From February 11, 2021, until now, which equals 1 510 days, there have been 4 checks done on synthese.jp's accessibility. 4 times, including on February 15, 2021, with a 200 status code, synthese.jp's operability was confirmed through checks conducted. All tests conducted as of April 2, 2025, confirmed that synthese.jp did not experience any periods of inoperability. It has been noted that as of April 2, 2025, there were no error responses based on the responses that were received. Synthese.jp has an average response time of 1.943 seconds, and on February 15, 2021, it was 1.796 seconds.