| Prefix | Block | Addresses | Country | First registered |
|---|---|---|---|---|
| 00:50:C2:8D:4 | IAB | 4.1 thousand | ES | 30 Jul 2008 |
| 00:50:C2:DE:0 | IAB | 4.1 thousand | ES | 6 Mar 2011 |
| 40:D8:55:07:6 | IAB | 4.1 thousand | ES | 30 Dec 2012 |
| 70:B3:D5:0F:F | MA-S | 4.1 thousand | ES | 29 Jun 2014 |
| 70:B3:D5:27:5 | MA-S | 4.1 thousand | ES | 23 Jan 2019 |
| 70:B3:D5:B0:B | MA-S | 4.1 thousand | ES | 18 Mar 2018 |
| 70:B3:D5:B5:8 | MA-S | 4.1 thousand | ES | 30 Mar 2019 |
| 70:B3:D5:B9:3 | MA-S | 4.1 thousand | ES | 21 Feb 2016 |
| 8C:1F:64:06:E | MA-S | 4.1 thousand | ES | 15 Jan 2026 |
| 8C:1F:64:71:5 | MA-S | 4.1 thousand | ES | 30 Apr 2024 |
Every block registered to INTERNET PROTOCOLO LOGICA SL in the IEEE registries, complete. Free-text search also matches former owners.