NumberResearchThousands-blocks in 775-266
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 775-266 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 775 blocks
Most active assignees, all time — NPA 775
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 775-266-0XXX | 0000–0999 | Available | TOPAZ LAKE | NV | ||
| — | 775-266-1XXX | 1000–1999 | Reserved | FRONTIER COMMUNICATIONS OF THE SOUTHWEST INC. - NV | 4421 | TOPAZ LAKE | NV |
| 2010-03-10 | 775-266-2XXX | 2000–2999 | Assigned | UTILITY TELECOM GROUP, LLC - NV | 811D | TOPAZ LAKE | NV |
| — | 775-266-3XXX | 3000–3999 | Reserved | FRONTIER COMMUNICATIONS OF THE SOUTHWEST INC. - NV | 4421 | TOPAZ LAKE | NV |
| — | 775-266-4XXX | 4000–4999 | Reserved | FRONTIER COMMUNICATIONS OF THE SOUTHWEST INC. - NV | 4421 | TOPAZ LAKE | NV |
| 2022-03-14 | 775-266-5XXX | 5000–5999 | Assigned | TON80 COMMUNICATIONS, LLC | 516J | TOPAZ LAKE | NV |
| 2020-07-27 | 775-266-6XXX | 6000–6999 | Assigned | FRACTEL, LLC | 965H | TOPAZ LAKE | NV |
| — | 775-266-7XXX | 7000–7999 | Available | TOPAZ LAKE | NV | ||
| 2008-11-03 | 775-266-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NV | 075F | TOPAZ LAKE | NV |
| — | 775-266-9XXX | 9000–9999 | Reserved | FRONTIER COMMUNICATIONS OF THE SOUTHWEST INC. - NV | 4421 | TOPAZ LAKE | NV |
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.