| Date | IP Address |
| 2014-05-20 | 78.9.172.4 (ClassC) |
| 2019-04-03 | 195.62.12.78 (ClassC) |
| 2025-05-02 | 85.194.241.96 (ClassC) |
| Date | Domain | IP |
| nieruchomosci.um.zarow.pl | 2024-11-01 | 78.9.172.5 |
| bip.um.zarow.pl | 2025-04-11 | 78.9.172.5 |
| www.um.zarow.pl | 2025-04-30 | 85.194.241.96 |