS CA
2012-10-01 858-564-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNDG MRMS CA
2012-10-01 858-564-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNDG MRMS CA
2012-10-01 858-564-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNDG MRMS CA
2012-10-01 858-598-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNDG LVTA CA
2012-10-01 858-598-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNDG LVTA CA
2012-10-01 858-751-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNDG LVTA CA
2012-09-28 858-751-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C SNDG LVTA CA
2012-09-27 858-500-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LA JOLLA CA
2012-09-27 858-900-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LA JOLLA CA
2012-09-21 858-314-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 DEL MAR CA
2012-09-19 858-900-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LA JOLLA CA
2012-09-18 858-666-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C LA JOLLA CA
2012-09-07 858-216-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E RNCHOPNQTS CA
2012-08-23 858-800-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SNDG MRMS CA
2012-08-23 858-924-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L RNCHOBRNDO CA
2012-08-20 858-244-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C SNDG LVTA CA
2012-08-14 858-717-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNDG LVTA CA
2012-08-13 858-500-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LA JOLLA CA
2012-08-13 858-500-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LA JOLLA CA
2012-08-13 858-524-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 RNCHOBRNDO CA
2012-08-13 858-829-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E POWAY CA
2012-08-13 858-859-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E POWAY CA
2012-08-13 858-877-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG MRMS CA
2012-08-13 858-956-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E POWAY CA
2012-08-03 858-230-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LA JOLLA CA
2012-08-03 858-314-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 DEL MAR CA
2012-08-03 858-609-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNDG LVTA CA
2012-08-03 858-762-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 POWAY CA
2012-08-03 858-800-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNDG MRMS CA
2012-07-26 858-831-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNDG MRMS CA
2012-07-24 858-500-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LA JOLLA CA
2012-07-02 858-251-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LA JOLLA CA
2012-07-02 858-251-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LA JOLLA CA
2012-07-02 858-251-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LA JOLLA CA
2012-07-02 858-251-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LA JOLLA CA
2012-07-02 858-251-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LA JOLLA CA
2012-07-02 858-251-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LA JOLLA CA
2012-07-02 858-251-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LA JOLLA CA
2012-07-02 858-251-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LA JOLLA CA
2012-07-02 858-251-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LA JOLLA CA
2012-07-02 858-251-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LA JOLLA CA
2012-07-02 858-500-8XXX 8000–8999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LA JOLLA CA
2012-07-02 858-649-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L RNCHOBRNDO CA
2012-06-28 858-381-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 RNCHOSANFE 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.