4 tests of kirn.de's functioning were conducted during the 1 438 day period starting on February 21, 2021. From the entirety of checks conducted, kirn.de was operable 4 times, with the most recent occurrence on February 22, 2021, resulting in a code 200 status. As of January 30, 2025, tests indicated that kirn.de did not face any periods of inactivity. The confirmation that no responses have error statuses is provided by replies received as of January 30, 2025. The February 22, 2021, records indicate kirn.de's response time of 0.316 seconds differed from its 0.331 seconds average.