NumberResearchThousands-blocks in 585-668
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 585-668 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 585 blocks
Most active assignees, all time — NPA 585
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
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Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-07-05 | 585-668-0XXX | 0000–0999 | Assigned | ONVOY, LLC- NY | 384C | FAIRPORT | NY |
| 2023-03-23 | 585-668-1XXX | 1000–1999 | Assigned | NUSO, LLC | 732J | FAIRPORT | NY |
| 2024-11-22 | 585-668-2XXX | 2000–2999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | FAIRPORT | NY |
| — | 585-668-3XXX | 3000–3999 | Available | FAIRPORT | NY | ||
| — | 585-668-4XXX | 4000–4999 | Available | FAIRPORT | NY | ||
| — | 585-668-5XXX | 5000–5999 | Available | FAIRPORT | NY | ||
| 2023-11-22 | 585-668-6XXX | 6000–6999 | Assigned | PEERING HUB, INC. - NY | 818H | FAIRPORT | NY |
| — | 585-668-7XXX | 7000–7999 | Available | FAIRPORT | NY | ||
| — | 585-668-8XXX | 8000–8999 | Available | FAIRPORT | NY | ||
| 2025-11-03 | 585-668-9XXX | 9000–9999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | FAIRPORT | NY |
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.