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
2008-03-14 424-227-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C INGLEWOOD CA
2008-03-14 424-234-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C MALIBU CA
2008-03-14 424-238-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SNMN SNMN CA
2008-03-14 424-704-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C CMTN CMTN CA
2008-03-13 424-704-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CMTN CMTN CA
2008-03-12 424-239-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2008-03-12 424-239-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2008-02-22 424-240-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D HAWTHORNE CA
2008-02-22 424-240-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D HAWTHORNE CA
2008-02-15 424-204-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K BEVERLYHLS CA
2008-02-14 424-200-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D HAWTHORNE CA
2008-02-14 424-236-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D HAWTHORNE CA
2008-02-11 424-744-5XXX 5000–5999Assigned PAETEC ITEL, LLC 829J SNMN SNMN CA
2008-02-08 424-218-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J EL SEGUNDO CA
2008-02-08 424-218-4XXX 4000–4999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J EL SEGUNDO CA
2008-02-08 424-653-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BEVERLYHLS CA
2008-02-01 424-238-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNMN SNMN CA
2008-01-25 424-218-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL SEGUNDO CA
2008-01-23 424-757-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TORRANCE CA
2008-01-21 424-233-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CMTN GRDN CA
2008-01-21 424-236-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 HAWTHORNE CA
2008-01-21 424-238-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNMN SNMN CA
2008-01-21 424-238-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNMN SNMN CA
2008-01-17 424-270-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 W ANGELES CA
2008-01-08 424-206-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 REDONDO CA
2008-01-08 424-785-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K CMTN CMTN CA
2008-01-08 424-785-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K CMTN CMTN CA
2007-12-26 424-206-1XXX 1000–1999Assigned TWC IP ENABLED SERVICES, LLC 793K REDONDO CA
2007-12-26 424-247-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K REDONDO CA
2007-12-21 424-224-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SAN PEDRO CA
2007-12-21 424-230-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2007-12-20 424-744-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNMN SNMN CA
2007-12-20 424-750-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INGLEWOOD CA
2007-12-14 424-832-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K W ANGELES CA
2007-12-14 424-832-7XXX 7000–7999Assigned TWC IP ENABLED SERVICES, LLC 793K W ANGELES CA
2007-12-13 424-233-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 CMTN GRDN CA
2007-12-13 424-634-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDONDO CA
2007-12-07 424-210-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SAN PEDRO CA
2007-12-07 424-264-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 SAN PEDRO CA
2007-12-07 424-264-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SAN PEDRO CA
2007-12-03 424-217-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 EL SEGUNDO CA
2007-11-21 424-201-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 TORRANCE CA
2007-11-21 424-206-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L REDONDO CA
2007-11-21 424-704-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CMTN CMTN CA
2007-11-08 424-238-9XXX 9000–9999Assigned FRONTIER CALIFORNIA INC. 2319 SNMN SNMN CA
2007-11-07 424-203-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LOMITA CA
2007-11-07 424-288-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BEVERLYHLS CA
2007-11-02 424-230-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 BEVERLYHLS CA
2007-10-31 424-205-6XXX 6000–6999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 CMTN GRDN CA
2007-10-26 424-644-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MALIBU 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.