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
2014-05-07 424-327-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 REDONDO CA
2014-05-07 424-343-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BEVERLYHLS CA
2014-05-07 424-343-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BEVERLYHLS CA
2014-05-02 424-325-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K W ANGELES CA
2014-05-02 424-348-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 HAWTHORNE CA
2014-05-02 424-365-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C W ANGELES CA
2014-04-28 424-302-5XXX 5000–5999Assigned IP HORIZON LLC 515J BEVERLYHLS CA
2014-04-28 424-343-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2014-04-28 424-343-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2014-04-28 424-353-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K SNMN MRVS CA
2014-04-25 424-346-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 MALIBU CA
2014-04-24 424-290-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EL SEGUNDO CA
2014-04-24 424-337-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 TORRANCE CA
2014-04-24 424-342-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN PEDRO CA
2014-04-23 424-299-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNMN SNMN CA
2014-04-21 424-346-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E MALIBU CA
2014-04-18 424-297-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 HAWTHORNE CA
2014-04-18 424-343-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2014-04-18 424-343-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2014-04-14 424-296-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2014-04-14 424-296-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2014-04-14 424-338-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2014-04-14 424-338-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E CMTN CMTN CA
2014-04-11 424-347-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC 7229 LOMITA CA
2014-04-10 424-329-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CMTN GRDN CA
2014-04-10 424-337-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TORRANCE CA
2014-04-07 424-329-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K CMTN GRDN CA
2014-04-04 424-345-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CULVERCITY CA
2014-04-04 424-345-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CULVERCITY CA
2014-04-03 424-322-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNMN SNMN CA
2014-04-03 424-338-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CMTN CMTN CA
2014-04-02 424-299-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNMN SNMN CA
2014-04-01 424-236-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HAWTHORNE CA
2014-04-01 424-320-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 W ANGELES CA
2014-03-31 424-327-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDONDO CA
2014-03-31 424-329-3XXX 3000–3999Assigned AT&T ENTERPRISES, LLC 516C CMTN GRDN CA
2014-03-31 424-342-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K SAN PEDRO CA
2014-03-31 424-343-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K BEVERLYHLS CA
2014-03-19 424-320-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 W ANGELES CA
2014-03-19 424-327-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J REDONDO CA
2014-03-17 424-291-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNMN SNMN CA
2014-03-17 424-341-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CULVERCITY CA
2014-03-14 424-324-6XXX 6000–6999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BEVERLYHLS CA
2014-03-14 424-343-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2014-03-13 424-337-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J TORRANCE CA
2014-03-13 424-341-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CULVERCITY CA
2014-03-13 424-341-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CULVERCITY CA
2014-03-07 424-324-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2014-03-06 424-338-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K CMTN CMTN CA
2014-03-05 424-289-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNMN MRVS 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.