| Date | IP Address |
| 2017-11-15 | 54.228.220.18 (ClassC) |
| 2018-05-29 | 52.204.36.232 (ClassC) |
| 2018-05-29 | 54.165.61.154 (ClassC) |
| 2019-01-29 | 52.54.155.193 (ClassC) |
| 2019-02-06 | 52.72.95.212 (ClassC) |
| 2019-03-21 | 35.153.81.218 (ClassC) |
| 2019-03-21 | 3.95.45.43 (ClassC) |
| 2019-03-26 | 52.72.54.76 (ClassC) |
| 2019-04-02 | 35.161.158.132 (ClassC) |
| 2019-04-11 | 52.206.196.84 (ClassC) |
| 2019-04-23 | 18.214.30.233 (ClassC) |
| 2020-11-26 | 34.208.226.23 (ClassC) |
| 2024-10-27 | 54.68.171.176 (ClassC) |
| 2024-12-27 | 52.42.122.102 (ClassC) |
| 2025-01-11 | 44.242.99.40 (ClassC) |
| 2025-10-14 | 34.210.109.146 (ClassC) |
| 2025-12-25 | 44.229.220.222 (ClassC) |
| 2026-01-06 | 34.217.231.110 (ClassC) |
| Date | Domain | IP |
| api.contractbook.co | 2025-09-13 | 34.36.21.89 |
| app.contractbook.co | 2024-06-16 | 172.67.180.212 |