NumberResearchThousands-blocks in 606-334
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 606-334 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
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | Thousands-block | Last 4 digits | Status | Assignee | OCN | Rate center | State |
|---|---|---|---|---|---|---|---|
| 2024-04-16 | 606-334-0XXX | 0000–0999 | Assigned | ONVOY SPECTRUM, LLC | 624H | HYDEN | KY |
| — | 606-334-1XXX | 1000–1999 | Available | HYDEN | KY | ||
| — | 606-334-2XXX | 2000–2999 | Available | HYDEN | KY | ||
| — | 606-334-3XXX | 3000–3999 | Available | HYDEN | KY | ||
| — | 606-334-4XXX | 4000–4999 | Available | HYDEN | KY | ||
| — | 606-334-5XXX | 5000–5999 | Available | HYDEN | KY | ||
| 2019-05-20 | 606-334-6XXX | 6000–6999 | Assigned | TELEPORT COMMUNICATIONS AMERICA, LLC - KY | 8406 | HYDEN | KY |
| 2023-01-24 | 606-334-7XXX | 7000–7999 | Assigned | LEVEL 3 COMMUNICATIONS, LLC - KY | 4369 | HYDEN | KY |
| 2015-02-11 | 606-334-8XXX | 8000–8999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | HYDEN | KY |
| — | 606-334-9XXX | 9000–9999 | Available | HYDEN | 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.