The number of availability checks of u4.hochbahn.de over the past 82 days beginning September 3, 2024, reached 1. It was noted during checks that u4.hochbahn.de was not functioning or had other problems as of November 24, 2024. Based on tests, as of November 24, 2024, there were no instances of inoperability for u4.hochbahn.de. The last recorded error was code 404 in the 1 responses that included errors on September 3, 2024. While averaging 0.105 seconds, u4.hochbahn.de responded in 0.105 seconds on September 3, 2024.