| Date | IP Address |
| 2021-05-07 | 52.219.17.7 (ClassC) |
| 2024-06-11 | 52.219.163.47 (ClassC) |
| 2024-12-21 | 52.219.199.83 (ClassC) |
| 2025-01-08 | 52.219.162.207 (ClassC) |
| Date | Domain | IP |
| update.kozo.co.jp | 2024-06-13 | 18.161.6.32 |
| 40th.kozo.co.jp | 2024-06-16 | 204.246.191.16 |
| help.kozo.co.jp | 2024-12-21 | 52.219.199.83 |
| group.kozo.co.jp | 2024-06-10 | 54.248.98.184 |
| support.kozo.co.jp | 2024-10-24 | 54.150.85.127 |
| www.kozo.co.jp | 2024-06-12 | 3.163.24.106 |