| Date | IP Address |
| 2018-08-08 | 52.84.31.193 (ClassC) |
| 2018-08-08 | 52.84.31.125 (ClassC) |
| 2018-08-08 | 52.84.31.180 (ClassC) |
| 2024-07-12 | 104.21.41.154 (ClassC) |
| 2025-01-20 | 172.67.148.37 (ClassC) |
| Date | Domain | IP |
| claws.sylpheed.org | 2024-08-05 | 104.21.41.154 |
| www.sylpheed.org | 2024-07-26 | 172.67.148.37 |