NumberResearchThousands-blocks in 585-547
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 585-547 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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| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2011-10-17 | 585-547-0XXX | 0000–0999 | Assigned | BANDWIDTH.COM CLEC, LLC - NY | 997E | DARIEN | NY |
| 2010-06-01 | 585-547-1XXX | 1000–1999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | DARIEN | NY |
| — | 585-547-2XXX | 2000–2999 | Reserved | CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY | 0096 | DARIEN | NY |
| — | 585-547-3XXX | 3000–3999 | Reserved | CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY | 0096 | DARIEN | NY |
| 2019-03-26 | 585-547-4XXX | 4000–4999 | Assigned | CORETEL NEW YORK, INC. - NY | 1215 | DARIEN | NY |
| 2018-06-11 | 585-547-5XXX | 5000–5999 | Assigned | ONVOY, LLC- NY | 384C | DARIEN | NY |
| 2026-03-05 | 585-547-6XXX | 6000–6999 | Assigned | TERRA NOVA TELECOM INC. | 145J | DARIEN | NY |
| 2015-05-12 | 585-547-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | DARIEN | NY |
| 2019-05-20 | 585-547-8XXX | 8000–8999 | Assigned | CORETEL NEW YORK, INC. - NY | 1215 | DARIEN | NY |
| — | 585-547-9XXX | 9000–9999 | Reserved | CITIZENS TELECOMM CO OF NY DBA FRONTIER COMM OF NY | 0096 | DARIEN | 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.