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
2014-07-10 424-324-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2014-07-10 424-335-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BEVERLYHLS CA
2014-07-08 424-356-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 INGLEWOOD CA
2014-07-03 424-324-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2014-07-03 424-324-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2014-07-03 424-343-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F BEVERLYHLS CA
2014-07-03 424-345-9XXX 9000–9999Assigned PAETEC ITEL, LLC 829J CULVERCITY CA
2014-07-03 424-353-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNMN MRVS CA
2014-06-30 424-291-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN SNMN CA
2014-06-30 424-365-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J W ANGELES CA
2014-06-26 424-324-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2014-06-26 424-324-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2014-06-26 424-325-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 W ANGELES CA
2014-06-26 424-325-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 W ANGELES CA
2014-06-26 424-352-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 REDONDO CA
2014-06-24 424-610-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 SNMN SNMN CA
2014-06-20 424-488-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TORRANCE CA
2014-06-19 424-338-6XXX 6000–6999Assigned AT&T ENTERPRISES, LLC 516C CMTN CMTN CA
2014-06-18 424-334-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E AVALON CA
2014-06-18 424-334-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E AVALON CA
2014-06-18 424-342-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SAN PEDRO CA
2014-06-18 424-347-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J LOMITA CA
2014-06-18 424-348-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HAWTHORNE CA
2014-06-18 424-348-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HAWTHORNE CA
2014-06-18 424-348-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E HAWTHORNE CA
2014-06-13 424-625-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNMN MRVS CA
2014-06-12 424-348-8XXX 8000–8999Assigned AT&T ENTERPRISES, LLC 516C HAWTHORNE CA
2014-06-10 424-321-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J EL SEGUNDO CA
2014-06-10 424-322-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN SNMN CA
2014-06-10 424-322-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E SNMN SNMN CA
2014-06-09 424-299-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNMN SNMN CA
2014-06-09 424-299-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNMN SNMN CA
2014-06-09 424-331-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INGLEWOOD CA
2014-06-09 424-331-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INGLEWOOD CA
2014-06-05 424-345-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CULVERCITY CA
2014-06-05 424-345-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CULVERCITY CA
2014-06-05 424-345-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CULVERCITY CA
2014-06-04 424-352-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDONDO CA
2014-05-30 424-334-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J AVALON CA
2014-05-30 424-346-7XXX 7000–7999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J MALIBU CA
2014-05-23 424-329-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CMTN GRDN CA
2014-05-22 424-343-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 BEVERLYHLS CA
2014-05-22 424-352-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDONDO CA
2014-05-22 424-352-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDONDO CA
2014-05-19 424-247-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDONDO CA
2014-05-19 424-327-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDONDO CA
2014-05-19 424-327-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDONDO CA
2014-05-19 424-327-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDONDO CA
2014-05-15 424-327-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDONDO CA
2014-05-15 424-345-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CULVERCITY 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.