| Date | IP Address |
| 2018-08-08 | 52.84.31.180 (ClassC) |
| 2018-08-08 | 52.84.31.193 (ClassC) |
| 2018-08-08 | 52.84.31.125 (ClassC) |
| 2025-03-31 | 172.67.148.37 (ClassC) |
| 2025-05-20 | 104.21.41.154 (ClassC) |
| 2026-01-29 | 172.67.215.59 (ClassC) |
| Date | Domain | IP |
| claws.sylpheed.org | 2025-03-14 | 104.21.41.154 |
| www.sylpheed.org | 2025-02-01 | 104.21.41.154 |