| Date | IP Address |
| 2025-03-06 | 172.67.143.206 (ClassC) |
| 2025-05-04 | 79.218.158.155 (ClassC) |
| 2025-05-12 | 87.154.11.9 (ClassC) |
| 2025-09-20 | 87.154.3.99 (ClassC) |
| 2025-11-25 | 217.235.5.53 (ClassC) |
| Date | Domain | IP |
| autoconfig.os2wg.de | 2025-03-05 | 104.21.27.248 |
| mail.os2wg.de | 2025-02-27 | 172.67.143.206 |
| webmail.os2wg.de | 2025-03-05 | 104.21.27.248 |
| imap.os2wg.de | 2025-03-05 | 104.21.27.248 |
| pop.os2wg.de | 2025-03-06 | 172.67.143.206 |
| smtp.os2wg.de | 2025-03-05 | 104.21.27.248 |
| autodiscover.os2wg.de | 2025-02-26 | 172.67.143.206 |
| mta-sts.os2wg.de | 2025-03-06 | 172.67.143.206 |
| www.os2wg.de | 2025-03-06 | 172.67.143.206 |