NumberResearchThousands-blocks in 541-569
This prefix’s ten 1,000-number blocks and who holds each — 10 on record · from the daily NANPA thousands-block report, 09/19/2026
The ten 1,000-number thousand-blocks inside prefix 541-569 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 541 blocks
Most active assignees, all time — NPA 541
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2018-12-31 | 541-569-0XXX | 0000–0999 | Assigned | ONVOY, LLC - OR | 750E | LOSTINE | OR |
| — | 541-569-1XXX | 1000–1999 | Available | LOSTINE | OR | ||
| — | 541-569-2XXX | 2000–2999 | Reserved | ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER | 4323 | LOSTINE | OR |
| 2012-11-16 | 541-569-3XXX | 3000–3999 | Assigned | ONVOY, LLC - OR | 750E | LOSTINE | OR |
| 2012-11-16 | 541-569-4XXX | 4000–4999 | Assigned | ONVOY, LLC - OR | 750E | LOSTINE | OR |
| 2019-08-26 | 541-569-5XXX | 5000–5999 | Assigned | ONVOY, LLC - OR | 750E | LOSTINE | OR |
| 2014-01-22 | 541-569-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | LOSTINE | OR |
| 2007-05-02 | 541-569-7XXX | 7000–7999 | Assigned | ONVOY, LLC - OR | 750E | LOSTINE | OR |
| 2012-02-24 | 541-569-8XXX | 8000–8999 | Assigned | ZIPLY FIBER, LLC | 0760 | LOSTINE | OR |
| 2025-01-10 | 541-569-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | LOSTINE | OR |
Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.