| Date | IP Address |
| 2025-06-25 | 45.60.126.45 (ClassC) |
| 2025-07-01 | 45.60.124.45 (ClassC) |
| 2025-12-16 | 45.60.64.82 (ClassC) |
| Date | Domain | IP |
| portal.siew.gov.sg | 2025-03-19 | 45.60.122.45 |
| uatportal.siew.gov.sg | 2025-03-20 | 45.60.122.45 |
| register.siew.gov.sg | 2025-03-20 | 45.60.122.45 |
| uatregister.siew.gov.sg | 2025-03-20 | 45.60.122.45 |
| www.siew.gov.sg | 2025-06-30 | 45.60.122.45 |