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
2011-04-27 562-888-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NORWALK CA
2011-04-23 562-732-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C LAKEWOOD CA
2011-04-23 562-766-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C LAKEWOOD CA
2011-04-12 562-320-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WHITTIER CA
2011-04-12 562-320-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WHITTIER CA
2011-04-12 562-666-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 ALAMITOS CA
2011-03-31 562-320-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C WHITTIER CA
2011-03-30 562-481-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D LONG BEACH CA
2011-03-30 562-528-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D LONG BEACH CA
2011-03-26 562-284-4XXX 4000–4999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L ALAMITOS CA
2011-03-24 562-735-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 ALAMITOS CA
2011-03-21 562-246-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D NORWALK CA
2011-03-15 562-283-3XXX 3000–3999Assigned CHARTER IP ENABLED SERVICES, LLC 792K LONG BEACH CA
2011-03-15 562-295-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 CMTN CMTN CA
2011-03-11 562-204-5XXX 5000–5999Assigned METROPCS NETWORKS, LLC 899D WHITTIER CA
2011-03-11 562-231-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D DOWNEY CA
2011-03-11 562-320-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D WHITTIER CA
2011-03-11 562-986-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D ALAMITOS CA
2011-03-08 562-340-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D ALAMITOS CA
2011-03-08 562-367-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D DOWNEY CA
2011-03-02 562-266-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LA HABRA CA
2011-02-24 562-343-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K ALAMITOS CA
2011-02-24 562-470-7XXX 7000–7999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CMTN CMTN CA
2011-02-17 562-281-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D NORWALK CA
2011-02-17 562-281-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D NORWALK CA
2011-02-17 562-443-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D CMTN CMTN CA
2011-02-17 562-607-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D LONG BEACH CA
2011-02-17 562-753-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D LONG BEACH CA
2011-02-17 562-753-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D LONG BEACH CA
2011-02-08 562-320-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WHITTIER CA
2011-02-08 562-677-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NORWALK CA
2011-02-07 562-528-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D LONG BEACH CA
2011-02-07 562-528-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D LONG BEACH CA
2011-01-26 562-353-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LAKEWOOD CA
2011-01-24 562-205-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E PICORIVERA CA
2011-01-24 562-231-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E DOWNEY CA
2011-01-24 562-264-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LONG BEACH CA
2011-01-24 562-277-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LONG BEACH CA
2011-01-24 562-344-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ALAMITOS CA
2011-01-24 562-344-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E ALAMITOS CA
2011-01-24 562-888-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NORWALK CA
2011-01-24 562-888-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E NORWALK CA
2011-01-14 562-371-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LA HABRA CA
2011-01-12 562-291-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D DOWNEY CA
2011-01-12 562-653-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D NORWALK CA
2011-01-11 562-204-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 WHITTIER CA
2011-01-11 562-453-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C LONG BEACH CA
2011-01-07 562-445-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 DOWNEY CA
2011-01-07 562-455-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 NORWALK CA
2011-01-04 562-641-4XXX 4000–4999Assigned PACIFIC BELL (COMPETITIVE) 7480 PICORIVERA 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.