NumberResearchThousands-blocks in 606-392
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 606-392 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 606 blocks
Most active assignees, all time — NPA 606
New assignments by month
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Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| — | 606-392-0XXX | 0000–0999 | Reserved | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | MT VERNON | KY |
| 2006-10-20 | 606-392-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MT VERNON | KY |
| 2007-04-26 | 606-392-2XXX | 2000–2999 | Assigned | TWC IP ENABLED SERVICES, LLC | 793K | MT VERNON | KY |
| 2009-04-08 | 606-392-3XXX | 3000–3999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | MT VERNON | KY |
| 2004-04-30 | 606-392-4XXX | 4000–4999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | MT VERNON | KY |
| 2022-03-21 | 606-392-5XXX | 5000–5999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY | 6500 | MT VERNON | KY |
| 2012-02-10 | 606-392-6XXX | 6000–6999 | Assigned | WINDSTREAM KENTUCKY EAST, INC. - LONDON | 9691 | MT VERNON | KY |
| 2024-11-12 | 606-392-7XXX | 7000–7999 | Assigned | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - KY | 6500 | MT VERNON | KY |
| 2010-02-19 | 606-392-8XXX | 8000–8999 | Assigned | POWERTEL KENTUCKY LICENSES, INC. | 365C | MT VERNON | KY |
| 2006-02-03 | 606-392-9XXX | 9000–9999 | Assigned | POWERTEL KENTUCKY LICENSES, INC. | 365C | MT VERNON | KY |
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.