| Prefix | Block | Addresses | First registered | Organization |
|---|---|---|---|---|
| 00:50:C2:05:9 | IAB | 4.1 thousand | 30 Jul 2008 | Austco Marketing & Service (USA) ltd. |
| 00:50:C2:78:7 | IAB | 4.1 thousand | 30 Jul 2008 | Austco Marketing & Service (USA) ltd. |
| 00:50:C2:9F:8 | IAB | 4.1 thousand | 7 Dec 2008 | Austco Marketing & Service (USA) ltd. |
| 00:50:C2:C2:6 | IAB | 4.1 thousand | 7 Mar 2010 | Austco Marketing & Service (USA) ltd. |
| E8:C3:20 | MA-L | 16.8 million | 30 Mar 2011 | Austco Marketing & Service (USA) ltd. |
Former Austco Communication Systems Pty Ltd MAC address blocks
The IEEE registry once carried 5 blocks registered to Austco Communication Systems Pty Ltd. All 5 blocks are now registered to Austco Marketing & Service (USA) ltd.. Austco Marketing & Service (USA) ltd. took over all of them.
Complete as of the current IEEE registry deploy. Dates are when each registration was first observed in public data, not legal assignment dates.