NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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 562
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
2011-09-02 562-485-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LONG BEACH CA
2011-09-01 562-364-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 PICORIVERA CA
2011-08-23 562-445-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 DOWNEY CA
2011-08-23 562-888-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NORWALK CA
2011-08-17 562-387-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ALAMITOS CA
2011-08-05 562-371-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LA HABRA CA
2011-08-05 562-417-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 DOWNEY CA
2011-08-05 562-977-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NORWALK CA
2011-07-27 562-608-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 LAKEWOOD CA
2011-07-19 562-287-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E DOWNEY CA
2011-07-19 562-315-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LA HABRA CA
2011-07-19 562-387-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ALAMITOS CA
2011-07-19 562-387-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ALAMITOS CA
2011-07-15 562-298-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D WHITTIER CA
2011-07-13 562-204-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WHITTIER CA
2011-07-13 562-250-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C DOWNEY CA
2011-07-01 562-888-7XXX 7000–7999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NORWALK CA
2011-06-29 562-228-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NORWALK CA
2011-06-29 562-267-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LA HABRA CA
2011-06-29 562-450-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E DOWNEY CA
2011-06-29 562-450-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E DOWNEY CA
2011-06-23 562-999-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LONG BEACH CA
2011-06-21 562-640-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LA HABRA CA
2011-06-20 562-485-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C LONG BEACH CA
2011-06-13 562-347-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D WHITTIER CA
2011-06-09 562-888-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 NORWALK CA
2011-06-03 562-370-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ALAMITOS CA
2011-06-03 562-666-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ALAMITOS CA
2011-06-01 562-735-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ALAMITOS CA
2011-06-01 562-735-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALAMITOS CA
2011-05-26 562-231-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E DOWNEY CA
2011-05-26 562-265-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LA HABRA CA
2011-05-26 562-395-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PICORIVERA CA
2011-05-26 562-666-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ALAMITOS CA
2011-05-26 562-666-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ALAMITOS CA
2011-05-24 562-455-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NORWALK CA
2011-05-24 562-907-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WHITTIER CA
2011-05-17 562-758-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 WHITTIER CA
2011-05-03 562-758-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K WHITTIER CA
2011-04-27 562-283-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LONG BEACH CA
2011-04-27 562-283-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LONG BEACH CA
2011-04-27 562-353-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LAKEWOOD CA
2011-04-27 562-457-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WHITTIER CA
2011-04-27 562-457-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WHITTIER CA
2011-04-27 562-485-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LONG BEACH CA
2011-04-27 562-528-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LONG BEACH CA
2011-04-27 562-567-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WHITTIER CA
2011-04-27 562-888-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NORWALK CA
2011-04-27 562-888-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NORWALK CA
2011-04-27 562-888-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NORWALK 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.