| Date | IP Address |
| 2021-01-17 | 2.19.195.90 (ClassC) |
| 2021-04-10 | 2.21.14.33 (ClassC) |
| 2021-05-05 | 23.72.248.8 (ClassC) |
| 2021-06-12 | 104.81.60.193 (ClassC) |
| 2025-05-02 | 31.220.121.40 (ClassC) |
| Date | Domain | IP |
| www.impfterminservice.de | 2025-05-02 | 31.220.121.40 |
| 005-iz.impfterminservice.de | 2021-01-24 | 104.115.83.43 |