7 availability checks were conducted for 4es.jp within a 2 065 day period starting on April 6, 2019. All checks showed that 4es.jp was either down or experiencing issues, as of December 1, 2024. 4es.jp was down as a result of 14.29% of inspections, or 1 in total, and the last instance was on March 17, 2024. 6 responses contained errors, with the most current error coded as 401 occurring on February 23, 2021. On March 17, 2024, — seconds contrasted the 0.550 seconds average response time of 4es.jp.