Koelner-dom.de was checked for availability 5 times during a 1 345 day period beginning on March 14, 2021. The checks conducted revealed koelner-dom.de worked 5 times overall, as evidenced by the 200 status on March 20, 2021. According to evaluations as of November 19, 2024, there were no periods of inactivity for koelner-dom.de. As of November 19, 2024, based on the replies received, no errors had been reported in any of the responses. Against the 1.844 seconds average, koelner-dom.de responded in 1.443 seconds on March 20, 2021.