| Date | IP Address |
| 2014-03-04 | 88.86.107.212 (ClassC) |
| 2026-01-04 | 95.168.212.14 (ClassC) |
| Date | Domain | IP |
| mail10.letajicisen.cz | 2024-10-21 | 78.24.236.86 |
| mail4.letajicisen.cz | 2025-06-18 | 95.168.212.14 |
| mail8.letajicisen.cz | 2025-09-02 | 95.168.212.14 |
| mail9.letajicisen.cz | 2024-10-25 | 78.24.236.86 |
| antispam.letajicisen.cz | 2025-07-24 | 95.168.212.14 |
| correo.letajicisen.cz | 2024-10-02 | 78.24.236.86 |
| authsmtp.letajicisen.cz | 2025-06-19 | 95.168.212.14 |
| hermes.letajicisen.cz | 2024-09-30 | 78.24.236.86 |
| host.letajicisen.cz | 2024-11-06 | 78.24.236.86 |
| gw.letajicisen.cz | 2025-08-12 | 95.168.212.14 |
| www.letajicisen.cz | 2026-01-04 | 95.168.212.14 |
| box.letajicisen.cz | 2024-09-23 | 78.24.236.86 |