| Date | IP Address |
| 2021-08-04 | 65.8.48.125 (ClassC) |
| 2024-06-30 | 3.163.24.27 (ClassC) |
| 2025-04-20 | 204.246.191.8 (ClassC) |
| 2025-05-02 | 204.246.191.53 (ClassC) |
| Date | Domain | IP |
| a1.cdn.line.dev.mailpublisher.jp | 2024-07-27 | 18.161.6.75 |
| b1.cdn.line.dev.mailpublisher.jp | 2025-04-24 | 204.246.191.54 |
| cdn.dev.mailpublisher.jp | 2024-06-30 | 3.163.24.27 |
| a1.cdn.dev.mailpublisher.jp | 2024-09-24 | 18.161.6.93 |
| b1.cdn.dev.mailpublisher.jp | 2024-06-10 | 99.84.66.23 |
| docs.dev.mailpublisher.jp | 2024-02-14 | 99.84.66.31 |