| Date | IP Address |
| 2023-08-26 | 134.119.111.21 (ClassC) |
| 2023-10-31 | 52.222.191.83 (ClassC) |
| 2023-11-01 | 18.66.112.104 (ClassC) |
| 2023-11-02 | 18.161.21.126 (ClassC) |
| 2024-09-02 | 18.245.86.114 (ClassC) |
| 2024-12-01 | 143.204.215.61 (ClassC) |
| 2025-01-12 | 3.166.96.24 (ClassC) |
| 2025-02-28 | 13.32.110.6 (ClassC) |
| 2025-03-24 | 18.245.86.90 (ClassC) |
| 2025-04-05 | 3.166.96.32 (ClassC) |
| 2025-04-21 | 3.166.96.27 (ClassC) |
| 2025-07-11 | 18.245.86.76 (ClassC) |
| 2025-09-21 | 108.157.150.129 (ClassC) |
| 2026-01-24 | 18.245.86.125 (ClassC) |
| 2026-02-11 | 3.167.227.75 (ClassC) |
| Date | Domain | IP |
| produkte.zehnder-systems.de | 2024-11-25 | 99.84.66.86 |
| staging.wohngesundheit.zehnder-systems.de | 2025-07-11 | 20.105.232.48 |
| www.zehnder-systems.de | 2024-11-25 | 99.84.66.4 |