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
2019-02-06 562-732-1XXX 1000–1999Assigned ONVOY, LLC - CA 649C LAKEWOOD CA
2019-02-06 562-732-2XXX 2000–2999Assigned ONVOY, LLC - CA 649C LAKEWOOD CA
2019-02-04 562-689-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LA HABRA CA
2019-02-04 562-689-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LA HABRA CA
2019-02-04 562-689-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - CA 981E LA HABRA CA
2019-01-31 562-378-5XXX 5000–5999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F WHITTIER CA
2019-01-31 562-689-8XXX 8000–8999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F LA HABRA CA
2019-01-29 562-832-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 PICORIVERA CA
2019-01-25 562-551-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PICORIVERA CA
2019-01-14 562-725-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ALAMITOS CA
2019-01-11 562-399-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D DOWNEY CA
2019-01-11 562-486-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 LONG BEACH CA
2019-01-11 562-486-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LONG BEACH CA
2019-01-11 562-486-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LONG BEACH CA
2019-01-11 562-503-3XXX 3000–3999Assigned METROPCS NETWORKS, LLC 899D NORWALK CA
2019-01-11 562-725-0XXX 0000–0999Assigned METROPCS NETWORKS, LLC 899D ALAMITOS CA
2019-01-07 562-739-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 LAKEWOOD CA
2018-12-17 562-399-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 DOWNEY CA
2018-12-04 562-275-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LAKEWOOD CA
2018-12-03 562-725-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 ALAMITOS CA
2018-11-27 562-543-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 CMTN CMTN CA
2018-11-26 562-503-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 NORWALK CA
2018-11-26 562-503-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 NORWALK CA
2018-11-01 562-501-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LA HABRA CA
2018-10-18 562-399-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DOWNEY CA
2018-10-11 562-330-6XXX 6000–6999Assigned METROPCS NETWORKS, LLC 899D ALAMITOS CA
2018-10-11 562-380-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D LONG BEACH CA
2018-10-11 562-503-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D NORWALK CA
2018-10-11 562-551-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 PICORIVERA CA
2018-10-04 562-380-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 LONG BEACH CA
2018-10-04 562-380-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 LONG BEACH CA
2018-09-28 562-399-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F DOWNEY CA
2018-09-24 562-725-7XXX 7000–7999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F ALAMITOS CA
2018-09-24 562-832-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F PICORIVERA CA
2018-09-18 562-503-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 NORWALK CA
2018-09-13 562-390-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D DOWNEY CA
2018-09-10 562-249-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 LAKEWOOD CA
2018-09-05 562-390-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D DOWNEY CA
2018-09-05 562-390-5XXX 5000–5999Assigned METROPCS NETWORKS, LLC 899D DOWNEY CA
2018-09-05 562-390-7XXX 7000–7999Assigned METROPCS NETWORKS, LLC 899D DOWNEY CA
2018-08-28 562-702-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 ALAMITOS CA
2018-08-28 562-702-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D ALAMITOS CA
2018-08-28 562-702-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 ALAMITOS CA
2018-08-28 562-702-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 ALAMITOS CA
2018-08-23 562-390-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 DOWNEY CA
2018-08-23 562-486-2XXX 2000–2999Assigned MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 7240 LONG BEACH CA
2018-08-23 562-679-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 LAKEWOOD CA
2018-08-08 562-390-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 DOWNEY CA
2018-08-06 562-390-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 DOWNEY CA
2018-07-19 562-379-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 NORWALK 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.