NumberResearchThousands-blocks in 585-539
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 585-539 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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2017-04-20 | 585-539-0XXX | 0000–0999 | Assigned | TELNYX LLC | 073H | CUBA | NY |
| 2015-12-10 | 585-539-1XXX | 1000–1999 | Assigned | PEERLESS NETWORK OF NEW YORK, LLC - NY | 155E | CUBA | NY |
| — | 585-539-2XXX | 2000–2999 | Available | CUBA | NY | ||
| — | 585-539-3XXX | 3000–3999 | Available | CUBA | NY | ||
| 2021-03-19 | 585-539-4XXX | 4000–4999 | Assigned | ONVOY, LLC- NY | 384C | CUBA | NY |
| 2021-03-19 | 585-539-5XXX | 5000–5999 | Assigned | ONVOY, LLC- NY | 384C | CUBA | NY |
| 2020-06-03 | 585-539-6XXX | 6000–6999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | CUBA | NY |
| 2016-03-15 | 585-539-7XXX | 7000–7999 | Assigned | ONVOY, LLC- NY | 384C | CUBA | NY |
| 2016-03-15 | 585-539-8XXX | 8000–8999 | Assigned | ONVOY, LLC- NY | 384C | CUBA | NY |
| 2019-08-16 | 585-539-9XXX | 9000–9999 | Assigned | ONVOY, LLC- NY | 384C | CUBA | 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.