| Date | IP Address |
| 2020-06-17 | 99.84.252.110 (ClassC) |
| 2020-06-17 | 99.84.252.20 (ClassC) |
| 2020-06-17 | 99.84.252.22 (ClassC) |
| 2021-01-17 | 99.84.240.98 (ClassC) |
| 2021-05-19 | 65.8.49.89 (ClassC) |
| 2021-08-04 | 65.8.48.46 (ClassC) |
| 2025-03-04 | 99.86.38.40 (ClassC) |
| 2025-04-18 | 99.86.38.48 (ClassC) |
| 2025-09-24 | 18.161.6.75 (ClassC) |
| 2025-11-28 | 18.161.6.86 (ClassC) |
| Date | Domain | IP |
| auth.sejongculturalsociety.org | 2024-12-06 | 52.84.162.41 |
| api.sejongculturalsociety.org | 2025-03-04 | 99.86.38.40 |