NumberResearch Membership · Data 09/21/2026

Recent thousands-block assignments

12 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/21/2026

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
2012-07-31 424-276-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C W ANGELES CA
2012-07-30 424-278-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2012-07-30 424-278-6XXX 6000–6999Assigned PAETEC ITEL, LLC 829J BEVERLYHLS CA
2012-07-30 424-278-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J BEVERLYHLS CA
2012-07-30 424-278-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2012-07-30 424-279-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2012-07-30 424-279-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2012-07-30 424-283-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-07-30 424-283-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-07-30 424-283-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-07-30 424-283-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-07-30 424-283-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2012-07-30 424-286-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C CMTN GRDN CA
2012-07-30 424-286-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C CMTN GRDN CA
2012-07-30 424-286-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C CMTN GRDN CA
2012-07-30 424-286-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C CMTN GRDN CA
2012-07-30 424-286-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C CMTN GRDN CA
2012-07-30 424-336-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C HAWTHORNE CA
2012-07-30 424-336-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C HAWTHORNE CA
2012-07-30 424-336-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C HAWTHORNE CA
2012-07-30 424-336-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C HAWTHORNE CA
2012-07-30 424-336-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C HAWTHORNE CA
2012-07-19 424-273-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K W ANGELES CA
2012-07-19 424-278-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2012-07-16 424-286-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN GRDN CA
2012-07-09 424-273-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 W ANGELES CA
2012-07-03 424-227-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 INGLEWOOD CA
2012-06-25 424-266-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K CMTN GRDN CA
2012-06-25 424-279-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K BEVERLYHLS CA
2012-06-22 424-283-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BEVERLYHLS CA
2012-06-21 424-258-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K CULVERCITY CA
2012-06-20 424-238-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K SNMN SNMN CA
2012-06-20 424-277-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K EL SEGUNDO CA
2012-06-15 424-281-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2012-06-15 424-281-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2012-06-15 424-281-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2012-06-11 424-280-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 SNMN SNMN CA
2012-06-07 424-283-4XXX 4000–4999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BEVERLYHLS CA
2012-06-06 424-703-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN PEDRO CA
2012-06-06 424-703-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN PEDRO CA
2012-06-05 424-281-1XXX 1000–1999Assigned PAETEC ITEL, LLC 829J BEVERLYHLS CA
2012-06-01 424-280-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J SNMN SNMN CA
2012-06-01 424-999-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 TORRANCE CA
2012-05-30 424-277-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EL SEGUNDO CA
2012-05-30 424-738-2XXX 2000–2999Assigned UTILITY TELECOM GROUP, LLC - CA 9262 AVALON CA
2012-05-29 424-835-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K SNMN MRVS CA
2012-05-25 424-282-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C REDONDO CA
2012-05-23 424-281-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2012-05-23 424-738-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 AVALON CA
2012-05-22 424-212-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDONDO CA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.