Availability checks of open4u.ru done over the past 273 days from February 28, 2024, reached 4. Among all the analyses done, open4u.ru operated successfully 4 times, last recording on March 26, 2024, returning a code 200. No instances of non-functionality were found for open4u.ru across all tests conducted as of November 28, 2024. There was no error status code returned as of November 28, 2024, according to all responses received. Data indicates 0.208 seconds response time for open4u.ru on March 26, 2024, against 0.258 seconds average.