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
2017-10-03 424-410-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNMN MRVS CA
2017-10-03 424-410-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNMN MRVS CA
2017-09-29 424-323-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TORRANCE CA
2017-09-28 424-401-1XXX 1000–1999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L LOMITA CA
2017-09-26 424-267-6XXX 6000–6999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L SAN PEDRO CA
2017-09-26 424-404-7XXX 7000–7999Assigned COMCAST PHONE OF CALIFORNIA, LLC 394L REDONDO CA
2017-09-25 424-267-5XXX 5000–5999Assigned TWC IP ENABLED SERVICES, LLC 793K SAN PEDRO CA
2017-09-25 424-310-3XXX 3000–3999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 HAWTHORNE CA
2017-09-22 424-395-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 MALIBU CA
2017-09-15 424-397-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 EL SEGUNDO CA
2017-09-13 424-433-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D SNMN SNMN CA
2017-09-12 424-323-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D TORRANCE CA
2017-08-23 424-552-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C SAN PEDRO CA
2017-08-23 424-552-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C SAN PEDRO CA
2017-08-23 424-552-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C SAN PEDRO CA
2017-08-23 424-552-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C SAN PEDRO CA
2017-08-17 424-215-0XXX 0000–0999Assigned INTEGRATED PATH COMMUNICATIONS, LLC - CA 707H SAN PEDRO CA
2017-08-17 424-404-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D REDONDO CA
2017-08-17 424-526-9XXX 9000–9999Assigned INTEGRATED PATH COMMUNICATIONS, LLC - CA 707H SNMN MRVS CA
2017-08-17 424-538-0XXX 0000–0999Assigned INTEGRATED PATH COMMUNICATIONS, LLC - CA 707H SNMN SNMN CA
2017-08-16 424-388-7XXX 7000–7999Assigned INTEGRATED PATH COMMUNICATIONS, LLC - CA 707H MALIBU CA
2017-08-15 424-421-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C BEVERLYHLS CA
2017-08-14 424-404-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 REDONDO CA
2017-08-14 424-552-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 SAN PEDRO CA
2017-08-09 424-403-4XXX 4000–4999Assigned TWC IP ENABLED SERVICES, LLC 793K CMTN CMTN CA
2017-08-09 424-528-2XXX 2000–2999Assigned TWC IP ENABLED SERVICES, LLC 793K CMTN GRDN CA
2017-08-07 424-310-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D HAWTHORNE CA
2017-07-27 424-414-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D INGLEWOOD CA
2017-07-26 424-319-5XXX 5000–5999Assigned METROPCS NETWORKS, LLC 899D CMTN GRDN CA
2017-07-26 424-443-2XXX 2000–2999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 SNMN MRVS CA
2017-07-26 424-552-8XXX 8000–8999Assigned METROPCS NETWORKS, LLC 899D SAN PEDRO CA
2017-07-26 424-552-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D SAN PEDRO CA
2017-07-17 424-414-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 INGLEWOOD CA
2017-07-03 424-360-9XXX 9000–9999Assigned ONVOY, LLC - CA 649C TORRANCE CA
2017-06-30 424-404-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F REDONDO CA
2017-06-28 424-537-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D SNMN MRVS CA
2017-06-15 424-390-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F REDONDO CA
2017-06-15 424-522-0XXX 0000–0999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 BEVERLYHLS CA
2017-06-12 424-299-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 SNMN SNMN CA
2017-06-12 424-318-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TORRANCE CA
2017-06-12 424-399-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TORRANCE CA
2017-06-12 424-399-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 TORRANCE CA
2017-06-08 424-399-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D TORRANCE CA
2017-05-22 424-267-2XXX 2000–2999Assigned TELNYX LLC 073H SAN PEDRO CA
2017-05-22 424-307-8XXX 8000–8999Assigned TELNYX LLC 073H HAWTHORNE CA
2017-05-22 424-318-3XXX 3000–3999Assigned TELNYX LLC 073H TORRANCE CA
2017-05-22 424-388-5XXX 5000–5999Assigned TELNYX LLC 073H MALIBU CA
2017-05-22 424-423-6XXX 6000–6999Assigned TELNYX LLC 073H EL SEGUNDO CA
2017-05-22 424-452-9XXX 9000–9999Assigned TELNYX LLC 073H REDONDO CA
2017-05-22 424-501-3XXX 3000–3999Assigned TELNYX LLC 073H 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.