NumberResearch Membership · Data 09/20/2026

Thousands-blocks in 818-466

This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

The ten 1,000-number thousand-blocks inside prefix 818-466 and who was initially assigned each. Under pooling these blocks often belong to different carriers — the single prefix-level “assignee” is usually just the pool / code holder, not who holds the numbers. ← all 818 blocks

Most active assignees, all time — NPA 818
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 4
T-MOBILE USA, INC. 3
TELEPORT COMMUNICATIONS AMERICA, LLC - CA 1
METROPCS NETWORKS, LLC 1
CHARTER IP ENABLED SERVICES, 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
2024-03-06 818-466-0XXX 0000–0999Assigned T-MOBILE USA, INC. 6529 CANOGAPARK CA
2024-03-06 818-466-1XXX 1000–1999Assigned T-MOBILE USA, INC. 6529 CANOGAPARK CA
— 818-466-2XXX 2000–2999Reserved U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CANOGAPARK CA
2024-03-06 818-466-3XXX 3000–3999Assigned T-MOBILE USA, INC. 6529 CANOGAPARK CA
2011-02-17 818-466-4XXX 4000–4999Assigned METROPCS NETWORKS, LLC 899D CANOGAPARK CA
2005-11-30 818-466-5XXX 5000–5999Assigned U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CANOGAPARK CA
— 818-466-6XXX 6000–6999Reserved U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CANOGAPARK CA
— 818-466-7XXX 7000–7999Reserved U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 671J CANOGAPARK CA
2005-08-31 818-466-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA, LLC - CA 7139 CANOGAPARK CA
2012-07-20 818-466-9XXX 9000–9999Assigned CHARTER IP ENABLED SERVICES, LLC 792K CANOGAPARK 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.