NumberResearch Membership · Data 09/19/2026

Recent thousands-block assignments

34 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/19/2026

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 442
NEW CINGULAR WIRELESS PCS, LLC 14
ONVOY, LLC - CA 10
HD CARRIER LLC 4
PEERLESS NETWORK OF CALIFORNIA, LLC - CA 2
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 2
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
2012-12-03 442-281-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C ESCONDIDO CA
2012-12-03 442-900-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C OCOTILLO CA
2012-11-16 442-666-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PALMDESERT CA
2012-11-15 442-666-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 PALMDESERT CA
2012-11-12 442-900-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C OCOTILLO CA
2012-10-17 442-281-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ESCONDIDO CA
2012-10-11 442-200-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CALEXICO CA
2012-10-08 442-600-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C VTVL HSPR CA
2012-09-28 442-666-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D PALMDESERT CA
2012-09-20 442-200-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C CALEXICO CA
2012-09-20 442-200-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C CALEXICO CA
2012-09-17 442-600-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C VTVL HSPR CA
2012-09-10 442-800-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D VTVL HSPR CA
2012-08-14 442-242-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VICTORVL CA
2012-08-03 442-888-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 OCSD OCSD CA
2012-08-03 442-888-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OCSD OCSD CA
2012-08-01 442-800-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C VTVL HSPR CA
2012-07-30 442-800-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C VTVL HSPR CA
2012-07-26 442-888-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OCSD OCSD CA
2012-07-26 442-888-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 OCSD OCSD CA
2012-07-20 442-666-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C PALMDESERT CA
2012-07-02 442-223-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NEWBERRY CA
2012-07-02 442-223-2XXX 2000–2999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NEWBERRY CA
2012-07-02 442-223-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NEWBERRY CA
2012-07-02 442-223-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NEWBERRY CA
2012-07-02 442-223-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NEWBERRY CA
2012-07-02 442-223-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NEWBERRY CA
2012-07-02 442-223-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NEWBERRY CA
2012-07-02 442-223-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NEWBERRY CA
2012-07-02 442-223-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F NEWBERRY CA
2012-06-05 442-242-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VICTORVL CA
2012-05-10 442-242-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E VICTORVL CA
2012-05-01 442-281-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ESCONDIDO CA
2012-03-20 442-888-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F OCSD OCSD CA
2012-03-08 442-333-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K OCSD OCSD CA
2011-12-30 442-281-1XXX 1000–1999Assigned PACIFIC BELL 9740 ESCONDIDO CA
2011-12-30 442-281-2XXX 2000–2999Assigned PACIFIC BELL 9740 ESCONDIDO CA
2011-12-30 442-281-3XXX 3000–3999Assigned PACIFIC BELL 9740 ESCONDIDO CA
2011-12-30 442-281-4XXX 4000–4999Assigned PACIFIC BELL 9740 ESCONDIDO CA
2011-12-30 442-281-5XXX 5000–5999Assigned PACIFIC BELL 9740 ESCONDIDO CA
2011-12-23 442-333-8XXX 8000–8999Assigned METROPCS, INC. 5562 OCSD OCSD CA
2011-11-17 442-888-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 OCSD OCSD CA
2011-11-04 442-242-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VICTORVL CA
2011-11-04 442-242-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VICTORVL CA
2011-10-12 442-333-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 OCSD OCSD CA
2011-09-01 442-333-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 OCSD OCSD CA
2011-09-01 442-999-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ESCONDIDO CA
2011-07-26 442-999-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C ESCONDIDO CA
2011-07-19 442-333-5XXX 5000–5999Assigned METROPCS, INC. 5562 OCSD OCSD CA
2011-07-19 442-444-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E FALLBROOK CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.