| Date | IP Address |
| 2024-12-07 | 172.67.136.26 (ClassC) |
| 2025-01-18 | 104.21.86.190 (ClassC) |
| Date | Domain | IP |
| ifss-validator.crt.hr | 2024-11-25 | 172.104.134.149 |
| ifssvalidator.crt.hr | 2024-11-25 | 172.104.134.149 |
| support.crt.hr | 2024-11-25 | 172.104.229.165 |
| www.crt.hr | 2024-12-07 | 104.21.86.190 |