| Date | IP Address |
| 2024-05-25 | 104.18.37.160 (ClassC) |
| 2025-09-28 | 104.18.33.50 (ClassC) |
| 2026-02-13 | 172.64.154.206 (ClassC) |
| Date | Domain | IP |
| api.doc.mail.freenet.de | 2025-10-30 | 54.147.156.34 |
| api.mail.freenet.de | 2024-03-21 | 104.18.39.171 |
| www.mail.freenet.de | 2024-05-25 | 104.18.37.160 |