NumberResearchThousands-blocks in 775-548
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 775-548 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 |
|---|---|---|---|---|---|---|---|
| — | 775-548-0XXX | 0000–0999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - NV | 4805 | CRYSTALBAY | NV |
| 2020-12-09 | 775-548-1XXX | 1000–1999 | Assigned | TELNYX LLC | 073H | CRYSTALBAY | NV |
| — | 775-548-2XXX | 2000–2999 | Available | CRYSTALBAY | NV | ||
| 2021-12-07 | 775-548-3XXX | 3000–3999 | Assigned | BANDWIDTH.COM CLEC, LLC - NV | 075F | CRYSTALBAY | NV |
| 2014-07-25 | 775-548-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NV | 4805 | CRYSTALBAY | NV |
| 2016-08-11 | 775-548-5XXX | 5000–5999 | Assigned | CHARTER IP ENABLED SERVICES, LLC | 792K | CRYSTALBAY | NV |
| 2015-07-02 | 775-548-6XXX | 6000–6999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC | 6010 | CRYSTALBAY | NV |
| 2021-02-05 | 775-548-7XXX | 7000–7999 | Assigned | ONVOY, LLC - NV | 029F | CRYSTALBAY | NV |
| — | 775-548-8XXX | 8000–8999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - NV | 4805 | CRYSTALBAY | NV |
| — | 775-548-9XXX | 9000–9999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - NV | 4805 | CRYSTALBAY | 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.