NumberResearchThousands-blocks in 839-766
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 839-766 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 839 blocks
Most active assignees, all time — NPA 839
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 839-766-0XXX | 0000–0999 | Available | GREATFALLS | SC | ||
| 2025-10-10 | 839-766-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | GREATFALLS | SC |
| — | 839-766-2XXX | 2000–2999 | Available | GREATFALLS | SC | ||
| 2021-03-18 | 839-766-3XXX | 3000–3999 | Assigned | FRACTEL, LLC | 965H | GREATFALLS | SC |
| 2024-04-15 | 839-766-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - SC | 5258 | GREATFALLS | SC |
| — | 839-766-5XXX | 5000–5999 | Available | GREATFALLS | SC | ||
| 2021-03-18 | 839-766-6XXX | 6000–6999 | Assigned | FRACTEL, LLC | 965H | GREATFALLS | SC |
| 2025-08-05 | 839-766-7XXX | 7000–7999 | Assigned | TERRA NOVA TELECOM INC. | 145J | GREATFALLS | SC |
| — | 839-766-8XXX | 8000–8999 | Available | GREATFALLS | SC | ||
| — | 839-766-9XXX | 9000–9999 | Available | GREATFALLS | SC |
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.