NumberResearchThousands-blocks in 541-288
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 541-288 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
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2022-04-12 | 541-288-0XXX | 0000–0999 | Assigned | METROPCS, INC. | 5562 | THE DALLES | OR |
| 2008-10-30 | 541-288-1XXX | 1000–1999 | Assigned | BANDWIDTH.COM CLEC, LLC - OR | 076F | THE DALLES | OR |
| 2026-02-17 | 541-288-2XXX | 2000–2999 | Assigned | TERRA NOVA TELECOM INC. | 145J | THE DALLES | OR |
| 2009-03-27 | 541-288-3XXX | 3000–3999 | Assigned | T-MOBILE USA, INC. | 6529 | THE DALLES | OR |
| 2018-06-28 | 541-288-4XXX | 4000–4999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | THE DALLES | OR |
| 2025-02-18 | 541-288-5XXX | 5000–5999 | Assigned | UNITED STATES CELLULAR - OR | 6349 | THE DALLES | OR |
| — | 541-288-6XXX | 6000–6999 | Reserved | METROPCS, INC. | 5562 | THE DALLES | OR |
| 2025-06-18 | 541-288-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | THE DALLES | OR |
| 2013-11-06 | 541-288-8XXX | 8000–8999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR | 5820 | THE DALLES | OR |
| 2013-11-25 | 541-288-9XXX | 9000–9999 | Assigned | PEERLESS NETWORK OF OREGON, LLC - OR | 157F | THE DALLES | OR |
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.