| Date | IP Address |
| 2019-10-09 | 52.199.215.139 (ClassC) |
| 2023-10-22 | 52.199.146.248 (ClassC) |
| 2025-08-12 | 54.168.9.164 (ClassC) |
| 2025-08-29 | 54.95.131.78 (ClassC) |
| 2025-11-13 | 13.159.63.237 (ClassC) |
| 2026-02-13 | 18.177.20.201 (ClassC) |
| Date | Domain | IP |
| gr-ce.nnn.ed.jp | 2026-01-28 | 3.169.173.33 |
| secure.nnn.ed.jp | 2025-08-12 | 54.168.9.164 |