NumberResearchThousands-blocks in 920-571
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 920-571 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
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-07-27 | 920-571-0XXX | 0000–0999 | Assigned | COMMIO, LLC | 939H | MANITOWOC | WI |
| 2021-10-14 | 920-571-1XXX | 1000–1999 | Assigned | T-MOBILE USA, INC. | 6529 | MANITOWOC | WI |
| 2026-08-04 | 920-571-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | MANITOWOC | WI |
| — | 920-571-3XXX | 3000–3999 | Available | MANITOWOC | WI | ||
| — | 920-571-4XXX | 4000–4999 | Available | MANITOWOC | WI | ||
| — | 920-571-5XXX | 5000–5999 | Available | MANITOWOC | WI | ||
| 2021-10-14 | 920-571-6XXX | 6000–6999 | Assigned | T-MOBILE USA, INC. | 6529 | MANITOWOC | WI |
| 2024-08-27 | 920-571-7XXX | 7000–7999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MANITOWOC | WI |
| 2022-04-25 | 920-571-8XXX | 8000–8999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC WI | 7216 | MANITOWOC | WI |
| 2021-10-05 | 920-571-9XXX | 9000–9999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | MANITOWOC | 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.