Certificateの APEXドメイン対応 58 証明書の情報を⾒てみますと、きちんとAPEXドメイン(noriyukitakei.jp)で設定されて いることがわかります。 $ openssl s_client -connect noriyukitakei.jp:443 -showcerts | openssl x509 -noout -text depth=2 C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert Global Root CA verify return:1 depth=1 C = US, O = DigiCert Inc, CN = GeoTrust TLS DV RSA Mixed SHA256 2020 CA-1 verify return:1 depth=0 CN = noriyukitakei.jp verify return:1 Certificate: Data: Version: 3 (0x2) Serial Number: 0f:27:f1:bc:4d:6f:b5:47:b0:2b:05:bf:68:ed:da:30 Signature Algorithm: sha256WithRSAEncryption Issuer: C = US, O = DigiCert Inc, CN = GeoTrust TLS DV RSA Mixed SHA256 2020 CA-1 Validity Not Before: Mar 21 00:00:00 2021 GMT Not After : Sep 20 23:59:59 2021 GMT Subject: CN = noriyukitakei.jp Subject Public Key Info: ... omit ... 本セッションの ブログのURL