NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

2 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 562
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 1
BANDWIDTH.COM CLEC, LLC - CA 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
2019-11-14 562-399-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 DOWNEY CA
2019-11-14 562-399-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 DOWNEY CA
2019-11-14 562-576-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 PICORIVERA CA
2019-11-07 562-414-1XXX 1000–1999Assigned TELNYX LLC 073H DOWNEY CA
2019-11-04 562-640-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LA HABRA CA
2019-10-28 562-373-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PICORIVERA CA
2019-10-23 562-509-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ALAMITOS CA
2019-09-26 562-486-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LONG BEACH CA
2019-09-25 562-576-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 PICORIVERA CA
2019-09-25 562-608-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LAKEWOOD CA
2019-09-23 562-410-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NORWALK CA
2019-09-23 562-410-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NORWALK CA
2019-09-23 562-410-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NORWALK CA
2019-09-18 562-390-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 DOWNEY CA
2019-08-27 562-410-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 NORWALK CA
2019-08-22 562-775-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 CMTN CMTN CA
2019-08-13 562-307-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C NORWALK CA
2019-08-13 562-376-5XXX 5000–5999Assigned ONVOY, LLC - CA 649C NORWALK CA
2019-08-13 562-509-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D ALAMITOS CA
2019-08-13 562-509-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D ALAMITOS CA
2019-08-13 562-509-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D ALAMITOS CA
2019-08-13 562-582-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C CMTN CMTN CA
2019-08-13 562-582-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C CMTN CMTN CA
2019-08-05 562-504-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 WHITTIER CA
2019-07-30 562-509-6XXX 6000–6999Assigned T-MOBILE USA, INC. 6529 ALAMITOS CA
2019-07-25 562-486-3XXX 3000–3999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 LONG BEACH CA
2019-07-25 562-766-0XXX 0000–0999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LAKEWOOD CA
2019-07-25 562-766-1XXX 1000–1999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LAKEWOOD CA
2019-07-25 562-766-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LAKEWOOD CA
2019-07-16 562-509-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ALAMITOS CA
2019-07-16 562-509-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ALAMITOS CA
2019-07-15 562-503-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 NORWALK CA
2019-07-12 562-267-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 LA HABRA CA
2019-07-10 562-689-9XXX 9000–9999Assigned TELNYX LLC 073H LA HABRA CA
2019-07-09 562-501-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LA HABRA CA
2019-07-09 562-501-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LA HABRA CA
2019-07-09 562-503-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 NORWALK CA
2019-07-09 562-524-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LA HABRA CA
2019-07-09 562-524-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LA HABRA CA
2019-07-09 562-524-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LA HABRA CA
2019-07-09 562-524-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LA HABRA CA
2019-07-05 562-825-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D ALAMITOS CA
2019-07-05 562-825-2XXX 2000–2999Assigned METROPCS NETWORKS, LLC 899D ALAMITOS CA
2019-07-05 562-825-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D ALAMITOS CA
2019-07-02 562-271-1XXX 1000–1999Assigned TELNYX LLC 073H PICORIVERA CA
2019-06-19 562-333-7XXX 7000–7999Assigned FRACTEL, LLC 965H CMTN CMTN CA
2019-06-19 562-512-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 LONG BEACH CA
2019-06-19 562-788-8XXX 8000–8999Assigned FRACTEL, LLC 965H CMTN CMTN CA
2019-06-11 562-825-0XXX 0000–0999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F ALAMITOS CA
2019-05-31 562-512-1XXX 1000–1999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LONG BEACH 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.