| Prefix | Block | Addresses | Country | First registered |
|---|---|---|---|---|
| 18:C3:E4:7 | MA-M | 1 million | BR | 20 Feb 2026 |
| 00:50:C2:AA:B | IAB | 4.1 thousand | BR | 3 May 2009 |
| 40:D8:55:06:B | IAB | 4.1 thousand | BR | 16 Dec 2012 |
| 70:B3:D5:1F:D | MA-S | 4.1 thousand | BR | 27 Mar 2016 |
| 70:B3:D5:35:6 | MA-S | 4.1 thousand | BR | 1 Jun 2019 |
| 70:B3:D5:3C:D | MA-S | 4.1 thousand | BR | 6 Jun 2020 |
| 70:B3:D5:55:E | MA-S | 4.1 thousand | BR | 16 Apr 2017 |
| 70:B3:D5:D9:7 | MA-S | 4.1 thousand | BR | 28 Sep 2014 |
| 70:B3:D5:F1:6 | MA-S | 4.1 thousand | BR | 8 Jul 2018 |
| 8C:1F:64:2C:8 | MA-S | 4.1 thousand | BR | 6 Jun 2021 |
| 8C:1F:64:34:0 | MA-S | 4.1 thousand | BR | 29 Aug 2024 |
| 8C:1F:64:3D:B | MA-S | 4.1 thousand | BR | 13 Mar 2025 |
| 8C:1F:64:94:4 | MA-S | 4.1 thousand | BR | 17 Sep 2025 |
| 8C:1F:64:C2:9 | MA-S | 4.1 thousand | BR | 19 Aug 2023 |
| 8C:1F:64:CA:F | MA-S | 4.1 thousand | BR | 14 May 2022 |
| 8C:1F:64:D7:3 | MA-S | 4.1 thousand | BR | 29 Dec 2022 |
| 8C:1F:64:E4:7 | MA-S | 4.1 thousand | BR | 15 Feb 2024 |
Every block registered to BRS Sistemas Eletrônicos in the IEEE registries, complete. Free-text search also matches former owners.