Within the past 1 242 day period starting June 30, 2021, the operability of riess.de was checked 5 times. Including the most recent check on July 8, 2022, which returned a 200 status code, riess.de was reachable 5 times out of all conducted tests. Inspections conducted as of November 24, 2024, did not identify any offline periods for riess.de. The responses that had been received as of November 24, 2024, showed that no response had an error status. While averaging 0.356 seconds, riess.de responded in 0.023 seconds on July 8, 2022.