NumberResearchThousands-blocks in 478-286
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 478-286 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 478 blocks
Most active assignees, all time — NPA 478
New assignments by month
Sep 2026
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 478-286-0XXX | 0000–0999 | Reserved | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA | 6540 | BYROMVILLE | GA |
| — | 478-286-1XXX | 1000–1999 | Reserved | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA | 6540 | BYROMVILLE | GA |
| 2020-02-10 | 478-286-2XXX | 2000–2999 | Assigned | ONVOY, LLC - GA | 067D | BYROMVILLE | GA |
| 2020-02-10 | 478-286-3XXX | 3000–3999 | Assigned | ONVOY, LLC - GA | 067D | BYROMVILLE | GA |
| 2020-09-11 | 478-286-4XXX | 4000–4999 | Assigned | ONVOY, LLC - GA | 067D | BYROMVILLE | GA |
| 2020-09-11 | 478-286-5XXX | 5000–5999 | Assigned | ONVOY, LLC - GA | 067D | BYROMVILLE | GA |
| — | 478-286-6XXX | 6000–6999 | Available | BYROMVILLE | GA | ||
| 2021-12-14 | 478-286-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | BYROMVILLE | GA |
| 2020-05-20 | 478-286-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | BYROMVILLE | GA |
| 2024-09-23 | 478-286-9XXX | 9000–9999 | Assigned | ONVOY SPECTRUM, LLC | 624H | BYROMVILLE | GA |
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.