NumberResearchThousands-blocks in 585-412
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 585-412 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
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 585-412-0XXX | 0000–0999 | Reserved | TC SYSTEMS, INC. - NY | 7140 | CANANDAGUA | NY |
| — | 585-412-1XXX | 1000–1999 | Available | CANANDAGUA | NY | ||
| 2008-05-01 | 585-412-2XXX | 2000–2999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | CANANDAGUA | NY |
| 2010-06-25 | 585-412-3XXX | 3000–3999 | Assigned | METROPCS, INC. | 5562 | CANANDAGUA | NY |
| 2007-07-23 | 585-412-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | CANANDAGUA | NY |
| 2007-11-20 | 585-412-5XXX | 5000–5999 | Assigned | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NY | 7133 | CANANDAGUA | NY |
| 2008-01-24 | 585-412-6XXX | 6000–6999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | CANANDAGUA | NY |
| 2006-07-31 | 585-412-7XXX | 7000–7999 | Assigned | FRONTIER TELEPHONE OF ROCHESTER, INC. | 0121 | CANANDAGUA | NY |
| 2010-05-26 | 585-412-8XXX | 8000–8999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | CANANDAGUA | NY |
| 2016-02-22 | 585-412-9XXX | 9000–9999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | CANANDAGUA | 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.