| Date | IP Address |
| 2022-04-21 | 18.182.77.133 (ClassC) |
| 2024-03-29 | 13.115.228.80 (ClassC) |
| 2025-06-22 | 18.179.153.98 (ClassC) |
| 2026-01-08 | 13.159.210.75 (ClassC) |
| 2026-03-02 | 3.112.142.170 (ClassC) |
| Date | Domain | IP |
| api.auth2.chunichi.co.jp | 2025-05-27 | 52.199.208.250 |
| static.chunichi.co.jp | 2023-12-16 | 13.224.14.117 |
| stg-static.chunichi.co.jp | 2021-07-27 | 99.84.64.53 |
| plus.chunichi.co.jp | 2024-02-22 | 35.79.163.165 |
| www.chunichi.co.jp | 2023-11-01 | 3.112.153.98 |
| biz.chunichi.co.jp | 2026-01-08 | 13.159.210.75 |