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
2010-08-09 562-452-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LAKEWOOD CA
2010-08-05 562-856-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 ALAMITOS CA
2010-07-30 562-391-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ALAMITOS CA
2010-07-30 562-391-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 ALAMITOS CA
2010-07-16 562-344-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 ALAMITOS CA
2010-07-16 562-344-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 ALAMITOS CA
2010-07-15 562-376-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D NORWALK CA
2010-07-06 562-409-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NORWALK CA
2010-07-06 562-565-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NORWALK CA
2010-06-29 562-259-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D CMTN CMTN CA
2010-06-17 562-321-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WHITTIER CA
2010-06-16 562-661-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C LONG BEACH CA
2010-06-16 562-805-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 DOWNEY CA
2010-06-01 562-513-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LONG BEACH CA
2010-05-28 562-284-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 ALAMITOS CA
2010-05-28 562-314-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 ALAMITOS CA
2010-05-27 562-245-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LA HABRA CA
2010-05-27 562-263-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NORWALK CA
2010-05-27 562-263-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NORWALK CA
2010-05-27 562-281-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NORWALK CA
2010-05-27 562-282-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NORWALK CA
2010-05-27 562-353-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LAKEWOOD CA
2010-05-27 562-373-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PICORIVERA CA
2010-05-27 562-449-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ALAMITOS CA
2010-05-27 562-449-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ALAMITOS CA
2010-05-27 562-543-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2010-05-27 562-543-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2010-05-27 562-543-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2010-05-27 562-543-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2010-05-27 562-661-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LONG BEACH CA
2010-05-27 562-661-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LONG BEACH CA
2010-05-27 562-684-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LONG BEACH CA
2010-05-27 562-684-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LONG BEACH CA
2010-05-27 562-774-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E DOWNEY CA
2010-05-27 562-774-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E DOWNEY CA
2010-05-27 562-967-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WHITTIER CA
2010-05-27 562-968-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WHITTIER CA
2010-05-10 562-513-7XXX 7000–7999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 LONG BEACH CA
2010-04-23 562-365-6XXX 6000–6999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LA HABRA CA
2010-04-23 562-444-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LAKEWOOD CA
2010-04-13 562-354-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LAKEWOOD CA
2010-04-02 562-251-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D CMTN CMTN CA
2010-03-31 562-217-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LA HABRA CA
2010-03-31 562-246-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NORWALK CA
2010-03-31 562-250-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E DOWNEY CA
2010-03-31 562-320-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E WHITTIER CA
2010-03-31 562-340-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ALAMITOS CA
2010-03-31 562-373-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PICORIVERA CA
2010-03-16 562-280-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D ALAMITOS CA
2010-03-16 562-286-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ALAMITOS 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.