NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

17 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 424
ONVOY, LLC - CA 15
OPENTACT INC. 1
NEW CINGULAR WIRELESS PCS, LLC 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
2011-02-25 424-272-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 SNMN SNMN CA
2011-02-19 424-888-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 INGLEWOOD CA
2011-02-17 424-247-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C REDONDO CA
2011-02-10 424-269-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K HAWTHORNE CA
2011-02-10 424-269-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K HAWTHORNE CA
2011-02-07 424-240-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D HAWTHORNE CA
2011-02-07 424-268-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNMN SNMN CA
2011-02-07 424-268-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNMN SNMN CA
2011-02-07 424-702-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D INGLEWOOD CA
2011-02-04 424-738-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C AVALON CA
2011-01-21 424-666-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BEVERLYHLS CA
2011-01-21 424-777-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BEVERLYHLS CA
2011-01-20 424-652-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E W ANGELES CA
2011-01-19 424-213-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2011-01-19 424-213-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2011-01-19 424-250-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LOMITA CA
2011-01-19 424-255-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HAWTHORNE CA
2011-01-19 424-255-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HAWTHORNE CA
2011-01-19 424-477-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAN PEDRO CA
2011-01-19 424-625-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN MRVS CA
2011-01-19 424-625-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN MRVS CA
2011-01-19 424-704-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2011-01-19 424-772-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SAN PEDRO CA
2011-01-19 424-999-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E TORRANCE CA
2011-01-14 424-266-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CMTN GRDN CA
2011-01-11 424-255-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HAWTHORNE CA
2011-01-11 424-266-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D CMTN GRDN CA
2010-12-28 424-777-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K BEVERLYHLS CA
2010-12-22 424-268-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN SNMN CA
2010-12-22 424-400-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDONDO CA
2010-12-22 424-543-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CULVERCITY CA
2010-12-21 424-268-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C SNMN SNMN CA
2010-12-16 424-271-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 TORRANCE CA
2010-12-15 424-231-9XXX 9000–9999Assigned PACIFIC BELL (COMPETITIVE) 7480 SNMN SNMN CA
2010-12-13 424-231-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNMN SNMN CA
2010-12-13 424-231-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNMN SNMN CA
2010-12-13 424-400-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDONDO CA
2010-12-13 424-738-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E AVALON CA
2010-12-07 424-220-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EL SEGUNDO CA
2010-12-03 424-256-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E W ANGELES CA
2010-12-03 424-256-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E W ANGELES CA
2010-11-30 424-666-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2010-11-30 424-666-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2010-11-30 424-738-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C AVALON CA
2010-11-23 424-269-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 HAWTHORNE CA
2010-11-22 424-267-0XXX 0000–0999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 SAN PEDRO CA
2010-11-22 424-268-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNMN SNMN CA
2010-11-22 424-268-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNMN SNMN CA
2010-11-18 424-400-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDONDO CA
2010-11-18 424-400-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDONDO 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.