NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

1 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 818
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
2006-11-16 818-923-6XXX 6000–6999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 SNFN GRHL CA
2006-11-15 818-428-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 NORTHRIDGE CA
2006-11-15 818-428-2XXX 2000–2999Assigned LEVEL 3 TELECOM OF CALIFORNIA, LP - CA 7718 NORTHRIDGE CA
2006-11-14 818-689-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2006-11-14 818-689-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2006-11-14 818-815-8XXX 8000–8999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2006-11-14 818-815-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2006-11-07 818-569-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2006-10-31 818-912-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 CANOGAPARK CA
2006-10-25 818-540-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 AGOURA CA
2006-10-17 818-351-8XXX 8000–8999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BRBN SNVY CA
2006-10-17 818-578-9XXX 9000–9999Assigned T-MOBILE USA, INC. 6529 RESEDA CA
2006-10-16 818-573-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNFN PACM CA
2006-10-13 818-302-7XXX 7000–7999Assigned ONVOY, LLC - CA 649C SNFN PACM CA
2006-10-10 818-351-5XXX 5000–5999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BRBN SNVY CA
2006-10-10 818-351-7XXX 7000–7999Assigned LEVEL 3 COMMUNICATIONS, LLC - CA 8826 BRBN SNVY CA
2006-10-09 818-350-4XXX 4000–4999Assigned ONVOY, LLC - CA 649C NORTHRIDGE CA
2006-10-09 818-572-9XXX 9000–9999Assigned PEERLESS NETWORK OF CALIFORNIA, LLC - CA 373F GLENDALE CA
2006-10-06 818-302-8XXX 8000–8999Assigned ONVOY, LLC - CA 649C SNFN PACM CA
2006-10-03 818-336-2XXX 2000–2999Assigned T-MOBILE USA, INC. 6529 SNFN SNFN CA
2006-10-03 818-336-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 SNFN SNFN CA
2006-10-03 818-669-4XXX 4000–4999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2006-10-03 818-669-5XXX 5000–5999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2006-09-27 818-287-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 NO HOLLYWD CA
2006-09-27 818-588-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2006-09-27 818-588-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 BRBN BRBN CA
2006-09-27 818-588-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D BRBN BRBN CA
2006-09-27 818-857-1XXX 1000–1999Assigned METROPCS NETWORKS, LLC 899D CANOGAPARK CA
2006-09-27 818-941-7XXX 7000–7999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2006-09-27 818-941-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2006-09-27 818-941-9XXX 9000–9999Assigned METROPCS NETWORKS, LLC 899D VAN NUYS CA
2006-09-21 818-308-3XXX 3000–3999Assigned ONVOY, LLC - CA 649C NO HOLLYWD CA
2006-09-17 818-336-8XXX 8000–8999Assigned T-MOBILE USA, INC. 6529 SNFN SNFN CA
2006-09-17 818-849-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 VAN NUYS CA
2006-09-14 818-302-6XXX 6000–6999Assigned TWC IP ENABLED SERVICES, LLC 793K SNFN PACM CA
2006-09-14 818-669-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BRBN BRBN CA
2006-09-14 818-669-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BRBN BRBN CA
2006-09-14 818-669-6XXX 6000–6999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 BRBN BRBN CA
2006-09-14 818-689-0XXX 0000–0999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2006-09-14 818-689-1XXX 1000–1999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2006-09-14 818-689-2XXX 2000–2999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2006-09-14 818-689-3XXX 3000–3999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2006-09-14 818-689-4XXX 4000–4999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2006-09-14 818-689-7XXX 7000–7999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2006-09-14 818-689-9XXX 9000–9999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 6006 VAN NUYS CA
2006-09-14 818-815-5XXX 5000–5999Assigned PACIFIC BELL 9740 VAN NUYS CA
2006-09-14 818-815-6XXX 6000–6999Assigned PACIFIC BELL 9740 VAN NUYS CA
2006-09-13 818-488-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 SNFN GRHL CA
2006-09-13 818-641-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BRBN BRBN CA
2006-09-13 818-641-6XXX 6000–6999Assigned NEW CINGULAR WIRELESS PCS, LLC 6010 BRBN BRBN 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.