| Date | IP Address |
| 2021-03-25 | 85.13.141.142 (ClassC) |
| 2025-01-04 | 85.13.161.29 (ClassC) |
| Date | Domain | IP |
| email.der-holzhacker.com | 2024-09-25 | 85.13.161.29 |
| antispam.der-holzhacker.com | 2024-09-25 | 85.13.161.29 |
| imap.der-holzhacker.com | 2024-09-25 | 85.13.161.29 |
| a.mx.der-holzhacker.com | 2025-01-04 | 85.13.161.29 |
| gateway.der-holzhacker.com | 2024-12-24 | 85.13.161.29 |