| Date | IP Address |
| 2016-02-10 | 54.231.225.27 (ClassC) |
| 2016-02-11 | 54.231.228.16 (ClassC) |
| 2016-06-03 | 54.231.225.128 (ClassC) |
| 2021-06-10 | 52.219.17.75 (ClassC) |
| 2024-03-05 | 52.219.8.24 (ClassC) |
| 2024-12-03 | 52.219.1.92 (ClassC) |
| 2025-08-03 | 3.5.155.67 (ClassC) |
| Date | Domain | IP |
| fw01.hpk.co.jp | 2025-03-05 | 202.232.180.97 |
| www.hpk.co.jp | 2024-03-05 | 52.219.8.24 |