| Date | IP Address |
| 2013-11-04 | 83.169.31.99 (ClassC) |
| 2024-02-28 | 176.28.21.25 (ClassC) |
| 2025-01-21 | 92.205.190.71 (ClassC) |
| Date | Domain | IP |
| mail2.springer-net.de | 2024-10-28 | 92.205.190.71 |
| mta-sts.exch.springer-net.de | 2024-10-28 | 92.205.190.71 |
| webmail.springer-net.de | 2024-11-10 | 92.205.190.71 |
| smtp.springer-net.de | 2024-10-28 | 92.205.190.71 |
| www.springer-net.de | 2024-05-04 | 92.205.190.71 |
| relay.springer-net.de | 2024-10-28 | 92.205.190.71 |