NumberResearchThousands-blocks in 606-733
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 606-733 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 |
|---|---|---|---|---|---|---|---|
| — | 606-733-0XXX | 0000–0999 | Reserved | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BENHAMLNCH | KY |
| 2016-06-01 | 606-733-1XXX | 1000–1999 | Assigned | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BENHAMLNCH | KY |
| 2016-09-13 | 606-733-2XXX | 2000–2999 | Assigned | ONVOY, LLC - KY | 896E | BENHAMLNCH | KY |
| — | 606-733-3XXX | 3000–3999 | Reserved | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BENHAMLNCH | KY |
| 2016-09-13 | 606-733-4XXX | 4000–4999 | Assigned | ONVOY, LLC - KY | 896E | BENHAMLNCH | KY |
| — | 606-733-5XXX | 5000–5999 | Reserved | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BENHAMLNCH | KY |
| 2013-01-28 | 606-733-6XXX | 6000–6999 | Assigned | AT&T ENTERPRISES, LLC | 516C | BENHAMLNCH | KY |
| 2020-10-08 | 606-733-7XXX | 7000–7999 | Assigned | ONVOY, LLC - KY | 896E | BENHAMLNCH | KY |
| 2020-05-20 | 606-733-8XXX | 8000–8999 | Assigned | TELNYX LLC | 073H | BENHAMLNCH | KY |
| — | 606-733-9XXX | 9000–9999 | Reserved | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | BENHAMLNCH | 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.