NumberResearchThousands-blocks in 859-535
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 859-535 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 859 blocks
Most active assignees, all time — NPA 859
New assignments by month
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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2016-09-08 | 859-535-0XXX | 0000–0999 | Assigned | ONVOY, LLC - KY | 896E | MACKVILLE | KY |
| 2016-09-08 | 859-535-1XXX | 1000–1999 | Assigned | ONVOY, LLC - KY | 896E | MACKVILLE | KY |
| 2020-06-17 | 859-535-2XXX | 2000–2999 | Assigned | TELNYX LLC | 073H | MACKVILLE | KY |
| 2020-10-12 | 859-535-3XXX | 3000–3999 | Assigned | ONVOY, LLC - KY | 896E | MACKVILLE | KY |
| 2020-10-12 | 859-535-4XXX | 4000–4999 | Assigned | ONVOY, LLC - KY | 896E | MACKVILLE | KY |
| — | 859-535-5XXX | 5000–5999 | Available | MACKVILLE | KY | ||
| 2021-11-29 | 859-535-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | MACKVILLE | KY |
| 2011-11-22 | 859-535-7XXX | 7000–7999 | Assigned | AT&T ENTERPRISES, LLC | 516C | MACKVILLE | KY |
| 2019-03-21 | 859-535-8XXX | 8000–8999 | Assigned | ONVOY, LLC - KY | 896E | MACKVILLE | KY |
| 2019-03-21 | 859-535-9XXX | 9000–9999 | Assigned | ONVOY, LLC - KY | 896E | MACKVILLE | KY |
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.