NumberResearchThousands-blocks in 775-505
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 775-505 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
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2015-10-15 | 775-505-0XXX | 0000–0999 | Assigned | SOUTHWEST TELEPHONE COMPANY - NV | 218G | PAHRUMP | NV |
| 2016-02-29 | 775-505-1XXX | 1000–1999 | Assigned | ONVOY, LLC - NV | 029F | PAHRUMP | NV |
| 2016-02-29 | 775-505-2XXX | 2000–2999 | Assigned | ONVOY, LLC - NV | 029F | PAHRUMP | NV |
| 2016-06-15 | 775-505-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - NV | 075F | PAHRUMP | NV |
| 2016-08-23 | 775-505-4XXX | 4000–4999 | Assigned | T-MOBILE USA, INC. | 6529 | PAHRUMP | NV |
| 2016-04-25 | 775-505-5XXX | 5000–5999 | Assigned | CSC VOICE, LLC | 612K | PAHRUMP | NV |
| 2017-03-29 | 775-505-6XXX | 6000–6999 | Assigned | TELNYX LLC | 073H | PAHRUMP | NV |
| 2016-07-07 | 775-505-7XXX | 7000–7999 | Assigned | T-MOBILE USA, INC. | 6529 | PAHRUMP | NV |
| 2016-07-07 | 775-505-8XXX | 8000–8999 | Assigned | T-MOBILE USA, INC. | 6529 | PAHRUMP | NV |
| 2016-07-07 | 775-505-9XXX | 9000–9999 | Assigned | T-MOBILE USA, INC. | 6529 | PAHRUMP | NV |
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.