| Prefix | Block | Addresses | Country | First registered |
|---|---|---|---|---|
| 4C:AB:33 | MA-L | 16.8 million | KR | 29 Aug 2012 |
| 00:50:C2:E0:8 | IAB | 4.1 thousand | KR | 24 Apr 2011 |
| 00:50:C2:FF:8 | IAB | 4.1 thousand | KR | 9 Sep 2012 |
| 40:D8:55:18:6 | IAB | 4.1 thousand | KR | 6 Oct 2013 |
| 70:B3:D5:01:2 | MA-S | 4.1 thousand | KR | 14 Aug 2016 |
| 70:B3:D5:0A:B | MA-S | 4.1 thousand | KR | 29 Jun 2014 |
| 70:B3:D5:20:B | MA-S | 4.1 thousand | KR | 25 Feb 2021 |
| 70:B3:D5:35:1 | MA-S | 4.1 thousand | KR | 22 Oct 2017 |
| 70:B3:D5:3D:B | MA-S | 4.1 thousand | KR | 5 Oct 2014 |
| 70:B3:D5:7F:4 | MA-S | 4.1 thousand | KR | 6 Nov 2016 |
| 70:B3:D5:86:1 | MA-S | 4.1 thousand | KR | 26 Feb 2017 |
| 70:B3:D5:8A:5 | MA-S | 4.1 thousand | KR | 8 Apr 2018 |
| 70:B3:D5:8B:B | MA-S | 4.1 thousand | KR | 19 Aug 2018 |
| 70:B3:D5:C0:5 | MA-S | 4.1 thousand | KR | 20 May 2018 |
| 70:B3:D5:C8:D | MA-S | 4.1 thousand | KR | 26 Jan 2014 |
| 70:B3:D5:CB:3 | MA-S | 4.1 thousand | KR | 4 Jun 2017 |
| 70:B3:D5:F7:B | MA-S | 4.1 thousand | KR | 29 Nov 2015 |
| 8C:1F:64:08:4 | MA-S | 4.1 thousand | KR | 10 Jun 2026 |
| 8C:1F:64:17:4 | MA-S | 4.1 thousand | KR | 3 Dec 2024 |
| 8C:1F:64:DD:7 | MA-S | 4.1 thousand | KR | 5 May 2022 |
| 8C:1F:64:F8:4 | MA-S | 4.1 thousand | KR | 23 Nov 2022 |
Every block registered to KST technology in the IEEE registries, complete. Free-text search also matches former owners.