| Prefix | Block | Addresses | Country | First registered |
|---|---|---|---|---|
| 8C:1F:64:20:1 | MA-S | 4.1 thousand | TW | 12 Jul 2023 |
| 8C:1F:64:21:6 | MA-S | 4.1 thousand | TW | 3 Mar 2026 |
| 8C:1F:64:42:3 | MA-S | 4.1 thousand | TW | 4 Feb 2023 |
| 8C:1F:64:52:A | MA-S | 4.1 thousand | TW | 4 Mar 2023 |
| 8C:1F:64:79:F | MA-S | 4.1 thousand | TW | 6 May 2023 |
| 8C:1F:64:7F:A | MA-S | 4.1 thousand | TW | 7 Aug 2026 |
| 8C:1F:64:A3:E | MA-S | 4.1 thousand | TW | 26 Oct 2023 |
| 8C:1F:64:A7:4 | MA-S | 4.1 thousand | TW | 4 Nov 2025 |
Every block registered to Hiwin Mikrosystem Corp. in the IEEE registries, complete. Free-text search also matches former owners.