| Date | IP Address |
| 2021-09-24 | 35.156.51.155 (ClassC) |
| 2022-02-22 | 3.64.236.3 (ClassC) |
| 2022-05-20 | 35.157.172.68 (ClassC) |
| 2023-10-04 | 52.29.253.247 (ClassC) |
| 2023-10-31 | 3.69.131.161 (ClassC) |
| 2023-12-18 | 3.66.237.29 (ClassC) |
| 2024-04-13 | 3.65.84.44 (ClassC) |
| 2024-04-30 | 35.158.59.114 (ClassC) |
| 2024-05-05 | 3.66.36.205 (ClassC) |
| 2024-08-29 | 3.66.144.143 (ClassC) |
| 2024-11-20 | 35.157.103.34 (ClassC) |
| 2024-11-24 | 3.121.72.134 (ClassC) |
| 2025-04-26 | 3.68.9.251 (ClassC) |
| 2025-11-17 | 3.165.160.50 (ClassC) |
| 2026-01-11 | 18.161.6.60 (ClassC) |
| Date | Domain | IP |
| static.obs-edu.com | 2025-09-14 | 213.192.252.165 |
| onlinebs.obs-edu.com | 2024-09-14 | 104.18.34.21 |
| 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 | 2025-04-30 | 213.192.252.165 |