| Prefix | Block | Addresses | Country | First registered |
|---|---|---|---|---|
| 00:50:C2:8E:D | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 70:B3:D5:02:8 | MA-S | 4.1 thousand | DE | 21 Feb 2016 |
| 70:B3:D5:34:5 | MA-S | 4.1 thousand | DE | 1 Dec 2018 |
| 8C:1F:64:2D:A | MA-S | 4.1 thousand | DE | 30 Mar 2026 |
| 8C:1F:64:69:E | MA-S | 4.1 thousand | DE | 15 Dec 2021 |
| 8C:1F:64:7F:2 | MA-S | 4.1 thousand | DE | 15 May 2024 |
Every block registered to AT-Automation Technology GmbH in the IEEE registries, complete. Free-text search also matches former owners.