NumberResearchThousands-blocks in 920-853
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
The ten 1,000-number thousand-blocks inside prefix 920-853 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 920 blocks
Most active assignees, all time — NPA 920
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 920-853-0XXX | 0000–0999 | Available | HILBERT | WI | ||
| 2008-11-14 | 920-853-1XXX | 1000–1999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | HILBERT | WI |
| 2023-06-09 | 920-853-2XXX | 2000–2999 | Assigned | ONVOY, LLC - WI | 225C | HILBERT | WI |
| — | 920-853-3XXX | 3000–3999 | Reserved | FRONTIER NORTH INC. - WI | 0886 | HILBERT | WI |
| 2004-06-22 | 920-853-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | HILBERT | WI |
| 2026-05-12 | 920-853-5XXX | 5000–5999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HILBERT | WI |
| 2008-10-23 | 920-853-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - WI | 007F | HILBERT | WI |
| — | 920-853-7XXX | 7000–7999 | Reserved | FRONTIER NORTH INC. - WI | 0886 | HILBERT | WI |
| 2024-02-20 | 920-853-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | HILBERT | WI |
| 2025-07-24 | 920-853-9XXX | 9000–9999 | Assigned | TERRA NOVA TELECOM INC. | 145J | HILBERT | WI |
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.