| Date | IP Address |
| 2025-01-12 | 213.192.252.165 (ClassC) |
| Date | Domain | IP |
| static.obs-edu.com | 2025-01-12 | 213.192.252.165 |
| onlinebs.obs-edu.com | 2024-08-21 | 172.64.153.235 |
| campus.obs-edu.com | 2023-10-31 | 3.69.131.161 |
| landings.projectmanagement.obs-edu.com | 2015-03-23 | 198.47.108.75 |
| www.obs-edu.com | 2025-01-12 | 213.192.252.165 |