NumberResearchThousands-blocks in 567-621
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 567-621 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
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 567-621-0XXX | 0000–0999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | FTRECOVERY | OH |
| 2008-12-03 | 567-621-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - OH | 001F | FTRECOVERY | OH |
| — | 567-621-2XXX | 2000–2999 | Available | FTRECOVERY | OH | ||
| — | 567-621-3XXX | 3000–3999 | Available | FTRECOVERY | OH | ||
| — | 567-621-4XXX | 4000–4999 | Available | FTRECOVERY | OH | ||
| — | 567-621-5XXX | 5000–5999 | Available | FTRECOVERY | OH | ||
| — | 567-621-6XXX | 6000–6999 | Available | FTRECOVERY | OH | ||
| 2014-03-18 | 567-621-7XXX | 7000–7999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | FTRECOVERY | OH |
| 2019-09-09 | 567-621-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | FTRECOVERY | OH |
| 2013-12-05 | 567-621-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF OHIO, LLC - OH | 284F | FTRECOVERY | 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.