Starting on June 18, 2021, vthk.de's operability has been analyzed 5 times over the last 1 484 days. With a total of 5 instances of operability out of all conducted tests, vthk.de's last recorded uptime on September 13, 2021, returned a code 200. As of July 12, 2025, no offline periods were noted for vthk.de in any of the inspections that were conducted. All replies that have been received as of July 12, 2025, confirm that there are no responses with an error status. Vthk.de averaged a response time of 0.194 seconds, while on September 13, 2021, it replied in 0.056 seconds.