| Prefix | Block | Addresses | Country | First registered |
|---|---|---|---|---|
| 40:D8:55:1A:1 | IAB | 4.1 thousand | US | 3 Nov 2013 |
| 70:B3:D5:62:6 | MA-S | 4.1 thousand | IT | 27 Jun 2020 |
| 70:B3:D5:8C:8 | MA-S | 4.1 thousand | IT | 22 Oct 2017 |
| 70:B3:D5:D5:6 | MA-S | 4.1 thousand | IT | 26 Mar 2019 |
| 70:B3:D5:FB:6 | MA-S | 4.1 thousand | IT | 6 Dec 2015 |
| 8C:1F:64:10:3 | MA-S | 4.1 thousand | IT | 18 Nov 2021 |
| 8C:1F:64:5F:9 | MA-S | 4.1 thousand | IT | 5 Dec 2024 |
| 8C:1F:64:CC:3 | MA-S | 4.1 thousand | IT | 10 Jun 2026 |
| 8C:1F:64:D3:4 | MA-S | 4.1 thousand | IT | 1 Aug 2023 |
Every block registered to KRONOTECH SRL in the IEEE registries, complete. Free-text search also matches former owners.