| Prefix | Block | Addresses | Country | First registered |
|---|---|---|---|---|
| 00:50:C2:CB:E | IAB | 4.1 thousand | US | 4 Jul 2010 |
| 70:B3:D5:27:1 | MA-S | 4.1 thousand | US | 19 Mar 2021 |
| 70:B3:D5:6D:0 | MA-S | 4.1 thousand | US | 30 Oct 2016 |
| 70:B3:D5:74:B | MA-S | 4.1 thousand | US | 2 Oct 2019 |
| 70:B3:D5:A8:D | MA-S | 4.1 thousand | US | 10 Jun 2018 |
| 70:B3:D5:C3:F | MA-S | 4.1 thousand | US | 2 Nov 2014 |
| 8C:1F:64:14:1 | MA-S | 4.1 thousand | US | 14 Nov 2023 |
| 8C:1F:64:8B:A | MA-S | 4.1 thousand | US | 28 Jul 2026 |
| 8C:1F:64:B5:F | MA-S | 4.1 thousand | US | 12 Feb 2025 |
Every block registered to Code Blue Corporation in the IEEE registries, complete. Free-text search also matches former owners.