| Date | IP Address |
| 2024-11-14 | 52.96.166.72 (ClassC) |
| 2025-01-11 | 52.96.91.56 (ClassC) |
| 2025-04-04 | 52.96.113.152 (ClassC) |
| 2025-04-23 | 52.96.91.40 (ClassC) |
| 2025-09-03 | 52.96.157.136 (ClassC) |
| 2025-11-20 | 52.96.164.216 (ClassC) |
| Date | Domain | IP |
| wfh.hysan.com.hk | 2025-04-28 | 203.193.41.116 |
| mail.hysan.com.hk | 2025-04-30 | 203.193.41.115 |
| autodiscover.hysan.com.hk | 2024-11-14 | 52.96.166.72 |
| inet.hysan.com.hk | 2025-11-03 | 207.46.147.148 |
| www.hysan.com.hk | 2025-09-03 | 45.60.122.38 |