| Date | IP Address |
| 2019-11-30 | 23.201.77.16 (ClassC) |
| 2023-08-26 | 104.100.69.164 (ClassC) |
| 2024-11-14 | 23.44.254.179 (ClassC) |
| 2024-11-25 | 23.198.111.155 (ClassC) |
| 2025-04-19 | 23.6.110.165 (ClassC) |
| 2026-01-11 | 184.25.210.75 (ClassC) |
| Date | Domain | IP |
| www1.mastercard.com.sg | 2023-08-25 | 23.196.194.63 |
| stage.mastercard.com.sg | 2023-08-25 | 23.209.31.61 |
| www.mastercard.com.sg | 2025-01-28 | 23.44.254.179 |