Zener.co.jp's availability has been tested 2 times during the last 2 123 days, beginning February 5, 2019. Zener.co.jp was up a total of 2 times in the tests conducted, most recently returning status code 200 on October 16, 2022. As of November 28, 2024, testing indicates that there had been no instances of inoperability for zener.co.jp. Based on the obtained replies, it can be concluded that there were no errors in any of the responses as of November 28, 2024. Averaging 1.385 seconds, zener.co.jp's response time on October 16, 2022, was 1.997 seconds.