| Date | IP Address |
| 2025-01-21 | 35.186.218.146 (ClassC) |
| Date | Domain | IP |
| e.sej.co.jp | 2024-07-23 | 13.110.52.10 |
| semdsk.sej.co.jp | 2025-01-21 | 35.186.218.146 |
| ml.sej.co.jp | 2024-09-26 | 35.78.167.107 |
| cdn.sej.co.jp | 2024-08-09 | 146.75.41.194 |
| coupon.sej.co.jp | 2024-09-20 | 133.250.180.165 |
| app.sej.co.jp | 2024-12-28 | 45.60.12.81 |
| fc-owner.sej.co.jp | 2024-12-26 | 3.33.137.190 |
| semdsk-s1-a.itemtest.sej.co.jp | 2024-11-25 | 35.186.219.86 |
| semdsk-s1-b.itemtest.sej.co.jp | 2025-01-21 | 35.190.49.133 |
| www.sej.co.jp | 2025-01-20 | 45.60.12.81 |