| Organization | Blocks | Addresses | First registered |
|---|---|---|---|
| Iskratel d.o.o. | 5 | 83.9 million | 8 Sep 2000 |
| ATech elektronika d.o.o. | 1 | 16.8 million | 15 Dec 2005 |
| Beyond Devices d.o.o. | 1 | 16.8 million | 2 Feb 2010 |
| Borea | 1 | 16.8 million | 18 Feb 2012 |
| CETRTA POT, d.o.o., Kranj | 1 | 16.8 million | 4 Jan 2006 |
| Initra d.o.o. | 1 | 16.8 million | 16 Nov 2008 |
| Instrumentation Technologies d.d. | 1 | 16.8 million | 17 May 2009 |
| IPS d.o.o. | 1 | 16.8 million | 22 Sep 2004 |
| Iskra Sistemi d.d. | 1 | 16.8 million | 8 Apr 2007 |
| Iskra Transmission d.d. | 1 | 16.8 million | 21 Dec 2003 |
| ISKRAEMECO | 1 | 16.8 million | 8 Apr 2003 |
| Jantar d.o.o. | 1 | 16.8 million | 15 Feb 2013 |
| Kolektor group | 1 | 16.8 million | 24 Aug 2005 |
| L-tek d.o.o. | 1 | 16.8 million | 2 Feb 2011 |
| MCM Systems Ltd | 1 | 16.8 million | 29 Mar 2002 |
| Neptune Digital | 1 | 16.8 million | 16 Jun 2007 |
| PoLabs d.o.o. | 1 | 16.8 million | 11 Mar 2021 |
| Smarteh d.o.o. | 1 | 16.8 million | 10 Oct 2009 |
| Spica international | 1 | 16.8 million | 25 Jun 2010 |
| Swarco LEA d.o.o. | 1 | 16.8 million | 14 Feb 2013 |
| TASKING Labs | 1 | 16.8 million | 8 Sep 2000 |
| Xenya d.o.o. | 1 | 16.8 million | 19 Jul 2011 |
| Dat-Con d.o.o. | 2 | 1.1 million | 8 Nov 2018 |
| Datapan d.o.o. | 1 | 1 million | 26 Sep 2019 |
| Dewesoft d.o.o. | 1 | 1 million | 10 Dec 2017 |
| Elektronika Naglic d.o.o. | 1 | 1 million | 16 Oct 2015 |
| Ngen d.o.o. | 1 | 1 million | 19 Dec 2024 |
| RLS d.o.o. | 1 | 1 million | 7 May 2026 |
| SMT D.O.O. | 2 | 8.2 thousand | 30 Jul 2008 |
| Alfa Proxima d.o.o. | 1 | 4.1 thousand | 29 Nov 2022 |
| Cosylab d.d. | 1 | 4.1 thousand | 13 Nov 2016 |
| Epiko, elektronski sistemi d.o.o. | 1 | 4.1 thousand | 3 Jan 2010 |
| Eurotronik Kranj d.o.o. | 1 | 4.1 thousand | 26 Mar 2017 |
| Evo-Teh d.o.o. | 1 | 4.1 thousand | 17 Jan 2010 |
| FOTONA D.D. | 1 | 4.1 thousand | 16 Nov 2014 |
| Gridpulse c.o.o. | 1 | 4.1 thousand | 23 May 2023 |
| IMP Telekom | 1 | 4.1 thousand | 30 Jul 2008 |
| LEA d.o.o. | 1 | 4.1 thousand | 30 Jul 2008 |
| Margento R&D | 1 | 4.1 thousand | 6 Feb 2011 |
| Plut d.o.o. | 1 | 4.1 thousand | 12 Mar 2024 |
| Prima sistemi | 1 | 4.1 thousand | 7 Aug 2011 |
| SkyLabs d.o.o. | 1 | 4.1 thousand | 20 Oct 2023 |
| Solvera Lynx d.d. | 1 | 4.1 thousand | 13 Dec 2015 |
| Tevel d.o.o. | 1 | 4.1 thousand | 24 Sep 2026 |
| UB330.net d.o.o. | 1 | 4.1 thousand | 27 Mar 2016 |
| VTZ d.o.o. | 1 | 4.1 thousand | 30 Jul 2008 |
Every organization with blocks registered in Slovenia, sorted by total address space.