| Prefix | Block | Addresses | Country | First registered |
|---|---|---|---|---|
| 50:2D:F4 | MA-L | 16.8 million | DE | 5 Jan 2010 |
| 00:50:C2:14:4 | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:32:A | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:39:2 | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:3B:A | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:45:9 | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:48:5 | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:52:9 | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:5A:7 | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:5E:0 | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:64:4 | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:67:F | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:6E:2 | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:72:A | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:76:5 | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:78:2 | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:7D:1 | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:80:A | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:83:F | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:87:5 | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:8C:E | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:90:E | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:92:F | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:95:4 | IAB | 4.1 thousand | DE | 30 Jul 2008 |
| 00:50:C2:99:8 | IAB | 4.1 thousand | DE | 8 Oct 2008 |
| 00:50:C2:A0:C | IAB | 4.1 thousand | DE | 14 Dec 2008 |
| 00:50:C2:A5:B | IAB | 4.1 thousand | DE | 22 Feb 2009 |
| 00:50:C2:A7:F | IAB | 4.1 thousand | DE | 22 Mar 2009 |
| 00:50:C2:AD:1 | IAB | 4.1 thousand | DE | 7 Jun 2009 |
| 00:50:C2:B1:C | IAB | 4.1 thousand | DE | 23 Aug 2009 |
| 00:50:C2:B5:7 | IAB | 4.1 thousand | DE | 4 Oct 2009 |
| 00:50:C2:B6:A | IAB | 4.1 thousand | DE | 25 Oct 2009 |
| 00:50:C2:B6:B | IAB | 4.1 thousand | DE | 25 Oct 2009 |
| 00:50:C2:BB:F | IAB | 4.1 thousand | DE | 27 Dec 2009 |
| 00:50:C2:BC:3 | IAB | 4.1 thousand | DE | 27 Dec 2009 |
| 00:50:C2:BF:7 | IAB | 4.1 thousand | DE | 31 Jan 2010 |
Every block registered to Phytec Messtechnik GmbH in the IEEE registries, complete. Free-text search also matches former owners.