| Date | IP Address |
| 2024-06-16 | 172.64.147.153 (ClassC) |
| 2024-06-28 | 104.18.40.103 (ClassC) |
| 2024-08-08 | 104.18.16.35 (ClassC) |
| 2025-12-20 | 104.18.35.43 (ClassC) |
| 2026-02-28 | 172.64.152.213 (ClassC) |
| Date | Domain | IP |
| autodiscover.klarstein.bg | 2024-06-16 | 172.64.147.153 |
| daily.klarstein.bg | 2025-03-09 | 104.18.35.43 |