In the past 1 721 days starting from September 14, 2021, mes-j.or.jp's availability has been checked 3 times. Throughout all tests performed, mes-j.or.jp was functional 3 times, with the most recent uptime on May 24, 2026, giving a 200 code. Assessments conducted as of June 1, 2026, confirmed that mes-j.or.jp did not encounter any offline periods. All responses were found to be error-free as of June 1, 2026, based on the received replies. Mes-j.or.jp replied in 2.356 seconds on May 24, 2026, with an average response time of 2.750 seconds.