| Date | IP Address |
| 2025-09-13 | 34.36.21.89 (ClassC) |
| Date | Domain | IP |
| onlyoffice.staging.contractbook.com | 2025-01-19 | 104.22.65.179 |
| eugene.staging.contractbook.com | 2025-03-13 | 172.67.8.101 |
| forms.staging.contractbook.com | 2025-03-13 | 172.67.8.101 |
| api.contractbook.com | 2024-11-22 | 172.67.8.101 |
| file-service.production.contractbook.com | 2025-09-13 | 34.36.21.89 |
| help.contractbook.com | 2025-03-05 | 172.67.8.101 |
| www.contractbook.com | 2023-11-01 | 44.227.170.101 |