| Date | IP Address |
| 2026-03-04 | 153.153.152.210 (ClassC) |
| Date | Domain | IP |
| club.seibugroup.jp | 2025-10-07 | 35.73.159.131 |
| image.dm.club.seibugroup.jp | 2024-09-29 | 23.54.19.138 |
| image.phr.club.seibugroup.jp | 2024-12-18 | 23.192.230.140 |
| emi-prd.seibugroup.jp | 2025-08-28 | 52.68.23.239 |
| fastsports-rev.seibugroup.jp | 2024-12-01 | 18.238.217.85 |
| www.seibugroup.jp | 2025-05-09 | 203.180.216.158 |