| Date | IP Address |
| 2019-11-28 | 52.220.178.150 (ClassC) |
| 2020-02-18 | 3.0.39.65 (ClassC) |
| 2021-10-30 | 52.85.135.66 (ClassC) |
| 2021-10-30 | 52.222.158.65 (ClassC) |
| 2021-12-10 | 18.67.76.42 (ClassC) |
| 2025-03-20 | 18.161.6.38 (ClassC) |
| 2025-04-14 | 18.161.6.51 (ClassC) |
| 2025-07-19 | 18.161.6.21 (ClassC) |
| 2025-08-23 | 18.161.6.66 (ClassC) |
| 2025-11-26 | 3.169.173.14 (ClassC) |
| Date | Domain | IP |
| mosaic.cis.edu.sg | 2024-09-10 | 99.84.66.85 |
| my-stg.cis.edu.sg | 2025-05-09 | 52.74.135.156 |
| resources.cis.edu.sg | 2025-03-19 | 18.161.6.86 |
| checkout.cis.edu.sg | 2025-08-01 | 23.192.230.147 |
| my-stg-dav.cis.edu.sg | 2025-08-03 | 52.74.135.156 |
| www.cis.edu.sg | 2025-03-20 | 18.161.6.38 |
| pay.cis.edu.sg | 2025-03-21 | 13.215.43.243 |