| Date | IP Address |
| 2021-07-27 | 13.226.38.71 (ClassC) |
| 2021-07-28 | 13.226.29.54 (ClassC) |
| 2024-03-08 | 3.163.24.91 (ClassC) |
| 2024-08-13 | 3.163.24.30 (ClassC) |
| 2024-12-22 | 18.172.170.53 (ClassC) |
| 2025-01-12 | 18.238.192.57 (ClassC) |
| Date | Domain | IP |
| apihub.principal.com.hk | 2024-06-02 | 69.174.121.4 |
| pc.principal.com.hk | 2024-12-22 | 69.174.121.2 |
| rsc.principal.com.hk | 2024-11-13 | 69.174.121.12 |
| api.principal.com.hk | 2024-12-26 | 20.189.121.221 |
| webapp.principal.com.hk | 2024-11-12 | 69.174.121.16 |
| alphahrms.principal.com.hk | 2024-12-22 | 69.174.121.17 |
| members.principal.com.hk | 2024-01-08 | 99.84.66.109 |
| api.members.principal.com.hk | 2024-09-21 | 3.163.24.93 |
| api-uat.principal.com.hk | 2024-12-22 | 52.184.90.130 |
| apihub.pilot.principal.com.hk | 2024-12-22 | 69.174.121.26 |
| apihub.test.principal.com.hk | 2024-06-02 | 69.174.121.27 |
| pisysx.test.principal.com.hk | 2024-03-08 | 3.163.24.91 |
| www.principal.com.hk | 2024-12-22 | 23.185.0.2 |