| Date | IP Address |
| 2020-06-01 | 23.201.77.16 (ClassC) |
| 2024-09-13 | 23.198.111.155 (ClassC) |
| 2024-11-25 | 23.6.110.165 (ClassC) |
| 2025-01-01 | 23.44.254.179 (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 |