| Organization | Blocks | Addresses | First registered |
|---|---|---|---|
| FTA Communication Technologies | 1 | 16.8 million | 12 Feb 2004 |
| IEE S.A. | 1 | 16.8 million | 31 Jul 2009 |
| InCypher S.A. | 1 | 16.8 million | 3 Aug 2002 |
| Rolling Wireless S.a.r.l. Luxembourg | 1 | 16.8 million | 1 Apr 2023 |
| Skylane Optics | 1 | 16.8 million | 12 Apr 2009 |
| Advanced Logic Technology (ALT) sa | 1 | 1 million | 22 Oct 2017 |
| AZTEK SA | 1 | 4.1 thousand | 22 Mar 2024 |
| EmTroniX Sàrl | 1 | 4.1 thousand | 31 Jul 2026 |
| FR-Team International SA | 1 | 4.1 thousand | 4 Oct 2015 |
| L.I.F.E. Corporation SA | 1 | 4.1 thousand | 24 Jul 2016 |
| Risk Expert sarl | 1 | 4.1 thousand | 14 May 2017 |
| Vibrationmaster | 1 | 4.1 thousand | 10 Jun 2018 |
Every organization with blocks registered in Luxembourg, sorted by total address space.