| Date | IP Address |
| 2019-04-12 | 52.222.218.94 (ClassC) |
| 2020-05-10 | 13.225.205.115 (ClassC) |
| 2024-09-09 | 3.163.24.22 (ClassC) |
| 2024-11-10 | 3.163.24.98 (ClassC) |
| 2024-11-21 | 3.163.24.21 (ClassC) |
| 2026-02-06 | 3.169.173.60 (ClassC) |
| 2026-03-01 | 3.169.173.90 (ClassC) |
| Date | Domain | IP |
| www.pdc.or.jp | 2024-10-18 | 3.165.160.117 |