| Date | IP Address |
| 2020-03-20 | 143.204.35.29 (ClassC) |
| 2020-03-20 | 99.84.166.162 (ClassC) |
| 2020-03-20 | 99.84.166.230 (ClassC) |
| 2024-08-28 | 99.84.66.115 (ClassC) |
| 2025-04-26 | 99.84.66.57 (ClassC) |
| 2025-08-06 | 99.84.66.123 (ClassC) |
| 2025-10-17 | 3.169.173.3 (ClassC) |
| Date | Domain | IP |
| kotsa.cylearn.co.kr | 2025-06-05 | 13.124.209.52 |
| dohwa.cylearn.co.kr | 2025-06-05 | 13.124.209.52 |
| shmic.cylearn.co.kr | 2025-06-04 | 43.202.184.183 |
| hdlc.cylearn.co.kr | 2025-06-09 | 43.201.74.217 |
| cf.cylearn.co.kr | 2024-08-28 | 99.84.66.115 |
| eduwithlh.cylearn.co.kr | 2025-06-12 | 43.202.201.24 |
| sh.cylearn.co.kr | 2025-06-13 | 15.165.16.180 |
| gongsi.cylearn.co.kr | 2025-06-09 | 3.36.18.203 |
| dalim.cylearn.co.kr | 2025-06-05 | 43.202.184.183 |
| ksan.cylearn.co.kr | 2025-06-13 | 43.200.72.100 |
| ulsan.cylearn.co.kr | 2025-06-04 | 13.124.209.52 |
| kpsco.cylearn.co.kr | 2025-06-09 | 43.201.74.217 |
| kps.cylearn.co.kr | 2025-06-09 | 15.165.105.118 |