| Date | IP Address |
| 2024-11-25 | 18.158.29.156 (ClassC) |
| 2025-05-13 | 18.194.195.91 (ClassC) |
| 2025-09-20 | 52.29.68.168 (ClassC) |
| 2026-01-23 | 63.178.56.161 (ClassC) |
| 2026-02-11 | 52.29.247.215 (ClassC) |
| Date | Domain | IP |
| api.haufe-lexware.com | 2023-08-09 | 3.123.175.142 |
| login.haufe-lexware.com | 2025-05-24 | 213.155.64.15 |
| hgg.login.haufe-lexware.com | 2026-01-26 | 213.155.64.15 |
| account.haufe-lexware.com | 2024-11-25 | 18.158.29.156 |
| www.haufe-lexware.com | 2026-01-29 | 217.31.86.166 |