| Date | IP Address |
| 2021-08-07 | 23.7.103.127 (ClassC) |
| 2023-08-25 | 23.209.31.61 (ClassC) |
| 2025-06-28 | 23.196.150.45 (ClassC) |
| 2025-12-11 | 23.196.200.60 (ClassC) |
| 2026-01-31 | 2.19.128.64 (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 |