| Prefix | Block | Addresses | Country | First registered |
|---|---|---|---|---|
| 00:00:48 | MA-L | 16.8 million | JP | 25 Sep 1998 |
| 00:26:AB | MA-L | 16.8 million | JP | 30 Jun 2009 |
| 38:1A:52 | MA-L | 16.8 million | JP | 30 Mar 2019 |
| 38:9D:92 | MA-L | 16.8 million | JP | 29 Jun 2017 |
| 44:D2:44 | MA-L | 16.8 million | JP | 17 Dec 2014 |
| 50:57:9C | MA-L | 16.8 million | JP | 8 Jun 2018 |
| 58:05:D9 | MA-L | 16.8 million | JP | 30 Jul 2024 |
| 64:C6:D2 | MA-L | 16.8 million | JP | 12 Oct 2022 |
| 64:EB:8C | MA-L | 16.8 million | JP | 26 Nov 2013 |
| 68:55:D4 | MA-L | 16.8 million | JP | 6 Jun 2023 |
| 9C:AE:D3 | MA-L | 16.8 million | JP | 19 Nov 2015 |
| A4:D7:3C | MA-L | 16.8 million | JP | 24 Mar 2021 |
| A4:EE:57 | MA-L | 16.8 million | JP | 26 Mar 2011 |
| AC:18:26 | MA-L | 16.8 million | JP | 13 Jan 2013 |
| B0:E8:92 | MA-L | 16.8 million | JP | 8 Mar 2012 |
| BC:C8:CC | MA-L | 16.8 million | JP | 2 Jul 2026 |
| D4:80:8B | MA-L | 16.8 million | JP | 18 Mar 2025 |
| DC:83:BF | MA-L | 16.8 million | JP | 24 Oct 2025 |
| DC:CD:2F | MA-L | 16.8 million | JP | 24 Jun 2020 |
| E0:BB:9E | MA-L | 16.8 million | JP | 23 Nov 2019 |
| F8:25:51 | MA-L | 16.8 million | JP | 17 Oct 2021 |
| F8:D0:27 | MA-L | 16.8 million | JP | 30 Aug 2016 |
Every block registered to Seiko Epson Corporation in the IEEE registries, complete. Free-text search also matches former owners.