| Date | IP Address |
| 2025-09-26 | 145.237.204.44 (ClassC) |
| Date | Domain | IP |
| mx1.mf.gov.pl | 2014-06-21 | 145.237.237.24 |
| mx2.mf.gov.pl | 2013-12-18 | 145.237.237.20 |
| e-deklaracje.mf.gov.pl | 2018-07-11 | 145.237.193.133 |
| finanse.mf.gov.pl | 2025-11-01 | 145.237.204.44 |
| ksef.mf.gov.pl | 2026-02-20 | 45.60.74.103 |
| wl-api.mf.gov.pl | 2025-12-14 | 45.60.74.103 |
| jpk.mf.gov.pl | 2025-09-26 | 145.237.204.44 |
| www.jpk.mf.gov.pl | 2025-10-05 | 145.237.204.44 |
| www.mf.gov.pl | 2025-05-17 | 145.237.204.44 |
| portalpodatkowy.mf.gov.pl | 2025-11-01 | 145.237.204.44 |