| Date | IP Address |
| 2023-08-15 | 23.203.225.95 (ClassC) |
| 2023-08-26 | 104.100.69.164 (ClassC) |
| 2023-10-25 | 23.198.155.200 (ClassC) |
| 2024-02-21 | 184.86.192.224 (ClassC) |
| 2024-04-19 | 23.222.147.172 (ClassC) |
| 2025-03-01 | 23.5.254.177 (ClassC) |
| 2025-04-30 | 23.6.110.165 (ClassC) |
| 2025-05-09 | 23.44.254.179 (ClassC) |
| 2025-09-03 | 23.198.111.155 (ClassC) |
| 2026-01-08 | 184.25.210.75 (ClassC) |
| Date | Domain | IP |
| www1.mastercard.co.kr | 2023-08-25 | 23.214.100.11 |
| stage.mastercard.co.kr | 2024-04-12 | 23.37.209.91 |
| mtf.mastercard.co.kr | 2023-08-25 | 23.56.190.34 |
| www.mastercard.co.kr | 2025-01-01 | 23.44.254.179 |