| Prefix | Block | Addresses | Country | First registered |
|---|---|---|---|---|
| 00:50:C2:72:3 | IAB | 4.1 thousand | ES | 30 Jul 2008 |
| 40:D8:55:10:2 | IAB | 4.1 thousand | ES | 26 May 2013 |
| 70:B3:D5:14:8 | MA-S | 4.1 thousand | ES | 29 Nov 2015 |
| 70:B3:D5:2A:9 | MA-S | 4.1 thousand | ES | 4 Feb 2018 |
| 70:B3:D5:43:1 | MA-S | 4.1 thousand | ES | 22 Feb 2015 |
| 70:B3:D5:4C:D | MA-S | 4.1 thousand | ES | 21 Sep 2014 |
| 70:B3:D5:56:E | MA-S | 4.1 thousand | ES | 11 Oct 2019 |
| 70:B3:D5:63:2 | MA-S | 4.1 thousand | ES | 22 Apr 2020 |
| 70:B3:D5:AB:2 | MA-S | 4.1 thousand | ES | 1 Dec 2018 |
| 70:B3:D5:B5:6 | MA-S | 4.1 thousand | ES | 12 Feb 2017 |
| 70:B3:D5:BD:B | MA-S | 4.1 thousand | ES | 1 Nov 2020 |
| 70:B3:D5:F4:F | MA-S | 4.1 thousand | ES | 17 Apr 2016 |
| 8C:1F:64:0D:8 | MA-S | 4.1 thousand | ES | 15 Feb 2023 |
| 8C:1F:64:11:B | MA-S | 4.1 thousand | ES | 17 Sep 2024 |
| 8C:1F:64:1C:A | MA-S | 4.1 thousand | ES | 14 Mar 2024 |
| 8C:1F:64:1D:E | MA-S | 4.1 thousand | ES | 1 Sep 2023 |
| 8C:1F:64:28:B | MA-S | 4.1 thousand | ES | 12 Apr 2025 |
| 8C:1F:64:29:A | MA-S | 4.1 thousand | ES | 8 Sep 2025 |
| 8C:1F:64:36:2 | MA-S | 4.1 thousand | ES | 6 May 2023 |
| 8C:1F:64:5E:1 | MA-S | 4.1 thousand | ES | 14 Dec 2024 |
| 8C:1F:64:60:2 | MA-S | 4.1 thousand | ES | 27 Apr 2026 |
| 8C:1F:64:77:3 | MA-S | 4.1 thousand | ES | 13 Jan 2026 |
| 8C:1F:64:82:C | MA-S | 4.1 thousand | ES | 25 Dec 2024 |
| 8C:1F:64:96:4 | MA-S | 4.1 thousand | ES | 7 Sep 2023 |
| 8C:1F:64:A1:9 | MA-S | 4.1 thousand | ES | 23 Sep 2026 |
| 8C:1F:64:AF:8 | MA-S | 4.1 thousand | ES | 10 Nov 2023 |
| 8C:1F:64:B7:8 | MA-S | 4.1 thousand | ES | 31 Aug 2026 |
| 8C:1F:64:B9:E | MA-S | 4.1 thousand | ES | 27 Jul 2022 |
| 8C:1F:64:C2:F | MA-S | 4.1 thousand | ES | 18 Apr 2021 |
| 8C:1F:64:C8:3 | MA-S | 4.1 thousand | ES | 23 Nov 2023 |
| 8C:1F:64:D0:8 | MA-S | 4.1 thousand | ES | 17 Mar 2022 |
| 8C:1F:64:DA:6 | MA-S | 4.1 thousand | ES | 29 Oct 2022 |
| 8C:1F:64:E8:0 | MA-S | 4.1 thousand | ES | 7 Jul 2023 |
| 8C:1F:64:EB:8 | MA-S | 4.1 thousand | ES | 21 Oct 2025 |
| 8C:1F:64:FE:3 | MA-S | 4.1 thousand | ES | 9 Oct 2021 |
Every block registered to Power Electronics Espana, S.L. in the IEEE registries, complete. Free-text search also matches former owners.