| Prefix | Block | Addresses | Country | First registered |
|---|---|---|---|---|
| 00:50:C2:23:C | IAB | 4.1 thousand | US | 30 Jul 2008 |
| 00:50:C2:BC:4 | IAB | 4.1 thousand | US | 27 Dec 2009 |
| 00:50:C2:F0:9 | IAB | 4.1 thousand | US | 25 Dec 2011 |
| 80:E4:DA:0 | MA-M | 1 million | US | 16 Oct 2015 |
| 40:D8:55:07:F | IAB | 4.1 thousand | US | 13 Jan 2013 |
| 40:D8:55:1D:7 | IAB | 4.1 thousand | US | 15 Dec 2013 |
Every block registered to Wheatstone Corporation in the IEEE registries, complete. Free-text search also matches former owners.