| Prefix | Block | Addresses | Country | First registered |
|---|---|---|---|---|
| 44:D5:F2:A | MA-M | 1 million | DE | 16 May 2019 |
| 00:50:C2:39:3 | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:F8:0 | IAB | 4.1 thousand | DE | 29 Apr 2012 |
| 70:B3:D5:41:B | MA-S | 4.1 thousand | DE | 6 Oct 2018 |
| 70:B3:D5:7F:D | MA-S | 4.1 thousand | DE | 11 Sep 2017 |
| 70:B3:D5:AB:4 | MA-S | 4.1 thousand | DE | 21 Feb 2016 |
| 70:B3:D5:BA:F | MA-S | 4.1 thousand | DE | 4 Feb 2018 |
| 70:B3:D5:C6:4 | MA-S | 4.1 thousand | DE | 27 May 2018 |
Every block registered to SYS TEC electronic GmbH in the IEEE registries, complete. Free-text search also matches former owners.