| Date | IP Address |
| 2015-03-16 | 184.168.221.51 (ClassC) |
| 2019-05-07 | 104.31.71.115 (ClassC) |
| 2024-12-03 | 172.67.197.170 (ClassC) |
| 2025-03-06 | 104.21.32.1 (ClassC) |
| 2025-03-15 | 104.21.48.1 (ClassC) |
| 2025-04-27 | 104.21.96.1 (ClassC) |
| 2026-02-09 | 104.21.21.99 (ClassC) |
| Date | Domain | IP |
| widget.4dseoul.com | 2024-07-13 | 172.67.197.170 |
| www.dev.4dseoul.com | 2024-09-14 | 104.21.21.99 |
| www.4dseoul.com | 2025-03-07 | 104.21.16.1 |