| Date | IP Address |
| 2023-08-26 | 3.113.115.235 (ClassC) |
| 2024-02-21 | 52.196.140.197 (ClassC) |
| 2024-08-10 | 57.181.61.171 (ClassC) |
| 2024-10-31 | 54.238.224.215 (ClassC) |
| 2024-11-06 | 43.206.18.34 (ClassC) |
| Date | Domain | IP |
| portal1.tohoku-frontier.co.jp | 2024-07-17 | 203.216.216.3 |
| www.tohoku-frontier.co.jp | 2024-09-01 | 35.72.64.92 |