| Date | IP Address |
| 2021-02-14 | 85.13.147.141 (ClassC) |
| 2026-02-06 | 85.13.133.99 (ClassC) |
| Date | Domain | IP |
| mx0.irws-service.de | 2025-10-30 | 85.13.133.99 |
| konradin1.irws-service.de | 2026-01-03 | 85.13.133.99 |
| relay2.irws-service.de | 2025-11-20 | 85.13.133.99 |
| mail9.irws-service.de | 2025-12-09 | 85.13.133.99 |
| mta.irws-service.de | 2025-10-16 | 85.13.133.99 |
| comune.irws-service.de | 2025-10-06 | 85.13.133.99 |
| mail.irws-service.de | 2025-10-05 | 85.13.133.99 |
| pop.irws-service.de | 2025-12-10 | 85.13.133.99 |
| ftp.irws-service.de | 2025-11-11 | 85.13.133.99 |
| postmaster.irws-service.de | 2026-02-06 | 85.13.133.99 |
| mailserver.irws-service.de | 2025-12-24 | 85.13.133.99 |
| ms.irws-service.de | 2025-10-19 | 85.13.133.99 |
| mxs.irws-service.de | 2025-10-29 | 85.13.133.99 |
| bk-offset.irws-service.de | 2025-11-21 | 85.13.133.99 |
| mailrelay.irws-service.de | 2025-10-04 | 85.13.133.99 |