| Date | IP Address |
| 2021-01-19 | 172.232.21.8 (ClassC) |
| 2021-03-01 | 23.198.6.13 (ClassC) |
| 2021-11-13 | 23.52.42.184 (ClassC) |
| 2021-12-16 | 23.48.210.104 (ClassC) |
| 2022-05-12 | 23.42.158.202 (ClassC) |
| 2022-05-20 | 23.33.22.17 (ClassC) |
| 2022-10-27 | 184.26.95.50 (ClassC) |
| 2023-03-08 | 23.195.73.24 (ClassC) |
| 2023-03-08 | 23.195.73.42 (ClassC) |
| 2023-07-26 | 23.200.156.18 (ClassC) |
| 2023-11-28 | 23.45.46.17 (ClassC) |
| 2024-02-04 | 23.220.163.24 (ClassC) |
| 2024-02-25 | 23.56.168.49 (ClassC) |
| 2024-03-10 | 104.96.163.209 (ClassC) |
| 2024-08-30 | 23.192.230.85 (ClassC) |
| 2024-11-12 | 23.203.134.241 (ClassC) |
| 2025-04-05 | 23.55.111.170 (ClassC) |
| 2025-04-21 | 23.41.4.69 (ClassC) |
| 2025-10-24 | 23.41.4.84 (ClassC) |
| 2026-02-07 | 23.41.4.91 (ClassC) |
| Date | Domain | IP |
| service.dhbk.co.jp | 2025-03-23 | 23.202.47.33 |
| auth.dhbk.co.jp | 2024-03-10 | 104.96.163.209 |
| test-auth.dhbk.co.jp | 2024-11-08 | 23.203.134.235 |
| dev-auth.dhbk.co.jp | 2024-08-20 | 23.192.230.86 |
| kfscl.dhbk.co.jp | 2025-12-18 | 20.44.142.139 |
| www.dhbk.co.jp | 2023-11-01 | 52.196.9.92 |