| Date | IP Address |
| 2021-03-12 | 5.134.4.125 (ClassC) |
| 2025-11-26 | 217.19.237.54 (ClassC) |
| Date | Domain | IP |
| mx10.emailing.hermanboel.eu | 2025-10-16 | 217.19.237.54 |
| ns2.emailing.hermanboel.eu | 2025-10-17 | 217.19.237.54 |
| gw.emailing.hermanboel.eu | 2025-10-16 | 217.19.237.54 |
| gateway.emailing.hermanboel.eu | 2025-09-21 | 217.19.237.54 |