| Date | IP Address |
| 2019-09-20 | 104.114.5.29 (ClassC) |
| 2024-04-12 | 23.37.209.91 (ClassC) |
| 2024-09-06 | 23.196.150.45 (ClassC) |
| 2024-09-13 | 23.196.200.60 (ClassC) |
| 2025-01-17 | 2.19.128.64 (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 | 2024-09-13 | 23.198.111.155 |