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https://khws4v1.myhome.cx/article/2017/10/test-certificate-info%e3%81%a8%e3%81%84%e3%81%86user-agent%e3%81%ae%e6%ad%a3%e4%bd%93%e3%81%af%ef%bc%9f/
"Test Certificate Info"というUser Agentの正体は?