| Date | IP Address |
| 2024-11-09 | 89.191.86.149 (ClassC) |
| Date | Domain | IP |
| ac1.flug.check24.de | 2024-10-20 | 89.191.66.81 |
| pbe.flug.check24.de | 2024-11-09 | 89.191.86.149 |
| search.flug.check24.de | 2024-10-14 | 89.191.86.149 |
| app-api.flug.check24.de | 2024-09-19 | 89.191.66.81 |
| m.flug.check24.de | 2024-10-14 | 89.191.66.81 |
| www.flug.check24.de | 2024-09-19 | 89.191.66.81 |