| Date | IP Address |
| 2021-08-13 | 13.225.206.106 (ClassC) |
| 2021-08-13 | 13.225.206.109 (ClassC) |
| 2021-08-13 | 13.225.206.75 (ClassC) |
| 2024-07-15 | 99.84.66.79 (ClassC) |
| 2025-04-17 | 99.84.66.105 (ClassC) |
| 2026-01-27 | 3.175.34.127 (ClassC) |
| Date | Domain | IP |
| engineering.nifty.co.jp | 2025-10-18 | 57.182.177.244 |
| dev.recruit.nifty.co.jp | 2024-07-15 | 99.84.66.79 |
| www.nifty.co.jp | 2024-06-15 | 99.84.66.124 |
| dev.www.nifty.co.jp | 2024-10-24 | 204.246.191.84 |
| techday.nifty.co.jp | 2025-09-14 | 3.169.173.68 |