| Prefix | Block | Addresses | Country | First registered |
|---|---|---|---|---|
| 00:50:C2:59:7 | IAB | 4.1 thousand | CA | 30 Jul 2008 |
| 40:D8:55:01:9 | IAB | 4.1 thousand | US | 14 Oct 2012 |
| 70:B3:D5:87:C | MA-S | 4.1 thousand | CA | 28 Jan 2018 |
| 70:B3:D5:EB:0 | MA-S | 4.1 thousand | CA | 2 Mar 2014 |
| 8C:1F:64:0F:A | MA-S | 4.1 thousand | CA | 7 Jun 2024 |
| 8C:1F:64:A3:2 | MA-S | 4.1 thousand | CA | 29 Oct 2021 |
| 8C:1F:64:E4:6 | MA-S | 4.1 thousand | CA | 24 Aug 2022 |
Every block registered to Nautel LTD in the IEEE registries, complete. Free-text search also matches former owners.