| Organization | Blocks | Addresses | First registered |
|---|---|---|---|
| VusionGroup | 15 | 252 million | 27 Mar 2019 |
| B&R Industrial Automation GmbH | 3 | 50.3 million | 22 Apr 1998 |
| Commend International GmbH | 3 | 50.3 million | 5 Mar 2003 |
| Loxone Electronics GmbH | 2 | 33.6 million | 16 Dec 2012 |
| ekey biometric systems gmbh | 2 | 17.8 million | 16 Oct 2015 |
| go-e GmbH | 2 | 17.8 million | 10 Jul 2020 |
| Siemens AG Austria | 2 | 17.8 million | 25 Apr 2004 |
| OMICRON electronics GmbH | 5 | 16.8 million | 30 Jul 2008 |
| Cubro Acronet GesmbH | 2 | 16.8 million | 10 Jan 2016 |
| EVK DI Kerschhaggl GmbH | 2 | 16.8 million | 30 Jul 2008 |
| Technische Alternative GmbH | 2 | 16.8 million | 30 Jul 2008 |
| A&R TECH | 1 | 16.8 million | 20 Jul 2013 |
| abatec group AG | 1 | 16.8 million | 19 Jul 2013 |
| Adcon Telemetry GmbH | 1 | 16.8 million | 24 Jan 2001 |
| AIT Austrian Institute of Technology GmbH | 1 | 16.8 million | 22 Apr 1998 |
| AKG Acoustics GmbH | 1 | 16.8 million | 29 Aug 2013 |
| Alge-Timing GmbH | 1 | 16.8 million | 10 Feb 2010 |
| ANDRITZ HYDRO GmbH | 1 | 16.8 million | 18 Jun 2008 |
| Angelbird Technologies GmbH | 1 | 16.8 million | 11 Sep 2025 |
| Anton Paar GmbH | 1 | 16.8 million | 23 Jul 2003 |
| aphona Kommunikationssysteme | 1 | 16.8 million | 8 Apr 2003 |
| AUDIO MOBIL Elektronik GmbH | 1 | 16.8 million | 25 Mar 2017 |
| AUG Elektronik GmbH | 1 | 16.8 million | 5 Sep 2009 |
| Austrian Audio GmbH | 1 | 16.8 million | 30 Apr 2021 |
| automationNEXT GmbH | 1 | 16.8 million | 22 Nov 2013 |
| AV Digital | 1 | 16.8 million | 25 Apr 2003 |
| AVI Systems GmbH | 1 | 16.8 million | 28 Jun 2019 |
| AVL List GmbH | 1 | 16.8 million | 2 Feb 2001 |
| BACHMANN ELECTRONIC GmbH | 1 | 16.8 million | 22 Apr 1998 |
| BASIC MERTON HANDELSGES.M.B.H. | 1 | 16.8 million | 8 Sep 2000 |
| BHR Tech GmbH | 1 | 16.8 million | 19 Jun 2019 |
| Bluetechnix GmbH | 1 | 16.8 million | 17 May 2009 |
| CARINTHIAN TECH INSTITUTE | 1 | 16.8 million | 8 Sep 2000 |
| Center Communication Systems GmbH | 1 | 16.8 million | 8 Apr 2007 |
| CNSystems | 1 | 16.8 million | 24 Oct 2001 |
| CONELCOM GmbH | 1 | 16.8 million | 27 Aug 2016 |
| cTrixs International GmbH. | 1 | 16.8 million | 23 Jul 2009 |
| DaTARIUS Technologies GmbH | 1 | 16.8 million | 7 Feb 2003 |
| Datasoft ISDN Systems GmbH | 1 | 16.8 million | 29 Mar 2002 |
| DATENTECHNIK GmbH | 1 | 16.8 million | 22 Apr 1998 |
| Digital Everywhere Unterhaltungselektronik GmbH | 1 | 16.8 million | 10 Oct 2004 |
| din Dietmar Nocker Facilitymanagement GmbH | 1 | 16.8 million | 15 Feb 2009 |
| EFKON AG | 1 | 16.8 million | 1 Mar 2007 |
| Elin Ebg Traction Gmbh | 1 | 16.8 million | 7 May 2005 |
| EMPORIA TELECOM Produktions- und VertriebsgesmbH & Co KG | 1 | 16.8 million | 7 Apr 2010 |
| evon GmbH | 1 | 16.8 million | 24 May 2018 |
| Flexit Group GmbH | 1 | 16.8 million | 1 Mar 2007 |
| Flextronics International GmbH & Co. Nfg. KG | 1 | 16.8 million | 17 Apr 2001 |
| Frequentis | 1 | 16.8 million | 8 Sep 2000 |
| Fronius Schweissmaschinen | 1 | 16.8 million | 9 Nov 2000 |
| Gantner Electronic GmbH | 1 | 16.8 million | 3 Feb 2024 |
| Gantner Instruments GmbH | 1 | 16.8 million | 4 Aug 2004 |
| Gassner Wiege- und Meßtechnik GmbH | 1 | 16.8 million | 22 May 2005 |
| Ginzinger electronic systems | 1 | 16.8 million | 7 Dec 2008 |
| GRIPS ELECTRONIC GMBH | 1 | 16.8 million | 22 Apr 1998 |
| Hagleitner Hygiene International GmbH | 1 | 16.8 million | 5 Apr 2014 |
| Hainzl Industriesysteme GmbH | 1 | 16.8 million | 21 Dec 2008 |
| Hanazeder Electronic GmbH | 1 | 16.8 million | 27 Jan 2006 |
| Hella Sonnen- und Wetterschutztechnik GmbH | 1 | 16.8 million | 8 Apr 2014 |
| HIRSCHMANN AUSTRIA GMBH | 1 | 16.8 million | 8 Sep 2000 |
| Interroll Software & Electronics GmbH | 1 | 16.8 million | 23 Aug 2023 |
| ITEC GmbH | 1 | 16.8 million | 5 Oct 2007 |
| JM-DATA GmbH | 1 | 16.8 million | 17 Jan 2017 |
| JOYNED GmbH | 1 | 16.8 million | 23 Dec 2023 |
| KAPSCH AG | 1 | 16.8 million | 22 Apr 1998 |
| KEBA GmbH | 1 | 16.8 million | 22 Apr 1998 |
| Keytronix | 1 | 16.8 million | 25 Sep 2007 |
| Knapp Logistik Automation GmbH | 1 | 16.8 million | 2 Nov 2008 |
| KWB Gmbh | 1 | 16.8 million | 10 Aug 2011 |
| LARsys-Automation GmbH | 1 | 16.8 million | 6 Mar 2012 |
| Linked IP GmbH | 1 | 16.8 million | 22 Jul 2010 |
| LOYTEC electronics GmbH | 1 | 16.8 million | 3 Aug 2002 |
| Lunatone Industrielle Elektronik GmbH | 1 | 16.8 million | 15 Aug 2005 |
| Miba Battery Systems GmbH | 1 | 16.8 million | 12 Sep 2024 |
| Modelleisenbahn GmbH | 1 | 16.8 million | 17 Jul 2012 |
| MONDIAL electronic | 1 | 16.8 million | 30 Jan 2002 |
| Novomatic AG | 1 | 16.8 million | 19 Nov 2004 |
| Nuki Home Solutions GmbH | 1 | 16.8 million | 15 Apr 2016 |
| OMNIKEY GmbH. | 1 | 16.8 million | 13 Jun 2006 |
| Oregano Systems - Design & Consulting GmbH | 1 | 16.8 million | 10 Sep 2016 |
| Otto Bock Healthcare Products GmbH | 1 | 16.8 million | 9 Sep 2022 |
| Pascom Kommunikations systeme GmbH. | 1 | 16.8 million | 31 Dec 2007 |
| Prompttec Product Management GmbH | 1 | 16.8 million | 5 Mar 2003 |
| Proxmox Server Solutions GmbH | 1 | 16.8 million | 16 Jun 2023 |
| RSE Informations Technologie GmbH | 1 | 16.8 million | 22 Mar 2005 |
| ruwido austria gmbh | 1 | 16.8 million | 12 Jun 2014 |
| SAT GmbH & Co. | 1 | 16.8 million | 22 Apr 1998 |
| SCHRACK Seconet AG | 1 | 16.8 million | 14 Jul 2006 |
| Schrack Seconet Care Communication GmbH | 1 | 16.8 million | 17 Jun 2020 |
| Schwechat - RISE | 1 | 16.8 million | 3 Apr 2004 |
| Scotty Group Austria Gmbh | 1 | 16.8 million | 24 Oct 2001 |
| Seidel Elektronik GmbH Nfg.KG | 1 | 16.8 million | 29 Sep 2004 |
| SIGMATEK GMBH & CO. KG | 1 | 16.8 million | 8 Sep 2000 |
| Skidata AG | 1 | 16.8 million | 23 Nov 2000 |
| so-logic | 1 | 16.8 million | 7 Mar 2015 |
| Sprecher Automation GmbH | 1 | 16.8 million | 17 Mar 2004 |
| StreamUnlimited Engineering GmbH | 1 | 16.8 million | 8 Nov 2016 |
| STRONG Ges.m.b.H. | 1 | 16.8 million | 24 Apr 2010 |
| Synergics Technologies GmbH | 1 | 16.8 million | 26 Jan 2016 |
| Systems in Progress Holding GmbH | 1 | 16.8 million | 21 Dec 2003 |
| Technikum Joanneum GmbH | 1 | 16.8 million | 4 Jun 2001 |
| TGW Mechanics GmbH | 1 | 16.8 million | 6 Apr 2022 |
| Topcall International AG | 1 | 16.8 million | 24 Oct 2001 |
| Tridonic GmbH & Co KG | 1 | 16.8 million | 18 Mar 2016 |
| TTTech Auto AG | 1 | 16.8 million | 18 Jun 2024 |
| TTTech Computertechnik AG | 1 | 16.8 million | 17 Sep 2011 |
| ULTIMATE Europe Transportation Equipment GmbH | 1 | 16.8 million | 20 Apr 2012 |
| VAHLE Automation GmbH | 1 | 16.8 million | 30 Nov 2011 |
| Vicos | 1 | 16.8 million | 11 Jul 2012 |
| Voxtronic Austria | 1 | 16.8 million | 8 Aug 2013 |
| Winpresa Building Automation Technologies GmbH | 1 | 16.8 million | 4 Jun 2001 |
| WolfVision Gmbh | 1 | 16.8 million | 2 Mar 2003 |
| Wyconn | 1 | 16.8 million | 12 Aug 2014 |
| Melecs EWS GmbH | 3 | 1.1 million | 3 Dec 2017 |
| Riegl Laser Measurement Systems GmbH | 3 | 1.1 million | 30 Jul 2008 |
| Dewetron GmbH | 2 | 1.1 million | 21 Feb 2016 |
| IST ElektronikgesmbH | 2 | 1.1 million | 16 Mar 2014 |
| Microtronics Engineering GmbH | 2 | 1.1 million | 18 Mar 2018 |
| System Industrie Electronic GmbH | 2 | 1.1 million | 27 Nov 2011 |
| tiga.eleven GmbH | 2 | 1.1 million | 8 Jan 2019 |
| Burisch Elektronik Bauteile GmbH | 1 | 1 million | 13 Nov 2020 |
| CreyNox GmbH | 1 | 1 million | 18 Jul 2020 |
| EGSTON Power Electronics GmbH | 1 | 1 million | 12 Mar 2026 |
| emicrotec | 1 | 1 million | 6 Oct 2025 |
| Greenbird Vertriebs GmbH | 1 | 1 million | 10 Sep 2018 |
| Hitachi Rail GTS Austria GmbH | 1 | 1 million | 14 Nov 2024 |
| iRoom GmbH | 1 | 1 million | 16 Oct 2015 |
| Labor Strauss Sicherungsanlagenbau GmbH | 1 | 1 million | 6 Mar 2016 |
| Mission Embedded GmbH | 1 | 1 million | 3 Jul 2016 |
| MTA Systems | 1 | 1 million | 11 Dec 2019 |
| my-PV GmbH | 1 | 1 million | 10 Jan 2016 |
| Ognios GmbH | 1 | 1 million | 16 Oct 2015 |
| PJG Systementwicklung GmbH | 1 | 1 million | 20 Mar 2016 |
| Protos GmbH | 1 | 1 million | 2 Apr 2017 |
| Reduxi GmbH | 1 | 1 million | 7 Mar 2025 |
| Siemens AG, MO MLT BG | 1 | 1 million | 27 Mar 2016 |
| SLOC GmbH | 1 | 1 million | 22 Apr 2018 |
| Swarovski Optik KG | 1 | 1 million | 12 Feb 2021 |
| Tyromotion GmbH | 1 | 1 million | 3 Nov 2022 |
| u::Lux GmbH | 1 | 1 million | 16 Oct 2015 |
| Unwired Networks | 1 | 1 million | 26 Feb 2017 |
| viRaTec GmbH | 1 | 1 million | 5 Nov 2017 |
| WEAD GmbH | 1 | 1 million | 15 Jul 2025 |
| Wittmann Kunststoffgeräte GmbH | 1 | 1 million | 10 Jul 2016 |
| xDevelop GmbH | 1 | 1 million | 12 Feb 2026 |
| eumig industrie-TV GmbH. | 12 | 49.2 thousand | 23 Jan 2011 |
| DiTEST Fahrzeugdiagnose GmbH | 6 | 24.6 thousand | 30 Jul 2008 |
| AutomationX GmbH | 2 | 8.2 thousand | 30 Jul 2008 |
| AVL DiTEST GmbH | 2 | 8.2 thousand | 6 Mar 2020 |
| Weigl GmbH & Co KG | 2 | 8.2 thousand | 20 Apr 2014 |
| Advanced Technology Solutions | 1 | 4.1 thousand | 30 Jul 2008 |
| Alpine Quantum Technologies GmbH | 1 | 4.1 thousand | 9 Dec 2022 |
| Amatic Industries GmbH | 1 | 4.1 thousand | 31 Jan 2010 |
| ANA-U GmbH | 1 | 4.1 thousand | 11 Sep 2011 |
| APEX Stabilizations GmbH | 1 | 4.1 thousand | 18 Jul 2019 |
| ASKI Industrie Elektronik Ges.m.b.H. | 1 | 4.1 thousand | 30 Jul 2008 |
| Aski Industrie Elektronik GmbH | 1 | 4.1 thousand | 19 Apr 2024 |
| AVL DiTEST | 1 | 4.1 thousand | 18 Oct 2018 |
| Axess AG | 1 | 4.1 thousand | 14 May 2017 |
| BITECHNIK GmbH | 1 | 4.1 thousand | 24 Aug 2022 |
| Bitt technology-A Ltd. | 1 | 4.1 thousand | 7 Dec 2008 |
| Collini Dienstleistungs GmbH | 1 | 4.1 thousand | 29 Oct 2017 |
| Comsat VertriebsgmbH | 1 | 4.1 thousand | 6 Feb 2011 |
| Consens Zeiterfassung GMBH | 1 | 4.1 thousand | 30 Jul 2008 |
| CONTEC GmbH | 1 | 4.1 thousand | 5 Jan 2011 |
| Contec Steuerungstechnik & Automation GmbH | 1 | 4.1 thousand | 30 Jul 2008 |
| Datacon | 1 | 4.1 thousand | 30 Jul 2008 |
| demmel products | 1 | 4.1 thousand | 17 Oct 2010 |
| dieEntwickler Elektronik GmbH | 1 | 4.1 thousand | 12 Apr 2015 |
| Dynamic Perspective GmbH | 1 | 4.1 thousand | 24 Jun 2018 |
| EBE Mobility & Green Energy GmbH | 1 | 4.1 thousand | 10 Oct 2020 |
| Ebner Electronic GmbH | 1 | 4.1 thousand | 24 Apr 2011 |
| eeas gmbh | 1 | 4.1 thousand | 2 Oct 2016 |
| ELEUSI GmbH | 1 | 4.1 thousand | 17 Dec 2017 |
| EMBED-IT OG | 1 | 4.1 thousand | 8 Aug 2010 |
| exceet electronics GesmbH | 1 | 4.1 thousand | 2 Oct 2016 |
| FeldTech GmbH | 1 | 4.1 thousand | 7 Jun 2015 |
| Fink Zeitsysteme GmbH | 1 | 4.1 thousand | 4 May 2022 |
| FMTec GmbH - Future Management Technologies | 1 | 4.1 thousand | 14 Apr 2022 |
| Gedomo GmbH | 1 | 4.1 thousand | 17 Dec 2017 |
| GIMCON | 1 | 4.1 thousand | 30 Jul 2008 |
| haber & koenig electronics gmbh | 1 | 4.1 thousand | 30 Jul 2008 |
| HECUBA Elektronik | 1 | 4.1 thousand | 30 Jul 2008 |
| Hiquel Elektronik- und Anlagenbau GmbH | 1 | 4.1 thousand | 12 Feb 2017 |
| hmt telematik GmbH | 1 | 4.1 thousand | 19 Jul 2019 |
| HPI High Pressure Instrumentation GmbH | 1 | 4.1 thousand | 31 Mar 2013 |
| Hutchison Drei Austria Gmbh | 1 | 4.1 thousand | 4 Apr 2025 |
| i-RED Infrarot Systeme GmbH | 1 | 4.1 thousand | 8 Feb 2009 |
| Ing. Knauseder Mechatronik GmbH | 1 | 4.1 thousand | 30 Jul 2008 |
| Inras GmbH | 1 | 4.1 thousand | 12 Jan 2014 |
| ITS Industrial Turbine Services GmbH | 1 | 4.1 thousand | 19 Feb 2017 |
| Kiefer technic GmbH | 1 | 4.1 thousand | 30 May 2010 |
| Kite Rise Technologies GmbH | 1 | 4.1 thousand | 18 Aug 2025 |
| Kommunikations- & Sicherheitssysteme Gesellschaft m.b.H | 1 | 4.1 thousand | 30 Jul 2008 |
| Lewitt GmbH | 1 | 4.1 thousand | 12 Apr 2025 |
| Logotherm Regelsysteme GmbH | 1 | 4.1 thousand | 30 Jul 2008 |
| MEDIORNET GmbH | 1 | 4.1 thousand | 30 Jul 2008 |
| meoENERGY | 1 | 4.1 thousand | 20 Jan 2021 |
| mmc kommunikationstechnologie gmbh | 1 | 4.1 thousand | 16 Aug 2023 |
| NOREYA Technology e.U. | 1 | 4.1 thousand | 26 Apr 2020 |
| Ottronic GmbH | 1 | 4.1 thousand | 26 Nov 2024 |
| PDTS GmbH | 1 | 4.1 thousand | 30 Jul 2008 |
| PKE Electronics AG | 1 | 4.1 thousand | 20 May 2018 |
| Privatquelle Gruber GmbH & CO KG | 1 | 4.1 thousand | 30 Jul 2008 |
| REDER Domotic GmbH | 1 | 4.1 thousand | 22 Sep 2013 |
| RELISTE Ges.m.b.H. | 1 | 4.1 thousand | 22 Oct 2017 |
| RESMED PTY LTD | 1 | 4.1 thousand | 24 Nov 2025 |
| Revo - Tec GmbH | 1 | 4.1 thousand | 28 Aug 2021 |
| Roessmann Engineering | 1 | 4.1 thousand | 30 Jul 2008 |
| SAI Informationstechnik | 1 | 4.1 thousand | 23 Nov 2008 |
| SciTronix | 1 | 4.1 thousand | 24 Apr 2016 |
| SPIE Dürr Austria GmbH | 1 | 4.1 thousand | 24 Mar 2026 |
| SSI Schaefer Peem | 1 | 4.1 thousand | 30 Jul 2008 |
| Swareflex GmbH | 1 | 4.1 thousand | 21 Aug 2011 |
| TableConnect GmbH | 1 | 4.1 thousand | 23 Sep 2020 |
| Teamaxess Ticketing GmbH | 1 | 4.1 thousand | 30 Jul 2008 |
| Tecwings GmBh | 1 | 4.1 thousand | 30 Jul 2008 |
| TELE Haase Steuergeräte Ges.m.b.H | 1 | 4.1 thousand | 28 Jun 2024 |
| Transelektronik Messgeräte GmbH | 1 | 4.1 thousand | 27 Mar 2016 |
| Trench Austria GmbH | 1 | 4.1 thousand | 30 Aug 2009 |
| TTTech | 1 | 4.1 thousand | 30 Jul 2008 |
| Wallner Automation GmbH | 1 | 4.1 thousand | 7 Dec 2014 |
| Wien Energie GmbH | 1 | 4.1 thousand | 10 May 2023 |
| Zehetner-Elektronik GmbH | 1 | 4.1 thousand | 15 Aug 2014 |
Every organization with blocks registered in Austria, sorted by total address space.