NumberResearchThousands-blocks in 541-628
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 541-628 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 |
|---|---|---|---|---|---|---|---|
| — | 541-628-0XXX | 0000–0999 | Available | JOHN DAY | OR | ||
| 2024-07-25 | 541-628-1XXX | 1000–1999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | JOHN DAY | OR |
| — | 541-628-2XXX | 2000–2999 | Available | JOHN DAY | OR | ||
| 2025-03-21 | 541-628-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | JOHN DAY | OR |
| — | 541-628-4XXX | 4000–4999 | Available | JOHN DAY | OR | ||
| 2023-01-27 | 541-628-5XXX | 5000–5999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - OR | 3234 | JOHN DAY | OR |
| 2013-10-25 | 541-628-6XXX | 6000–6999 | Assigned | CENTURYLINK COMMUNICATIONS, LLC | 508J | JOHN DAY | OR |
| 2008-09-04 | 541-628-7XXX | 7000–7999 | Assigned | ONVOY, LLC - OR | 750E | JOHN DAY | OR |
| 2025-04-07 | 541-628-8XXX | 8000–8999 | Assigned | METROPCS, INC. | 5562 | JOHN DAY | OR |
| 2025-11-12 | 541-628-9XXX | 9000–9999 | Assigned | BANDWIDTH.COM CLEC, LLC - OR | 076F | JOHN DAY | 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.