| Organization | Blocks | Addresses | First registered |
|---|---|---|---|
| MiXTelematics | 2 | 33.6 million | 8 Oct 2008 |
| Far South Networks | 2 | 16.8 million | 22 Jul 2012 |
| BK Electronics cc | 1 | 16.8 million | 25 Aug 2009 |
| Blick South Africa (Pty) Ltd | 1 | 16.8 million | 9 Feb 2008 |
| BRYANT TECHNOLOGY, LTD. | 1 | 16.8 million | 8 Sep 2000 |
| Cathexis | 1 | 16.8 million | 25 Sep 2006 |
| Conlog (Pty) Ltd | 1 | 16.8 million | 5 Oct 2013 |
| CSIR | 1 | 16.8 million | 22 Apr 1998 |
| DATAFUSION SYSTEMS | 1 | 16.8 million | 22 Apr 1998 |
| Dex Security Solutions | 1 | 16.8 million | 10 Mar 2005 |
| DIAMOND NETWORK TECH | 1 | 16.8 million | 22 Apr 1998 |
| Discovery Insure | 1 | 16.8 million | 29 Jul 2014 |
| GEW Technologies (PTY)Ltd | 1 | 16.8 million | 22 Apr 1998 |
| Hefcom Metering (Pty) Ltd | 1 | 16.8 million | 18 Jun 2011 |
| Hensoldt South Africa (Pty) Ltd | 1 | 16.8 million | 23 Sep 2005 |
| HRK SYSTEMS | 1 | 16.8 million | 22 Apr 1998 |
| ikeja wireless (pty) ltd | 1 | 16.8 million | 1 Oct 2024 |
| Impro Technologies | 1 | 16.8 million | 29 Nov 2006 |
| Inala Technologies | 1 | 16.8 million | 7 Jun 2012 |
| iPulse Systems | 1 | 16.8 million | 25 Apr 2004 |
| iWise Communications | 1 | 16.8 million | 15 Jan 2005 |
| Jurumani Solutions | 1 | 16.8 million | 8 Dec 2010 |
| Lesira Manufacturing Pty Ltd | 1 | 16.8 million | 23 Aug 2016 |
| LIBERTY TECHNOLOGY NETWORKING | 1 | 16.8 million | 8 Sep 2000 |
| MaxID (Pty) Ltd | 1 | 16.8 million | 15 Aug 2009 |
| Mecalc | 1 | 16.8 million | 24 Oct 2001 |
| Metacom (Pty) Ltd. | 1 | 16.8 million | 22 Aug 2006 |
| NAMAQUA COMPUTERWARE | 1 | 16.8 million | 22 Apr 1998 |
| Nanoteq | 1 | 16.8 million | 8 Oct 2008 |
| Nicon Systems (Pty) Limited | 1 | 16.8 million | 8 Sep 2000 |
| Nortech International | 1 | 16.8 million | 17 Jun 2005 |
| Omnipless Manufacturing (PTY) Ltd | 1 | 16.8 million | 22 Mar 2023 |
| Parsec (Pty) Ltd | 1 | 16.8 million | 20 Oct 2009 |
| Prism Holdings | 1 | 16.8 million | 4 Jun 2001 |
| Psitek (Pty) Ltd | 1 | 16.8 million | 6 Mar 2005 |
| PUNCH LINE HOLDING | 1 | 16.8 million | 8 Sep 2000 |
| Rapid Mobile (Pty) Ltd | 1 | 16.8 million | 20 Nov 2007 |
| Reutech Radar Systems (PTY) Ltd | 1 | 16.8 million | 26 Apr 2009 |
| Robonica (Pty) Ltd | 1 | 16.8 million | 12 Apr 2009 |
| Snuza International Pty. Ltd. | 1 | 16.8 million | 21 May 2016 |
| South African Broadcasting Corporation | 1 | 16.8 million | 29 Sep 2011 |
| SS Telecoms | 1 | 16.8 million | 18 Jun 2008 |
| Stratex Networks, Inc. | 1 | 16.8 million | 4 Dec 2000 |
| TECNETICS (PTY) LTD. | 1 | 16.8 million | 22 Apr 1998 |
| TELKOM SA, LTD. | 1 | 16.8 million | 8 Sep 2000 |
| UEC COMMERCIAL | 1 | 16.8 million | 22 Apr 1998 |
| Wavetrend Technologies (Pty) Limited | 1 | 16.8 million | 18 Aug 2007 |
| Wootware Computers (Pty) Ltd | 1 | 16.8 million | 28 May 2026 |
| Xstream Flow (Pty) Ltd | 1 | 16.8 million | 9 Apr 2011 |
| Keystone Electronic Solutions | 2 | 1.1 million | 30 Jul 2008 |
| MHE Electronics | 2 | 1.1 million | 7 Apr 2022 |
| AIO SYSTEMS | 1 | 1 million | 5 Sep 2025 |
| Astrum Technologies CC | 1 | 1 million | 28 Aug 2016 |
| Embedded IQ | 1 | 1 million | 13 Nov 2016 |
| Evercomm (Pty) Ltd | 1 | 1 million | 25 Jul 2025 |
| Lantern Engineering (Pty) Ltd | 1 | 1 million | 26 Jun 2021 |
| nerospec | 1 | 1 million | 7 Apr 2022 |
| Peralex Electronics (Pty) Ltd | 1 | 1 million | 5 Jan 2023 |
| Yekani Manufacturing PTY Ltd | 1 | 1 million | 11 Dec 2018 |
| Figment Design Laboratories | 3 | 12.3 thousand | 1 Mar 2009 |
| TruTeq Wireless (Pty) Ltd | 3 | 12.3 thousand | 30 Jul 2008 |
| CCII Systems (Pty) Ltd | 2 | 8.2 thousand | 26 Oct 2008 |
| LHA Systems (Pty) Ltd | 2 | 8.2 thousand | 24 Apr 2016 |
| 5nines | 1 | 4.1 thousand | 11 Oct 2015 |
| Advanced technologies & Engineering (pty) Ltd | 1 | 4.1 thousand | 30 Jul 2008 |
| Agrico | 1 | 4.1 thousand | 29 Mar 2024 |
| B. R. Electronics | 1 | 4.1 thousand | 30 Jul 2008 |
| Booyco Electronics | 1 | 4.1 thousand | 9 Sep 2012 |
| Cygnetic Technologies (Pty) Ltd | 1 | 4.1 thousand | 13 May 2018 |
| CYNAPS | 1 | 4.1 thousand | 30 Jul 2008 |
| DCOM Network Technology (Pty) Ltd | 1 | 4.1 thousand | 30 Jul 2008 |
| DetNet South Africa PTY (LTD) | 1 | 4.1 thousand | 15 Mar 2009 |
| Divigraph (Pty) LTD | 1 | 4.1 thousand | 19 Nov 2017 |
| DTRON Communications (Pty) Ltd | 1 | 4.1 thousand | 2 Apr 2017 |
| Electronic Systems Development | 1 | 4.1 thousand | 30 Jul 2008 |
| Elko Systems | 1 | 4.1 thousand | 30 Aug 2009 |
| EMS Industries | 1 | 4.1 thousand | 22 Feb 2009 |
| ExSens Technology (Pty) Ltd. | 1 | 4.1 thousand | 30 Apr 2017 |
| Far South Networks (Pty) Ltd | 1 | 4.1 thousand | 8 Oct 2008 |
| iCE-Intelligent Controlled Environments | 1 | 4.1 thousand | 12 Jun 2024 |
| ISS International | 1 | 4.1 thousand | 30 Jul 2008 |
| Lattech Systems Pty Ltd | 1 | 4.1 thousand | 22 Aug 2016 |
| LHA Systems CC | 1 | 4.1 thousand | 25 Jan 2009 |
| Netfort Solutions | 1 | 4.1 thousand | 22 Aug 2016 |
| North Bridge Technologies | 1 | 4.1 thousand | 11 Oct 2009 |
| RIOT | 1 | 4.1 thousand | 7 May 2017 |
| Seartech | 1 | 4.1 thousand | 24 Apr 2011 |
| Sedna | 1 | 4.1 thousand | 22 May 2026 |
| Specialist Mechanical Engineers (PTY)LTD | 1 | 4.1 thousand | 30 Oct 2022 |
| SS Telecoms CC | 1 | 4.1 thousand | 30 Jul 2008 |
| Stone Three | 1 | 4.1 thousand | 5 Nov 2017 |
| Surion (Pty) Ltd | 1 | 4.1 thousand | 4 Mar 2020 |
| Swiftnet SOC Ltd | 1 | 4.1 thousand | 7 Jun 2015 |
| TruTeq Devices (Pty) Ltd | 1 | 4.1 thousand | 15 Nov 2015 |
| UMAN | 1 | 4.1 thousand | 4 Feb 2018 |
| UVIRCO Technologies | 1 | 4.1 thousand | 10 May 2024 |
| VASTech | 1 | 4.1 thousand | 30 Jul 2008 |
| Visiosoft Pty Ltd | 1 | 4.1 thousand | 24 Aug 2024 |
| Xavant | 1 | 4.1 thousand | 9 Jul 2019 |
| Ya Batho Trading (Pty) Ltd | 1 | 4.1 thousand | 22 Jul 2018 |
Every organization with blocks registered in South Africa, sorted by total address space.