| Date | IP Address |
| 2023-07-18 | 85.13.128.233 (ClassC) |
| 2025-12-01 | 85.13.161.223 (ClassC) |
| Date | Domain | IP |
| mail12.collinblume.de | 2025-10-31 | 85.13.161.223 |
| mail3.collinblume.de | 2025-10-30 | 85.13.161.223 |
| mailgate.collinblume.de | 2025-11-25 | 85.13.161.223 |
| antispam.collinblume.de | 2025-11-04 | 85.13.161.223 |
| authsmtp.collinblume.de | 2025-10-30 | 85.13.161.223 |
| mailer.collinblume.de | 2025-10-30 | 85.13.161.223 |
| a.mx.collinblume.de | 2025-10-30 | 85.13.161.223 |