| Date | IP Address |
| 2019-06-30 | 46.23.48.72 (ClassC) |
| 2024-06-09 | 46.23.48.95 (ClassC) |
| 2026-01-25 | 109.123.222.214 (ClassC) |
| Date | Domain | IP |
| sp1.u-n.cz | 2025-06-02 | 185.70.216.38 |
| beta.u-n.cz | 2025-06-22 | 46.23.48.95 |
| televize.u-n.cz | 2025-07-10 | 46.23.48.95 |
| portal.u-n.cz | 2025-12-21 | 46.23.48.95 |
| webcam.u-n.cz | 2025-09-10 | 46.23.48.95 |
| intranet.u-n.cz | 2024-09-02 | 142.251.211.243 |
| www.u-n.cz | 2024-05-17 | 46.23.48.95 |