NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

12 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 10
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
2013-05-28 424-293-4XXX 4000–4999Assigned PAETEC ITEL, LLC 829J W ANGELES CA
2013-05-24 424-209-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CULVERCITY CA
2013-05-24 424-292-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CMTN GRDN CA
2013-05-24 424-295-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CMTN GRDN CA
2013-05-24 424-332-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2013-05-23 424-293-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 W ANGELES CA
2013-05-20 424-332-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2013-05-10 424-290-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C EL SEGUNDO CA
2013-05-08 424-672-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CULVERCITY CA
2013-05-07 424-290-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 EL SEGUNDO CA
2013-04-26 424-290-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J EL SEGUNDO CA
2013-04-26 424-331-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E INGLEWOOD CA
2013-04-25 424-732-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E INGLEWOOD CA
2013-04-25 424-732-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E INGLEWOOD CA
2013-04-24 424-293-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J W ANGELES CA
2013-04-17 424-291-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNMN SNMN CA
2013-04-15 424-465-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 W ANGELES CA
2013-04-11 424-288-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2013-04-05 424-284-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2013-04-05 424-284-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2013-04-05 424-285-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2013-04-05 424-297-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HAWTHORNE CA
2013-04-03 424-287-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SAN PEDRO CA
2013-04-03 424-287-3XXX 3000–3999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SAN PEDRO CA
2013-04-03 424-291-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNMN SNMN CA
2013-04-03 424-291-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F SNMN SNMN CA
2013-04-03 424-292-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CMTN GRDN CA
2013-04-03 424-292-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CMTN GRDN CA
2013-04-03 424-296-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F CMTN CMTN CA
2013-04-01 424-296-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CMTN CMTN CA
2013-04-01 424-296-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CMTN CMTN CA
2013-03-19 424-280-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K SNMN SNMN CA
2013-03-19 424-289-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K SNMN MRVS CA
2013-03-19 424-293-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K W ANGELES CA
2013-03-15 424-292-5XXX 5000–5999Assigned IP HORIZON LLC 515J CMTN GRDN CA
2013-03-15 424-488-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TORRANCE CA
2013-03-15 424-731-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TORRANCE CA
2013-03-14 424-287-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K SAN PEDRO CA
2013-03-14 424-488-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K TORRANCE CA
2013-03-12 424-227-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K INGLEWOOD CA
2013-03-12 424-284-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K BEVERLYHLS CA
2013-03-12 424-284-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2013-03-12 424-284-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2013-03-12 424-290-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K EL SEGUNDO CA
2013-03-12 424-292-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K CMTN GRDN CA
2013-03-12 424-297-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K HAWTHORNE CA
2013-03-12 424-328-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K LOMITA CA
2013-03-01 424-217-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F EL SEGUNDO CA
2013-03-01 424-222-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LOMITA CA
2013-03-01 424-282-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F 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.