NumberResearchThousands-blocks in 567-523
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 567-523 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 567 blocks
Most active assignees, all time — NPA 567
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 567-523-0XXX | 0000–0999 | Available | NORTH STAR | OH | ||
| — | 567-523-1XXX | 1000–1999 | Available | NORTH STAR | OH | ||
| — | 567-523-2XXX | 2000–2999 | Available | NORTH STAR | OH | ||
| 2011-01-31 | 567-523-3XXX | 3000–3999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | NORTH STAR | OH |
| 2005-01-27 | 567-523-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | NORTH STAR | OH |
| — | 567-523-5XXX | 5000–5999 | Available | NORTH STAR | OH | ||
| 2025-01-30 | 567-523-6XXX | 6000–6999 | Assigned | PEERLESS NETWORK OF OHIO, LLC - OH | 284F | NORTH STAR | OH |
| 2013-12-09 | 567-523-7XXX | 7000–7999 | Assigned | PEERLESS NETWORK OF OHIO, LLC - OH | 284F | NORTH STAR | OH |
| 2019-09-10 | 567-523-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | NORTH STAR | OH |
| 2008-12-04 | 567-523-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - OH | 001F | NORTH STAR | OH |
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.