| Date | IP Address |
| 2025-01-09 | 89.191.91.180 (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 |