| Date | IP Address |
| 2021-12-10 | 13.224.7.63 (ClassC) |
| 2026-01-30 | 18.161.6.57 (ClassC) |
| Date | Domain | IP |
| kitamura-pocketbook-public.pocketbook.kitamura.jp | 2026-01-29 | 3.169.173.119 |
| api.stg.pocketbook.kitamura.jp | 2025-02-04 | 204.246.191.82 |
| api.pocketbook.kitamura.jp | 2024-03-13 | 204.246.191.6 |
| document.pocketbook.kitamura.jp | 2025-03-05 | 204.246.191.70 |
| api.dev.pocketbook.kitamura.jp | 2024-02-24 | 204.246.191.122 |
| kitamura-pocketbook-process.dev.pocketbook.kitamura.jp | 2026-01-30 | 18.161.6.57 |
| webview.pocketbook.kitamura.jp | 2024-07-07 | 3.163.24.50 |