| Date | IP Address |
| 2023-11-01 | 52.79.238.89 (ClassC) |
| 2023-11-19 | 13.124.63.9 (ClassC) |
| 2024-05-31 | 3.37.27.149 (ClassC) |
| 2024-07-24 | 54.180.58.228 (ClassC) |
| 2024-09-15 | 3.35.112.128 (ClassC) |
| 2024-09-22 | 43.200.36.212 (ClassC) |
| 2024-11-18 | 3.39.19.226 (ClassC) |
| 2024-11-24 | 15.165.250.29 (ClassC) |
| 2024-12-24 | 13.209.207.223 (ClassC) |
| 2025-01-04 | 15.165.87.201 (ClassC) |
| Date | Domain | IP |
| cdn.classu.co.kr | 2024-10-03 | 204.246.191.113 |
| www.classu.co.kr | 2024-07-24 | 3.163.24.88 |