NumberResearchThousands-blocks in 608-506
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 608-506 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 608 blocks
Most active assignees, all time — NPA 608
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
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2021-07-02 | 608-506-0XXX | 0000–0999 | Assigned | ONVOY, LLC - WI | 225C | WONEWOC | WI |
| 2022-01-14 | 608-506-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - WI | 007F | WONEWOC | WI |
| 2022-03-07 | 608-506-2XXX | 2000–2999 | Assigned | TECH COM, INC. - WI | 2556 | WONEWOC | WI |
| 2025-01-13 | 608-506-3XXX | 3000–3999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | WONEWOC | WI |
| — | 608-506-4XXX | 4000–4999 | Available | WONEWOC | WI | ||
| — | 608-506-5XXX | 5000–5999 | Available | WONEWOC | WI | ||
| 2025-07-31 | 608-506-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | WONEWOC | WI |
| 2023-02-08 | 608-506-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - WI | 5489 | WONEWOC | WI |
| 2024-02-28 | 608-506-8XXX | 8000–8999 | Assigned | ONVOY SPECTRUM, LLC | 624H | WONEWOC | WI |
| — | 608-506-9XXX | 9000–9999 | Available | WONEWOC | 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.