| Date | IP Address |
| 2021-02-09 | 85.13.134.12 (ClassC) |
| 2025-10-02 | 85.13.161.234 (ClassC) |
| Date | Domain | IP |
| imap1.liersch.name | 2025-10-02 | 85.13.161.234 |
| mail02.liersch.name | 2025-06-01 | 85.13.161.234 |
| mail2.liersch.name | 2025-10-02 | 85.13.161.234 |
| imap2.liersch.name | 2025-10-01 | 85.13.161.234 |
| mail.liersch.name | 2025-06-14 | 85.13.161.234 |
| m.liersch.name | 2025-05-23 | 85.13.161.234 |
| authsmtp.liersch.name | 2025-10-02 | 85.13.161.234 |
| box.liersch.name | 2025-10-02 | 85.13.161.234 |