| Date | IP Address |
| 2014-10-14 | 93.184.221.133 (ClassC) |
| 2020-01-03 | 23.63.168.81 (ClassC) |
| 2020-12-02 | 23.7.98.10 (ClassC) |
| 2023-11-02 | 23.34.172.185 (ClassC) |
| 2024-05-25 | 23.44.175.167 (ClassC) |
| 2024-07-07 | 23.55.167.18 (ClassC) |
| 2025-12-27 | 23.192.230.138 (ClassC) |
| 2025-12-30 | 23.192.230.137 (ClassC) |
| 2026-02-11 | 23.213.34.86 (ClassC) |
| Date | Domain | IP |
| hongkong.regenthotels.com | 2026-01-18 | 35.194.236.124 |
| qap.regenthotels.com | 2024-02-20 | 23.44.175.173 |
| www.regenthotels.com | 2014-10-14 | 93.184.221.133 |
| staging.www.regenthotels.com | 2026-01-19 | 23.55.167.8 |
| qap.www.regenthotels.com | 2024-07-07 | 23.44.175.173 |
| identity.regenthotels.com | 2025-10-31 | 23.59.88.232 |