| Prefix | Block | Addresses | Country | First registered |
|---|---|---|---|---|
| 00:50:C2:25:0 | IAB | 4.1 thousand | DE | 26 Oct 2008 |
| 00:50:C2:29:B | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:55:D | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:77:F | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:8B:9 | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:A0:A | IAB | 4.1 thousand | DE | 14 Dec 2008 |
| 00:50:C2:AF:2 | IAB | 4.1 thousand | DE | 12 Jul 2009 |
| 00:50:C2:C0:0 | IAB | 4.1 thousand | DE | 7 Feb 2010 |
| 00:50:C2:CD:1 | IAB | 4.1 thousand | DE | 18 Jul 2010 |
| 00:50:C2:E2:5 | IAB | 4.1 thousand | DE | 7 Aug 2011 |
| 00:50:C2:F2:A | IAB | 4.1 thousand | DE | 5 Feb 2012 |
| 00:50:C2:FD:F | IAB | 4.1 thousand | DE | 12 Aug 2012 |
| 40:D8:55:0B:7 | IAB | 4.1 thousand | DE | 10 Mar 2013 |
| 40:D8:55:11:D | IAB | 4.1 thousand | DE | 16 Jun 2013 |
| 70:B3:D5:C5:B | MA-S | 4.1 thousand | DE | 16 Nov 2014 |
| 70:B3:D5:FD:A | MA-S | 4.1 thousand | DE | 20 Apr 2014 |
| 8C:1F:64:57:0 | MA-S | 4.1 thousand | DE | 25 Aug 2026 |
Every block registered to ACD Elektronik GmbH in the IEEE registries, complete. Free-text search also matches former owners.