1 tests have been conducted on zfu.de's availability in the 2 044 days since June 6, 2019. Having been checked 1 times in total, zfu.de was last confirmed operational on June 6, 2019, as evidenced by a 200 status code. During all inspections conducted as of January 9, 2025, zfu.de experienced no downtime. There were no error responses reported as of January 9, 2025, according to the received replies. The June 6, 2019, response contrasted, being 0.109 seconds for zfu.de against its 0.109 seconds average.