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
2013-08-08 424-329-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CMTN GRDN CA
2013-08-07 424-302-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BEVERLYHLS CA
2013-08-07 424-302-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BEVERLYHLS CA
2013-08-06 424-295-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CMTN GRDN CA
2013-08-06 424-295-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CMTN GRDN CA
2013-08-06 424-295-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 CMTN GRDN CA
2013-08-05 424-321-3XXX 3000–3999Assigned PAETEC ITEL, LLC 829J EL SEGUNDO CA
2013-08-01 424-296-2XXX 2000–2999Assigned IP HORIZON LLC 515J CMTN CMTN CA
2013-08-01 424-297-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D HAWTHORNE CA
2013-07-30 424-465-7XXX 7000–7999Assigned PAETEC ITEL, LLC 829J W ANGELES CA
2013-07-23 424-289-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K SNMN MRVS CA
2013-07-23 424-570-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K SAN PEDRO CA
2013-07-22 424-252-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K SNMN SNMN CA
2013-07-22 424-293-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K W ANGELES CA
2013-07-22 424-326-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K CULVERCITY CA
2013-07-22 424-331-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K INGLEWOOD CA
2013-07-17 424-285-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2013-07-17 424-331-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C INGLEWOOD CA
2013-07-10 424-296-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 CMTN CMTN CA
2013-07-02 424-332-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BEVERLYHLS CA
2013-07-02 424-332-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BEVERLYHLS CA
2013-06-26 424-293-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 W ANGELES CA
2013-06-26 424-327-2XXX 2000–2999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L REDONDO CA
2013-06-20 424-322-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNMN SNMN CA
2013-06-20 424-326-4XXX 4000–4999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CULVERCITY CA
2013-06-20 424-331-1XXX 1000–1999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 INGLEWOOD CA
2013-06-19 424-332-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BEVERLYHLS CA
2013-06-18 424-332-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BEVERLYHLS CA
2013-06-17 424-321-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 EL SEGUNDO CA
2013-06-14 424-322-8XXX 8000–8999Assigned TWC IP ENABLED SERVICES, LLC 793K SNMN SNMN CA
2013-06-14 424-326-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 CULVERCITY CA
2013-06-13 424-296-5XXX 5000–5999Assigned AT&T ENTERPRISES, LLC 516C CMTN CMTN CA
2013-06-13 424-302-0XXX 0000–0999Assigned TWC IP ENABLED SERVICES, LLC 793K BEVERLYHLS CA
2013-06-13 424-732-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 INGLEWOOD CA
2013-06-12 424-326-0XXX 0000–0999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 CULVERCITY CA
2013-06-11 424-227-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K INGLEWOOD CA
2013-06-11 424-293-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K W ANGELES CA
2013-06-11 424-297-3XXX 3000–3999Assigned TWC IP ENABLED SERVICES, LLC 793K HAWTHORNE CA
2013-06-10 424-289-9XXX 9000–9999Assigned TWC IP ENABLED SERVICES, LLC 793K SNMN MRVS CA
2013-06-05 424-332-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BEVERLYHLS CA
2013-06-05 424-332-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BEVERLYHLS CA
2013-06-04 424-282-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDONDO CA
2013-06-04 424-282-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDONDO CA
2013-06-04 424-282-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDONDO CA
2013-06-04 424-282-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDONDO CA
2013-06-04 424-282-6XXX 6000–6999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDONDO CA
2013-06-04 424-282-9XXX 9000–9999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E REDONDO CA
2013-05-31 424-322-2XXX 2000–2999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNMN SNMN CA
2013-05-31 424-322-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNMN SNMN CA
2013-05-28 424-290-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 EL SEGUNDO 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.