| 00:05:ED | Technikum Joanneaum GmbH | Technikum Joanneum GmbH | 5 Jun 2002 |
| 00:60:36 | AUSTRIAN RESEARCH CENTER | AUSTRIAN RESEARCH CENTER SEIBERSDORF | 5 Jun 2002 |
| 00:60:65 | BERNECKER & RAINER | BERNECKER & RAINER INDUSTRIE-ELEKTRONIC GmbH | 5 Jun 2002 |
| 00:E0:A8 | SAT GMBH&CO | SAT GmbH & Co. | 5 Jun 2002 |
| 00:05:8E | Ahead Communications System GmbH | Flextronics International GmbH & Co. Nfg. KG | 12 Feb 2004 |
| 00:04:D2 | Adcon Telemetry AG | Adcon Telemetry GmbH | 6 Feb 2005 |
| 00:06:54 | Maxxio Technologies | Winpresa Building Automation Technologies GmbH | 19 Jul 2008 |
| 00:60:36 | AUSTRIAN RESEARCH CENTER SEIBERSDORF | AIT Austrian Institute of Technology GmbH | 4 Jul 2009 |
| 00:07:39 | Motion Media Technology Ltd. | Scott Group Austria Gmbh | 12 Aug 2009 |
| 00:07:39 | Scott Group Austria Gmbh | Scotty Group Austria Gmbh | 22 Sep 2009 |
| 00:14:AD | Gassner Wiege- u. Meßtechnik GmbH | Gassner Wiege- u. MeÃtechnik GmbH | 7 Nov 2009 |
| 00:12:08 | Gantner Electronic GmbH | Gantner Instruments GmbH | 18 Nov 2009 |
| 00:14:AD | Gassner Wiege- u. MeÃtechnik GmbH | Gassner Wiege- u. Meßtechnik GmbH | 6 Feb 2010 |
| 00:14:AD | Gassner Wiege- u. Meßtechnik GmbH | Gassner Wiege- u. MeÃtechnik GmbH | 9 Jun 2010 |
| 00:14:AD | Gassner Wiege- u. MeÃtechnik GmbH | Gassner Wiege- u. MeÃÂtechnik GmbH | 24 Aug 2010 |
| 00:14:AD | Gassner Wiege- u. MeÃÂtechnik GmbH | Gassner Wiege- u. MeÃtechnik GmbH | 25 Aug 2010 |
| 00:14:AD | Gassner Wiege- u. MeÃtechnik GmbH | Gassner Wiege- u. MeÃÂtechnik GmbH | 17 Nov 2011 |
| 00:14:AD | Gassner Wiege- u. MeÃÂtechnik GmbH | Gassner Wiege- u. Meßtechnik GmbH | 18 Nov 2011 |
| 00:14:AD | Gassner Wiege- u. Meßtechnik GmbH | Gassner Wiege- u. MeÃÂÃÂÃÂ
øtechnik GmbH | 17 Sep 2012 |
| 00:14:AD | Gassner Wiege- u. MeÃÂÃÂÃÂ
øtechnik GmbH | Gassner Wiege- und MeÃtechnik GmbH | 29 Nov 2012 |
| CC:EE:D9 | Deto Mechatronic GmbH | VAHLE DETO GmbH | 25 Mar 2015 |
| 00:14:AD | Gassner Wiege- und MeÃtechnik GmbH | Gassner Wiege- und Meßtechnik GmbH | 27 Aug 2015 |
| 00:21:83 | VATECH HYDRO | ANDRITZ HYDRO GmbH | 14 Oct 2016 |
| 00:0C:AB | COMMEND International | Commend International GmbH | 28 Feb 2017 |
| 00:11:33 | Siemens Austria SIMEA | Siemens AG Austria | 27 Mar 2018 |
| CC:EE:D9 | VAHLE DETO GmbH | VAHLE Automation GmbH | 22 May 2018 |
| 24:93:CA | Voxtronic Technology Computer-Systeme GmbH | Voxtronic Austria | 19 Sep 2018 |
| 24:93:CA | Voxtronic Austria | Voxtronic Technology Computer-Systeme GmbH | 20 Sep 2018 |
| 24:93:CA | Voxtronic Technology Computer-Systeme GmbH | Voxtronic Austria | 22 Sep 2018 |
| 00:60:65 | BERNECKER & RAINER INDUSTRIE-ELEKTRONIC GmbH | B&R Industrial Automation GmbH | 8 Aug 2020 |
| 70:B3:D5:A7:9 | SR RESEARCH LTD | NOREYA Technology e.U. | 18 Nov 2020 |
| 64:B6:23 | CCS Care Communication Solutions GmbH | Schrack Seconet Care Communication GmbH | 24 Jun 2021 |
| BC:A1:3A | SES-imagotag | VusionGroup | 9 Jul 2024 |
| 2C:2D:48 | bct electronic GesmbH | Commend International GmbH | 31 Dec 2024 |
| 70:B3:D5:01:D | Weigl Elektronik & Mediaprojekte | Weigl GmbH & Co KG | 25 Nov 2025 |
| 00:11:1E | ETHERNET Powerlink Standarization Group (EPSG) | B&R Industrial Automation GmbH | 9 Jan 2026 |
| 00:15:1E | ETHERNET Powerlink Standarization Group (EPSG) | B&R Industrial Automation GmbH | 9 Jan 2026 |