| Date | IP Address |
| 2025-06-10 | 18.180.167.215 (ClassC) |
| 2026-01-03 | 52.193.199.140 (ClassC) |
| 2026-01-13 | 54.199.100.128 (ClassC) |
| Date | Domain | IP |
| www.thymn2.nissay.co.jp | 2019-03-05 | 210.226.51.128 |
| www.michl-ia.nissay.co.jp | 2025-10-16 | 180.233.109.235 |
| www.account-h.nissay.co.jp | 2025-10-14 | 23.41.4.77 |
| authentication.api.nissay.co.jp | 2024-06-30 | 23.41.4.74 |
| developers.api.nissay.co.jp | 2026-01-03 | 52.193.199.140 |
| image.n-mail.nissay.co.jp | 2025-01-24 | 23.54.33.137 |
| click.n-mail.nissay.co.jp | 2025-10-17 | 136.147.189.179 |
| gitlab.mgmt.kdorigin-jt.nissay.co.jp | 2025-11-18 | 104.18.15.228 |
| hi.kdorigin-st.nissay.co.jp | 2025-09-11 | 104.18.6.76 |
| www.nissay.co.jp | 2024-08-10 | 104.96.163.139 |