| Date | IP Address |
| 2023-11-01 | 99.84.66.29 (ClassC) |
| 2024-11-14 | 99.84.66.105 (ClassC) |
| 2025-10-06 | 3.163.24.103 (ClassC) |
| Date | Domain | IP |
| api.data.overtax.co.kr | 2025-02-20 | 3.37.100.245 |
| stag-api.data.overtax.co.kr | 2025-02-23 | 43.200.84.71 |
| app.sole.overtax.co.kr | 2024-05-29 | 18.161.6.18 |
| app.overtax.co.kr | 2024-09-21 | 204.246.191.94 |
| www.overtax.co.kr | 2023-11-01 | 99.84.66.29 |