| Date | IP Address |
| 2013-04-01 | 78.9.172.4 (ClassC) |
| 2018-05-26 | 195.62.12.78 (ClassC) |
| 2025-01-04 | 78.9.172.5 (ClassC) |
| Date | Domain | IP |
| nieruchomosci.um.zarow.pl | 2024-11-01 | 78.9.172.5 |
| bip.um.zarow.pl | 2025-01-04 | 78.9.172.5 |
| www.um.zarow.pl | 2025-01-01 | 85.194.241.96 |