| Date | IP Address |
| 2024-01-16 | 204.246.191.106 (ClassC) |
| 2024-01-23 | 204.246.191.126 (ClassC) |
| 2024-04-15 | 204.246.191.108 (ClassC) |
| 2024-05-24 | 99.84.66.77 (ClassC) |
| 2024-09-19 | 99.84.66.24 (ClassC) |
| 2025-01-01 | 3.163.165.124 (ClassC) |
| 2025-01-09 | 3.163.165.72 (ClassC) |
| Date | Domain | IP |
| public-api.individualreisen.check24.de | 2025-01-01 | 89.191.91.180 |
| www.public-api.individualreisen.check24.de | 2024-07-22 | 89.191.91.180 |
| cdn.individualreisen.check24.de | 2024-01-16 | 204.246.191.106 |
| www.individualreisen.check24.de | 2025-01-09 | 89.191.91.180 |