| Date | IP Address |
| 2022-02-06 | 18.184.247.126 (ClassC) |
| 2023-10-13 | 18.158.172.115 (ClassC) |
| 2024-06-11 | 52.57.163.73 (ClassC) |
| 2024-10-28 | 18.185.231.128 (ClassC) |
| 2025-01-21 | 52.58.130.243 (ClassC) |
| 2025-04-30 | 18.193.155.75 (ClassC) |
| 2025-06-07 | 3.64.207.193 (ClassC) |
| 2025-08-13 | 3.123.190.55 (ClassC) |
| 2025-09-09 | 18.195.42.223 (ClassC) |
| 2026-02-21 | 18.196.21.234 (ClassC) |
| Date | Domain | IP |
| bc.checks.haufe.de | 2024-10-02 | 18.185.129.254 |
| kc.checks.haufe.de | 2023-10-13 | 18.158.172.115 |