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
2014-08-28 424-348-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 HAWTHORNE CA
2014-08-26 424-356-0XXX 0000–0999Assigned ONVOY, LLC - CA 649C INGLEWOOD CA
2014-08-26 424-356-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C INGLEWOOD CA
2014-08-26 424-362-2XXX 2000–2999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J BEVERLYHLS CA
2014-08-25 424-353-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C SNMN MRVS CA
2014-08-22 424-348-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C HAWTHORNE CA
2014-08-21 424-347-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C LOMITA CA
2014-08-21 424-358-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 TORRANCE CA
2014-08-21 424-362-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2014-08-21 424-362-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2014-08-21 424-362-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2014-08-21 424-362-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2014-08-21 424-362-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2014-08-21 424-362-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2014-08-12 424-342-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAN PEDRO CA
2014-08-12 424-346-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 MALIBU CA
2014-08-12 424-347-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LOMITA CA
2014-08-08 424-357-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 BEVERLYHLS CA
2014-08-08 424-357-1XXX 1000–1999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 BEVERLYHLS CA
2014-08-08 424-357-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 BEVERLYHLS CA
2014-08-08 424-357-3XXX 3000–3999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 BEVERLYHLS CA
2014-08-08 424-357-4XXX 4000–4999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 BEVERLYHLS CA
2014-08-08 424-357-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 BEVERLYHLS CA
2014-08-08 424-357-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 BEVERLYHLS CA
2014-08-08 424-357-7XXX 7000–7999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 BEVERLYHLS CA
2014-08-08 424-357-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 BEVERLYHLS CA
2014-08-08 424-357-9XXX 9000–9999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 BEVERLYHLS CA
2014-08-07 424-321-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 EL SEGUNDO CA
2014-08-07 424-356-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 INGLEWOOD CA
2014-08-06 424-352-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDONDO CA
2014-08-01 424-295-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CMTN GRDN CA
2014-08-01 424-295-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CMTN GRDN CA
2014-08-01 424-329-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CMTN GRDN CA
2014-08-01 424-342-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN PEDRO CA
2014-08-01 424-342-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN PEDRO CA
2014-07-31 424-296-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 CMTN CMTN CA
2014-07-31 424-356-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 INGLEWOOD CA
2014-07-30 424-302-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2014-07-30 424-324-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2014-07-30 424-324-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2014-07-30 424-324-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BEVERLYHLS CA
2014-07-30 424-342-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SAN PEDRO CA
2014-07-30 424-353-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SNMN MRVS CA
2014-07-30 424-465-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 W ANGELES CA
2014-07-23 424-321-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL SEGUNDO CA
2014-07-23 424-365-5XXX 5000–5999Assigned HD CARRIER LLC 321J W ANGELES CA
2014-07-22 424-347-7XXX 7000–7999Assigned AT&T ENTERPRISES, LLC 516C LOMITA CA
2014-07-16 424-342-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 SAN PEDRO CA
2014-07-15 424-351-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 INGLEWOOD CA
2014-07-15 424-365-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J W ANGELES 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.