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
2014-09-19 424-320-9XXX 9000–9999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 W ANGELES CA
2014-09-19 424-325-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 W ANGELES CA
2014-09-19 424-344-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CMTN GRDN CA
2014-09-19 424-361-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 CULVERCITY CA
2014-09-19 424-361-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CULVERCITY CA
2014-09-19 424-363-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2014-09-19 424-363-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2014-09-19 424-363-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2014-09-19 424-363-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2014-09-19 424-363-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2014-09-19 424-364-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C SAN PEDRO CA
2014-09-19 424-364-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C SAN PEDRO CA
2014-09-19 424-367-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL SEGUNDO CA
2014-09-19 424-367-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL SEGUNDO CA
2014-09-18 424-346-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 MALIBU CA
2014-09-17 424-351-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 INGLEWOOD CA
2014-09-16 424-363-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2014-09-16 424-363-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2014-09-15 424-353-8XXX 8000–8999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J SNMN MRVS CA
2014-09-15 424-364-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SAN PEDRO CA
2014-09-15 424-364-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 SAN PEDRO CA
2014-09-15 424-364-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 SAN PEDRO CA
2014-09-15 424-364-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SAN PEDRO CA
2014-09-15 424-364-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SAN PEDRO CA
2014-09-15 424-364-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D SAN PEDRO CA
2014-09-11 424-361-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C CULVERCITY CA
2014-09-10 424-344-7XXX 7000–7999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CMTN GRDN CA
2014-09-10 424-363-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 BEVERLYHLS CA
2014-09-09 424-610-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNMN SNMN CA
2014-09-05 424-365-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 W ANGELES CA
2014-09-05 424-610-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SNMN SNMN CA
2014-09-05 424-610-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C SNMN SNMN CA
2014-09-04 424-334-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C AVALON CA
2014-09-04 424-334-6XXX 6000–6999Assigned ONVOY, LLC - CA 649C AVALON CA
2014-09-04 424-345-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C CULVERCITY CA
2014-09-03 424-365-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C W ANGELES CA
2014-09-03 424-365-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C W ANGELES CA
2014-09-02 424-338-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C CMTN CMTN CA
2014-09-02 424-344-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CMTN GRDN CA
2014-09-02 424-344-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CMTN GRDN CA
2014-09-02 424-352-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C REDONDO CA
2014-09-02 424-352-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C REDONDO CA
2014-08-29 424-345-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CULVERCITY CA
2014-08-29 424-345-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CULVERCITY CA
2014-08-29 424-352-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDONDO CA
2014-08-29 424-356-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 INGLEWOOD CA
2014-08-29 424-362-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2014-08-29 424-362-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2014-08-29 424-362-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2014-08-29 424-704-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CMTN CMTN 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.