| Organization | Blocks | Addresses | First registered |
|---|---|---|---|
| Nokia Corporation | 88 | 1.5 billion | 21 Nov 2009 |
| HMD Global Oy | 31 | 520 million | 23 Nov 2016 |
| Microsoft Corporation | 18 | 302 million | 24 May 2014 |
| Microsoft Mobile Oy | 11 | 185 million | 14 Apr 2015 |
| Polar Electro Oy | 3 | 50.3 million | 19 Jul 2008 |
| Bluegiga Technologies OY | 2 | 33.6 million | 24 Oct 2001 |
| Ouman Oy | 2 | 17.8 million | 19 Jul 2008 |
| Epec Oy | 4 | 16.8 million | 30 Jul 2008 |
| 9Solutions Oy | 2 | 16.8 million | 25 Apr 2010 |
| Bittium Wireless Ltd | 2 | 16.8 million | 8 Oct 2008 |
| EKE-Electronics Ltd. | 2 | 16.8 million | 18 Jun 2008 |
| Mitron OY | 2 | 16.8 million | 30 Jul 2008 |
| PaloDEx Group Oy | 2 | 16.8 million | 9 Dec 2005 |
| Vacon Plc | 2 | 16.8 million | 18 Jun 2008 |
| Vansco Electronics Oy | 2 | 16.8 million | 27 Jan 2006 |
| Wapice Ltd. | 2 | 16.8 million | 25 Apr 2010 |
| A-Link Ltd | 1 | 16.8 million | 5 Dec 2006 |
| A4SP Technologies Ltd. | 1 | 16.8 million | 18 Jun 2008 |
| Aava Mobile Oy | 1 | 16.8 million | 5 Nov 2009 |
| ABB Oy | 1 | 16.8 million | 12 Dec 2002 |
| ABB Oy / Medium Voltage Products | 1 | 16.8 million | 18 Jun 2008 |
| ABB Oy Drives | 1 | 16.8 million | 8 Apr 2007 |
| AC Electric Vehicles, Ltd. | 1 | 16.8 million | 2 Mar 2003 |
| Aidon Oy | 1 | 16.8 million | 21 Jan 2015 |
| Ailocom Oy | 1 | 16.8 million | 5 Mar 2003 |
| ALT Systems Ltd | 1 | 16.8 million | 9 Oct 2009 |
| Anvia TV Oy | 1 | 16.8 million | 10 Dec 2010 |
| Aplicom Oy | 1 | 16.8 million | 17 Sep 2009 |
| Ball-It Oy | 1 | 16.8 million | 8 Oct 2008 |
| Beamex Oy Ab | 1 | 16.8 million | 16 Dec 2010 |
| Computec Oy | 1 | 16.8 million | 26 Jan 2007 |
| Control Express Finland Oy | 1 | 16.8 million | 9 Feb 2008 |
| ControlThings Oy Ab | 1 | 16.8 million | 20 Jan 2013 |
| Convergens Oy Ltd | 1 | 16.8 million | 16 Oct 2006 |
| Creowave Oy | 1 | 16.8 million | 28 Oct 2010 |
| DATEX DIVISION OF | 1 | 16.8 million | 8 Sep 2000 |
| Dedicated Network Partners Oy | 1 | 16.8 million | 29 Nov 2012 |
| Design Combus Ltd | 1 | 16.8 million | 8 Apr 2003 |
| Digita | 1 | 16.8 million | 29 Jul 2017 |
| Distance Technologies Ltd | 1 | 16.8 million | 31 Jan 2026 |
| Efore Oyj (Plc) | 1 | 16.8 million | 26 Oct 2004 |
| Ekahau, Inc. | 1 | 16.8 million | 13 Jun 2006 |
| Elcard Wireless Systems Oy | 1 | 16.8 million | 8 Sep 2000 |
| Elisa Oyj | 1 | 16.8 million | 24 Nov 2005 |
| Embedtronics Oy | 1 | 16.8 million | 13 Apr 2003 |
| Emfit Ltd | 1 | 16.8 million | 13 May 2007 |
| Enermet | 1 | 16.8 million | 8 Apr 2006 |
| Enerpoint Ltd. | 1 | 16.8 million | 5 Jun 2002 |
| Environics Oy | 1 | 16.8 million | 3 Nov 2010 |
| Espotel Oy | 1 | 16.8 million | 3 Nov 2011 |
| Exéns Development Oy | 1 | 16.8 million | 25 Sep 2007 |
| F-Secure Corporation | 1 | 16.8 million | 22 Dec 2015 |
| Fastrax Ltd | 1 | 16.8 million | 4 Aug 2004 |
| Fidelix Oy | 1 | 16.8 million | 2 Aug 2012 |
| Finlux Ltd | 1 | 16.8 million | 13 Apr 2003 |
| Franke Finland Oy | 1 | 16.8 million | 14 Oct 2002 |
| GE Healthcare | 1 | 16.8 million | 5 Apr 2018 |
| Genelec | 1 | 16.8 million | 24 Mar 2011 |
| Genera Oy | 1 | 16.8 million | 8 Apr 2003 |
| Global ES | 1 | 16.8 million | 1 May 2010 |
| Goodmill Systems Ltd | 1 | 16.8 million | 9 Feb 2008 |
| Honewell Oy | 1 | 16.8 million | 8 Sep 2000 |
| ICL DATA OY | 1 | 16.8 million | 25 Sep 1998 |
| Idesco Oy | 1 | 16.8 million | 6 Apr 2024 |
| IMATRAN VOIMA OY | 1 | 16.8 million | 8 Sep 2000 |
| Indagon Oy | 1 | 16.8 million | 21 Dec 2003 |
| Innokas Group | 1 | 16.8 million | 27 Feb 2013 |
| Innotrac Diagnostics Oy | 1 | 16.8 million | 23 Oct 2002 |
| ionSign Oy | 1 | 16.8 million | 21 Dec 2003 |
| Jollyboys Ltd | 1 | 16.8 million | 29 Oct 2013 |
| K-Patents Oy | 1 | 16.8 million | 1 Jun 2003 |
| KATIM L.L.C | 1 | 16.8 million | 24 Apr 2020 |
| Kempower Oyj | 1 | 16.8 million | 7 Dec 2022 |
| Kemppi Oy | 1 | 16.8 million | 24 Apr 2012 |
| KitWorks.fi Ltd. | 1 | 16.8 million | 29 Nov 2006 |
| Kone OYj | 1 | 16.8 million | 1 May 2012 |
| Kyynel | 1 | 16.8 million | 11 Sep 2013 |
| Meshcom Technologies Inc. | 1 | 16.8 million | 6 Mar 2006 |
| Micro-Research Finland Oy | 1 | 16.8 million | 21 Dec 2003 |
| Mirka Ltd. | 1 | 16.8 million | 11 Mar 2021 |
| Mobile Safe Track Ltd | 1 | 16.8 million | 9 Feb 2008 |
| Movesense Ltd | 1 | 16.8 million | 12 May 2023 |
| Multi Touch Oy | 1 | 16.8 million | 28 Oct 2011 |
| NANOMATIC OY | 1 | 16.8 million | 22 Apr 1998 |
| NAVIELEKTRO KY | 1 | 16.8 million | 9 Apr 2013 |
| Necsom, Ltd. | 1 | 16.8 million | 8 Sep 2000 |
| Netcontrol Oy | 1 | 16.8 million | 29 Mar 2002 |
| Noccela Oy | 1 | 16.8 million | 12 Jan 2017 |
| Nome Oy | 1 | 16.8 million | 15 Nov 2011 |
| Nordic ID Oy | 1 | 16.8 million | 18 Jun 2008 |
| Obelux Oy | 1 | 16.8 million | 1 Oct 2011 |
| Orbis Systems Oy | 1 | 16.8 million | 22 May 2012 |
| Orion Diagnostica Oy | 1 | 16.8 million | 10 Apr 2010 |
| OURA Health Oy | 1 | 16.8 million | 29 Nov 2017 |
| OY COMSEL SYSTEM AB | 1 | 16.8 million | 8 Sep 2000 |
| Oy Everon Ab | 1 | 16.8 million | 6 Jul 2018 |
| Oy Finnish Electric Vehicle Technologies Ltd | 1 | 16.8 million | 3 Mar 2010 |
| Patria Ailon | 1 | 16.8 million | 24 Jan 2001 |
| PKC Electronics Oy | 1 | 16.8 million | 16 Sep 2005 |
| Planmeca Oy | 1 | 16.8 million | 30 Jan 2002 |
| PulseOn Oy | 1 | 16.8 million | 18 Oct 2013 |
| Radionet Ltd. | 1 | 16.8 million | 24 Oct 2001 |
| SATEL OY | 1 | 16.8 million | 18 Jun 2008 |
| Schneider Electric Fire & Security Oy | 1 | 16.8 million | 17 May 2017 |
| SecWell Networks Oy | 1 | 16.8 million | 29 Mar 2002 |
| SSH Communications Security Corp. | 1 | 16.8 million | 24 Oct 2001 |
| Stonesoft Corporation | 1 | 16.8 million | 20 Apr 2013 |
| Sulzer Pump Solutions Finland Oy | 1 | 16.8 million | 14 Mar 2013 |
| Suunto Oy | 1 | 16.8 million | 26 Sep 2012 |
| T:mi Ytti | 1 | 16.8 million | 14 May 2013 |
| Tamtron Oy | 1 | 16.8 million | 20 Dec 2011 |
| TECNOMEN OY | 1 | 16.8 million | 22 Apr 1998 |
| Teleste Corporation | 1 | 16.8 million | 8 Sep 2000 |
| TeleWell Oy | 1 | 16.8 million | 20 Nov 2007 |
| There Corporation Oy | 1 | 16.8 million | 14 Jan 2010 |
| TJK Tietolaite Oy | 1 | 16.8 million | 27 Sep 2011 |
| Tosibox Oy | 1 | 16.8 million | 26 Apr 2013 |
| Treon Oy | 1 | 16.8 million | 15 Dec 2025 |
| Twig Com Ltd. | 1 | 16.8 million | 10 Jan 2006 |
| UNIGRAF OY | 1 | 16.8 million | 22 Apr 1998 |
| Uniqoteq Ltd. | 1 | 16.8 million | 2 Mar 2012 |
| Unmonday Ltd | 1 | 16.8 million | 10 Oct 2013 |
| Upponetti Oy | 1 | 16.8 million | 4 Jun 2001 |
| Uros Oy | 1 | 16.8 million | 14 Feb 2012 |
| Vallox Oy | 1 | 16.8 million | 21 Dec 2013 |
| Valmet Automation | 1 | 16.8 million | 22 Apr 1998 |
| Vamp Ltd. | 1 | 16.8 million | 30 Dec 2006 |
| VDSL Systems OY | 1 | 16.8 million | 8 Sep 2000 |
| Vinci Labs Oy | 1 | 16.8 million | 6 Mar 2006 |
| Vivago Oy | 1 | 16.8 million | 18 Jun 2013 |
| Wartsila Finland Oy | 1 | 16.8 million | 1 Aug 2012 |
| Wirepas Oy | 1 | 16.8 million | 12 Jan 2018 |
| XORTEC OY | 1 | 16.8 million | 18 Aug 2007 |
| Yota Devices OY | 1 | 16.8 million | 24 May 2013 |
| Vaisala Oyj | 4 | 1.1 million | 30 Jul 2008 |
| Flexim Security Oy | 3 | 1.1 million | 30 Sep 2012 |
| Evondos Oy | 2 | 1.1 million | 30 Aug 2015 |
| iLOQ Oy | 2 | 1.1 million | 15 Feb 2015 |
| Nuviz Oy | 2 | 1.1 million | 10 Apr 2016 |
| Oliotalo Oy | 2 | 1.1 million | 30 Jul 2008 |
| Aina Wireless Inc | 1 | 1 million | 29 Nov 2015 |
| Airbus Defence and Space Oy | 1 | 1 million | 16 Oct 2015 |
| Airfi Oy AB | 1 | 1 million | 21 Mar 2019 |
| Ampner Ltd | 1 | 1 million | 9 Apr 2021 |
| Arcteq Relays Ltd. | 1 | 1 million | 1 Feb 2025 |
| Bithouse Oy | 1 | 1 million | 18 Apr 2021 |
| Comsel System Ltd | 1 | 1 million | 16 Oct 2015 |
| Corelase Oy | 1 | 1 million | 4 Jun 2025 |
| Creanord | 1 | 1 million | 6 Nov 2016 |
| Enedo Finland Oy | 1 | 1 million | 25 Jun 2020 |
| Everynet Oy | 1 | 1 million | 21 Feb 2019 |
| Exafore Oy | 1 | 1 million | 25 Mar 2018 |
| Exertus Oy | 1 | 1 million | 11 Feb 2018 |
| FLS FINLAND OY | 1 | 1 million | 18 Dec 2016 |
| Haltian Products Oy | 1 | 1 million | 14 Feb 2019 |
| Happo Solutions Oy | 1 | 1 million | 16 Oct 2015 |
| Konecranes | 1 | 1 million | 29 Nov 2015 |
| Loupedeck Oy | 1 | 1 million | 26 Aug 2020 |
| Missing-Link Oy | 1 | 1 million | 2 Nov 2021 |
| Navigil Ltd | 1 | 1 million | 6 May 2021 |
| Polarteknik Oy | 1 | 1 million | 28 Aug 2016 |
| Popit Oy | 1 | 1 million | 14 Jan 2018 |
| Quuppa Oy | 1 | 1 million | 19 Nov 2017 |
| Reonel Oy | 1 | 1 million | 6 May 2025 |
| Rollock Oy | 1 | 1 million | 21 Mar 2019 |
| Savox Communications | 1 | 1 million | 8 Jan 2017 |
| SKS Automaatio oy | 1 | 1 million | 29 Jan 2017 |
| SKS Control Oy | 1 | 1 million | 6 Aug 2017 |
| Sunit Oy | 1 | 1 million | 25 Apr 2019 |
| Technion Oy | 1 | 1 million | 16 Oct 2015 |
| Teknoware Oy | 1 | 1 million | 8 Apr 2018 |
| UTU Oy | 1 | 1 million | 16 Oct 2015 |
| Varaani Works Oy | 1 | 1 million | 16 Oct 2015 |
| Varex Imaging Finland | 1 | 1 million | 28 Aug 2025 |
| Varjo Technologies Oy | 1 | 1 million | 4 Jun 2024 |
| Wartsila Voyage Oy | 9 | 36.9 thousand | 30 Jul 2008 |
| Mecsel Oy | 3 | 12.3 thousand | 30 Jul 2008 |
| MeshWorks Wireless Oy | 3 | 12.3 thousand | 31 May 2009 |
| RF-Tuote Oy | 3 | 12.3 thousand | 2 Nov 2014 |
| Ajeco Oy | 2 | 8.2 thousand | 30 Jul 2008 |
| DA-Design Oy | 2 | 8.2 thousand | 30 Jul 2008 |
| Stresstech OY | 2 | 8.2 thousand | 30 Jul 2008 |
| ABB | 1 | 4.1 thousand | 30 Jul 2008 |
| Aesir Copenhagen | 1 | 4.1 thousand | 7 Aug 2011 |
| Arctic Instruments Oy | 1 | 4.1 thousand | 4 May 2026 |
| Artome Oy | 1 | 4.1 thousand | 13 Feb 2024 |
| AUDICO SYSTEMS OY | 1 | 4.1 thousand | 30 Jul 2008 |
| Audio Riders Oy | 1 | 4.1 thousand | 30 Jul 2008 |
| Automaatiotekniikka Seppo Saari Oy | 1 | 4.1 thousand | 30 Jul 2008 |
| Bittitalo Oy | 1 | 4.1 thousand | 30 Jul 2008 |
| Caproc Oy | 1 | 4.1 thousand | 10 Jun 2021 |
| Clausal Computing Oy | 1 | 4.1 thousand | 14 Jan 2023 |
| Coheros Oy | 1 | 4.1 thousand | 29 Apr 2018 |
| Detection Technology Inc. | 1 | 4.1 thousand | 30 Jul 2008 |
| Dynim Oy | 1 | 4.1 thousand | 4 Mar 2021 |
| Elcoteq Design Center Oy | 1 | 4.1 thousand | 16 Aug 2009 |
| Ellego Powertec Oy | 1 | 4.1 thousand | 22 Sep 2019 |
| Endeas Oy | 1 | 4.1 thousand | 26 Apr 2009 |
| Enkora Oy Ltd | 1 | 4.1 thousand | 31 Mar 2013 |
| Exertus | 1 | 4.1 thousand | 30 Jul 2008 |
| Flander Oy | 1 | 4.1 thousand | 30 Jul 2008 |
| Icraft Oy | 1 | 4.1 thousand | 7 Apr 2013 |
| Image Soft Oy | 1 | 4.1 thousand | 3 Sep 2025 |
| Ixonos Plc | 1 | 4.1 thousand | 16 Oct 2011 |
| JE Suunnittelu Oy | 1 | 4.1 thousand | 31 Mar 2013 |
| Kumera Drives Oy | 1 | 4.1 thousand | 2 Nov 2008 |
| KxS Technologies Oy | 1 | 4.1 thousand | 12 Oct 2021 |
| LINET OY | 1 | 4.1 thousand | 30 Jul 2008 |
| LM-Instruments Oy | 1 | 4.1 thousand | 19 Feb 2020 |
| Lumine Lighting Solutions Oy | 1 | 4.1 thousand | 16 Nov 2014 |
| Marioff Corporation Oy | 1 | 4.1 thousand | 18 Dec 2016 |
| Mega Electronics Ltd | 1 | 4.1 thousand | 22 Dec 2013 |
| Megaflex Oy | 1 | 4.1 thousand | 18 Sep 2016 |
| Merus Power Dynamics Ltd. | 1 | 4.1 thousand | 18 Dec 2016 |
| MGM-Devices Oy | 1 | 4.1 thousand | 8 Oct 2008 |
| Muuntosähkö Oy - Trafox | 1 | 4.1 thousand | 27 Sep 2015 |
| Navicron Oy | 1 | 4.1 thousand | 29 Mar 2009 |
| Nokeval Oy | 1 | 4.1 thousand | 29 Mar 2022 |
| Noptel Oy | 1 | 4.1 thousand | 24 Sep 2022 |
| Numcore Ltd | 1 | 4.1 thousand | 6 Sep 2009 |
| Orbis Oy | 1 | 4.1 thousand | 30 Jul 2008 |
| Oy Stinghorn Ltd | 1 | 4.1 thousand | 30 Jul 2008 |
| Patria Advanced Solutions | 1 | 4.1 thousand | 30 Jul 2008 |
| Patria Aviation Oy | 1 | 4.1 thousand | 3 Nov 2013 |
| Planea Oy | 1 | 4.1 thousand | 30 Jul 2008 |
| QES | 1 | 4.1 thousand | 30 Jul 2008 |
| Rapiot | 1 | 4.1 thousand | 15 Jan 2021 |
| Richie Ltd | 1 | 4.1 thousand | 20 May 2025 |
| Saarni Cloud Oy | 1 | 4.1 thousand | 29 May 2024 |
| Sarokal Test Systems Oy | 1 | 4.1 thousand | 15 Feb 2015 |
| ScopeSensor Oy | 1 | 4.1 thousand | 21 Jun 2015 |
| Sensapex Oy | 1 | 4.1 thousand | 6 Dec 2015 |
| Small Data Garden Oy | 1 | 4.1 thousand | 3 Aug 2019 |
| Soredex Instrumentarium Oyj | 1 | 4.1 thousand | 30 Jul 2008 |
| SPECIM, Spectral Imaging Oy Ltd | 1 | 4.1 thousand | 15 Aug 2026 |
| StreamPlay Oy Ltd | 1 | 4.1 thousand | 20 Mar 2016 |
| Sulaon Oy | 1 | 4.1 thousand | 31 Mar 2013 |
| Symbicon Ltd | 1 | 4.1 thousand | 14 Dec 2014 |
| Taitotekniikka | 1 | 4.1 thousand | 30 Mar 2014 |
| Tammermatic Group Oy | 1 | 4.1 thousand | 2 Dec 2012 |
| Tampere University of Technology | 1 | 4.1 thousand | 26 Apr 2009 |
| Telemerkki Oy | 1 | 4.1 thousand | 10 Nov 2010 |
| Timegate Instruments Ltd. | 1 | 4.1 thousand | 13 Feb 2022 |
| Tumsan | 1 | 4.1 thousand | 30 Jul 2008 |
| Turun Turvatekniikka Oy | 1 | 4.1 thousand | 30 Jul 2008 |
| Varma Electronics Oy | 1 | 4.1 thousand | 30 Jul 2008 |
Every organization with blocks registered in Finland, sorted by total address space.