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
Clear Download CSV ↓
Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2011-08-22 424-281-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BEVERLYHLS CA
2011-08-22 424-400-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDONDO CA
2011-08-09 424-278-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2011-08-05 424-244-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CMTN GRDN CA
2011-08-05 424-251-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 LOMITA CA
2011-08-01 424-220-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E EL SEGUNDO CA
2011-08-01 424-266-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN GRDN CA
2011-07-28 424-278-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 BEVERLYHLS CA
2011-07-21 424-781-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MALIBU CA
2011-07-20 424-281-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2011-07-19 424-255-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HAWTHORNE CA
2011-07-19 424-279-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2011-07-18 424-244-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN GRDN CA
2011-07-18 424-266-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN GRDN CA
2011-07-18 424-278-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2011-07-18 424-278-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2011-07-15 424-277-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL SEGUNDO CA
2011-07-15 424-277-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL SEGUNDO CA
2011-07-13 424-276-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C W ANGELES CA
2011-06-29 424-276-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E W ANGELES CA
2011-06-29 424-276-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E W ANGELES CA
2011-06-27 424-246-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN GRDN CA
2011-06-27 424-246-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN GRDN CA
2011-06-27 424-253-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2011-06-27 424-269-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HAWTHORNE CA
2011-06-27 424-269-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HAWTHORNE CA
2011-06-27 424-274-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2011-06-22 424-529-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C CMTN CMTN CA
2011-06-16 424-266-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 CMTN GRDN CA
2011-06-16 424-269-3XXX 3000–3999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J HAWTHORNE CA
2011-06-09 424-274-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2011-06-08 424-529-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2011-06-08 424-529-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2011-06-08 424-529-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2011-06-07 424-274-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E BEVERLYHLS CA
2011-05-18 424-274-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D BEVERLYHLS CA
2011-05-18 424-274-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D BEVERLYHLS CA
2011-05-09 424-275-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDONDO CA
2011-05-09 424-543-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CULVERCITY CA
2011-05-06 424-271-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E TORRANCE CA
2011-05-04 424-835-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNMN MRVS CA
2011-05-04 424-835-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNMN MRVS CA
2011-04-28 424-529-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C CMTN CMTN CA
2011-04-28 424-529-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C CMTN CMTN CA
2011-04-27 424-251-7XXX 7000–7999Assigned PACIFIC BELL 9740 LOMITA CA
2011-04-25 424-235-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MALIBU CA
2011-04-25 424-235-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MALIBU CA
2011-04-25 424-781-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MALIBU CA
2011-04-25 424-781-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MALIBU CA
2011-04-21 424-207-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D INGLEWOOD 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.