| Date | IP Address |
| 2020-10-01 | 23.61.165.122 (ClassC) |
| 2023-09-29 | 104.112.186.193 (ClassC) |
| 2024-09-21 | 184.25.60.152 (ClassC) |
| 2024-12-14 | 88.221.154.122 (ClassC) |
| 2026-02-05 | 23.6.96.99 (ClassC) |
| Date | Domain | IP |
| cloud.email.synoptik.dk | 2026-01-09 | 161.71.49.106 |
| image.email.synoptik.dk | 2023-09-29 | 104.112.186.193 |
| click.email.synoptik.dk | 2025-09-09 | 161.71.51.57 |