6 availability checks of sumava21.cz were performed in the 1 053 day period starting on January 1, 2022. Responding with a 200 status code, sumava21.cz was operational 6 times, most recently on September 3, 2024, throughout every attempted check. Tests show that as of November 19, 2024, there had been no instances of sumava21.cz's inoperability. It has been noted that as of November 19, 2024, there were no errors in any of the responses received. Against the 0.248 seconds average, sumava21.cz responded in 0.215 seconds on September 3, 2024.