| Date | IP Address |
| 2024-08-26 | 13.213.194.233 (ClassC) |
| 2024-11-24 | 3.1.159.59 (ClassC) |
| 2025-01-08 | 13.213.118.94 (ClassC) |
| 2025-09-05 | 18.140.165.134 (ClassC) |
| 2025-09-21 | 52.77.3.34 (ClassC) |
| 2025-11-22 | 13.229.15.120 (ClassC) |
| Date | Domain | IP |
| mail.ocb.com.vn | 2025-03-15 | 103.28.136.12 |
| autodiscover.ocb.com.vn | 2025-09-29 | 103.28.136.12 |
| thietlapmatkhau.ocb.com.vn | 2025-11-20 | 103.28.136.81 |
| www.ocb.com.vn | 2024-11-24 | 3.1.159.59 |