{"domain":"itkdata.kr","port":443,"address":"75.2.60.5","resolved_addresses":["75.2.60.5"],"verified":true,"verification":"Certificate chain, hostname and dates verified using this server\u2019s CA store.","verification_error":null,"certificate":{"subject":{"CN":"itkdata.kr"},"issuer":{"C":"US","O":"Let's Encrypt","CN":"YE2"},"serial":"0556204E2BB4F7B74F5771D99C5220F63C29","version":3,"valid_from":"2026-09-14T17:34:02+00:00","valid_to":"2026-12-13T17:34:01+00:00","validity":"valid_period","days_remaining":78,"san":"DNS:itkdata.kr, DNS:www.itkdata.kr","signature":"ecdsa-with-SHA384","sha256":"1D:1F:2B:C3:69:4F:53:A0:01:54:4A:2A:0E:B4:47:60:E1:CB:FB:80:CA:A6:EA:AF:D8:CA:B2:C7:30:65:AC:1A","key_type":"EC","key_bits":256,"curve":"prime256v1","extensions":{"keyUsage":"Digital Signature","extendedKeyUsage":"TLS Web Server Authentication","basicConstraints":"CA:FALSE","subjectKeyIdentifier":"9F:64:8F:40:E4:C0:02:D4:16:ED:19:89:4C:22:7D:C7:63:0B:88:F7","authorityKeyIdentifier":"B9:59:F2:8E:CF:22:F0:86:D3:37:48:FF:76:14:18:BA:82:D8:55:87","authorityInfoAccess":"CA Issuers - URI:http://ye2.i.lencr.org/","subjectAltName":"DNS:itkdata.kr, DNS:www.itkdata.kr","certificatePolicies":"Policy: 2.23.140.1.2.1","crlDistributionPoints":"Full Name:\n  URI:http://ye2.c.lencr.org/42.crl\n","ct_precert_scts":"Signed Certificate Timestamp:\n    Version   : v1 (0x0)\n    Log ID    : 26:E3:64:6E:58:69:21:23:BC:34:3F:47:24:35:9B:37:\n                92:CD:24:5A:88:D8:15:D3:93:33:FD:99:18:AB:47:23\n    Timestamp : Sep 14 18:32:30.485 2026 GMT\n    Extensions: 00:00:05:00:41:D7:9B:17\n    Signature : ecdsa-with-SHA256\n                30:46:02:21:00:ED:6C:EA:10:0A:77:82:99:4F:22:F3:\n                07:6A:E8:CB:DC:8E:09:D2:A1:CF:70:51:3E:0C:87:A3:\n                AD:91:D7:48:06:02:21:00:99:F7:DC:91:0E:F1:C0:D4:\n                F4:09:C0:90:DE:C7:82:D1:09:D2:F2:8C:C0:70:69:47:\n                C3:13:B3:07:B6:BF:9C:94\nSigned Certificate Timestamp:\n    Version   : v1 (0x0)\n    Log ID    : C2:31:7E:57:45:19:A3:45:EE:7F:38:DE:B2:90:41:EB:\n                C7:C2:21:5A:22:BF:7F:D5:B5:AD:76:9A:D9:0E:52:CD\n    Timestamp : Sep 14 18:32:34.690 2026 GMT\n    Extensions: none\n    Signature : ecdsa-with-SHA256\n                30:45:02:21:00:B8:EF:8B:A7:CE:E9:16:4D:C0:C7:CA:\n                49:D4:25:6D:CF:3C:46:8B:24:F9:FF:E8:A9:04:BB:58:\n                58:16:54:13:BC:02:20:7C:F3:EB:91:AE:0F:44:F6:48:\n                C2:89:F2:6E:33:15:06:F6:CD:D8:3D:9F:20:50:24:75:\n                F5:39:7A:18:E9:96:F3"},"pem":"-----BEGIN CERTIFICATE-----\nMIIDkjCCAxmgAwIBAgISBVYgTiu097dPV3HZnFIg9jwpMAoGCCqGSM49BAMDMDMx\nCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MQwwCgYDVQQDEwNZ\nRTIwHhcNMjYwOTE0MTczNDAyWhcNMjYxMjEzMTczNDAxWjAVMRMwEQYDVQQDEwpp\ndGtkYXRhLmtyMFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEY3+XYVXgYbtP86Gj\n4JlNxbiwhIiMVa3cLjUzMYZgqtupyR6pZiniBlTtoHTN4Z2nZOHBM63kTftJ1oyr\nM4UqpKOCAikwggIlMA4GA1UdDwEB/wQEAwIHgDATBgNVHSUEDDAKBggrBgEFBQcD\nATAMBgNVHRMBAf8EAjAAMB0GA1UdDgQWBBSfZI9A5MAC1BbtGYlMIn3HYwuI9zAf\nBgNVHSMEGDAWgBS5WfKOzyLwhtM3SP92FBi6gthVhzAzBggrBgEFBQcBAQQnMCUw\nIwYIKwYBBQUHMAKGF2h0dHA6Ly95ZTIuaS5sZW5jci5vcmcvMCUGA1UdEQQeMByC\nCml0a2RhdGEua3KCDnd3dy5pdGtkYXRhLmtyMBMGA1UdIAQMMAowCAYGZ4EMAQIB\nMC4GA1UdHwQnMCUwI6AhoB+GHWh0dHA6Ly95ZTIuYy5sZW5jci5vcmcvNDIuY3Js\nMIIBDQYKKwYBBAHWeQIEAgSB/gSB+wD5AH8AJuNkblhpISO8ND9HJDWbN5LNJFqI\n2BXTkzP9mRirRyMAAAGgoTEwFQAIAAAFAEHXmxcEAwBIMEYCIQDtbOoQCneCmU8i\n8wdq6MvcjgnSoc9wUT4Mh6OtkddIBgIhAJn33JEO8cDU9AnAkN7HgtEJ0vKMwHBp\nR8MTswe2v5yUAHYAwjF+V0UZo0XufzjespBB68fCIVoiv3/Vta12mtkOUs0AAAGg\noTFAggAABAMARzBFAiEAuO+Lp87pFk3Ax8pJ1CVtzzxGiyT5/+ipBLtYWBZUE7wC\nIHzz65GuD0T2SMKJ8m4zFQb2zdg9nyBQJHX1OXoY6ZbzMAoGCCqGSM49BAMDA2cA\nMGQCME12wYwq19hmjRZ0H1uItEZPZL+yfkyVSdccgT4+0Auy6y5mX8UaOBxBjXGF\nVry1wgIwC/2EDUCfvb91svaBgkBOAFV6IuhtKyn5B3riTlZial7C7+ju6zG3E3Hg\n6xlVGYVr\n-----END CERTIFICATE-----\n"},"chain":[{"subject":{"C":"US","O":"Let's Encrypt","CN":"YE2"},"issuer":{"C":"US","O":"ISRG","CN":"Root YE"},"serial":"4DF3B15DD6C0784C507CD37B58E6F115","version":3,"valid_from":"2025-09-03T00:00:00+00:00","valid_to":"2028-09-02T23:59:59+00:00","validity":"valid_period","days_remaining":707,"san":"","signature":"ecdsa-with-SHA384","sha256":"97:65:8D:E8:C6:8D:FA:98:AC:E1:E5:02:8A:63:D5:4A:1A:AE:91:1B:3E:21:47:10:76:C6:85:0C:D0:8C:BA:B4","key_type":"EC","key_bits":384,"curve":"secp384r1","extensions":{"keyUsage":"Digital Signature, Certificate Sign, CRL Sign","extendedKeyUsage":"TLS Web Server Authentication","basicConstraints":"CA:TRUE, pathlen:0","subjectKeyIdentifier":"B9:59:F2:8E:CF:22:F0:86:D3:37:48:FF:76:14:18:BA:82:D8:55:87","authorityKeyIdentifier":"A3:C8:26:5A:8E:A1:4C:D0:35:63:FC:9B:23:C8:3A:AE:56:F3:4F:56","authorityInfoAccess":"CA Issuers - URI:http://ye.i.lencr.org/","certificatePolicies":"Policy: 2.23.140.1.2.1","crlDistributionPoints":"Full Name:\n  URI:http://ye.c.lencr.org/\n"},"pem":"-----BEGIN CERTIFICATE-----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\nDKrIb2EKk5NpOpE6/XttQYZV/3gilB9l+Cc/DOVwmyg=\n-----END CERTIFICATE-----\n"},{"subject":{"C":"US","O":"ISRG","CN":"Root YE"},"issuer":{"C":"US","O":"Internet Security Research Group","CN":"ISRG Root X2"},"serial":"872165FC34B6E5FBA8ADD5B3705FB53A","version":3,"valid_from":"2026-05-13T00:00:00+00:00","valid_to":"2032-09-02T23:59:59+00:00","validity":"valid_period","days_remaining":2168,"san":"","signature":"ecdsa-with-SHA384","sha256":"0F:C0:90:1C:CA:2B:AE:9E:9F:DB:B0:2D:50:D0:2F:10:94:F7:B3:66:72:08:69:91:B9:E8:97:62:6D:C4:85:F0","key_type":"EC","key_bits":384,"curve":"secp384r1","extensions":{"keyUsage":"Certificate Sign, CRL Sign","extendedKeyUsage":"TLS Web Server Authentication","basicConstraints":"CA:TRUE","subjectKeyIdentifier":"A3:C8:26:5A:8E:A1:4C:D0:35:63:FC:9B:23:C8:3A:AE:56:F3:4F:56","authorityKeyIdentifier":"7C:42:96:AE:DE:4B:48:3B:FA:92:F8:9E:8C:CF:6D:8B:A9:72:37:95","authorityInfoAccess":"CA Issuers - URI:http://x2.i.lencr.org/","certificatePolicies":"Policy: 2.23.140.1.2.1","crlDistributionPoints":"Full Name:\n  URI:http://x2.c.lencr.org/\n"},"pem":"-----BEGIN CERTIFICATE-----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\n6hSW1/IWaas6dg==\n-----END CERTIFICATE-----\n"},{"subject":{"C":"US","O":"Internet Security Research Group","CN":"ISRG Root X2"},"issuer":{"C":"US","O":"Internet Security Research Group","CN":"ISRG Root X1"},"serial":"6C8F1DC727C7117F7BAF853AC980F9CD","version":3,"valid_from":"2026-05-13T00:00:00+00:00","valid_to":"2032-09-02T23:59:59+00:00","validity":"valid_period","days_remaining":2168,"san":"","signature":"RSA-SHA256","sha256":"EE:5F:7A:BD:69:81:BB:02:55:63:2C:D8:F4:92:83:45:1B:4B:18:84:4D:12:04:0B:44:EE:00:F0:7B:8F:E2:C6","key_type":"EC","key_bits":384,"curve":"secp384r1","extensions":{"keyUsage":"Certificate Sign, CRL Sign","extendedKeyUsage":"TLS Web Server Authentication, TLS Web Client Authentication","basicConstraints":"CA:TRUE","subjectKeyIdentifier":"7C:42:96:AE:DE:4B:48:3B:FA:92:F8:9E:8C:CF:6D:8B:A9:72:37:95","authorityKeyIdentifier":"79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E","authorityInfoAccess":"CA Issuers - URI:http://x1.i.lencr.org/","certificatePolicies":"Policy: 2.23.140.1.2.1","crlDistributionPoints":"Full Name:\n  URI:http://x1.c.lencr.org/\n"},"pem":"-----BEGIN CERTIFICATE-----\nMIIEcDCCAligAwIBAgIQbI8dxyfHEX97r4U6yYD5zTANBgkqhkiG9w0BAQsFADBP\nMQswCQYDVQQGEwJVUzEpMCcGA1UEChMgSW50ZXJuZXQgU2VjdXJpdHkgUmVzZWFy\nY2ggR3JvdXAxFTATBgNVBAMTDElTUkcgUm9vdCBYMTAeFw0yNjA1MTMwMDAwMDBa\nFw0zMjA5MDIyMzU5NTlaME8xCzAJBgNVBAYTAlVTMSkwJwYDVQQKEyBJbnRlcm5l\ndCBTZWN1cml0eSBSZXNlYXJjaCBHcm91cDEVMBMGA1UEAxMMSVNSRyBSb290IFgy\nMHYwEAYHKoZIzj0CAQYFK4EEACIDYgAEzZvVn4CDCuwJSvMWSj5cz3es3mcFDR0H\nttwW+1qLFNvicWDEukWVEYmO6gbf9yoWHKS5xcUy4APgHoIYOIvXRdgKam7mAHf7\nAlF9ItgKbppbd9/w+kHsOdx1ymgHDB/qo4H1MIHyMA4GA1UdDwEB/wQEAwIBBjAd\nBgNVHSUEFjAUBggrBgEFBQcDAQYIKwYBBQUHAwIwDwYDVR0TAQH/BAUwAwEB/zAd\nBgNVHQ4EFgQUfEKWrt5LSDv6kviejM9ti6lyN5UwHwYDVR0jBBgwFoAUebRZ5nu2\n5eQBc4AIiMgaWPbpm24wMgYIKwYBBQUHAQEEJjAkMCIGCCsGAQUFBzAChhZodHRw\nOi8veDEuaS5sZW5jci5vcmcvMBMGA1UdIAQMMAowCAYGZ4EMAQIBMCcGA1UdHwQg\nMB4wHKAaoBiGFmh0dHA6Ly94MS5jLmxlbmNyLm9yZy8wDQYJKoZIhvcNAQELBQAD\nggIBAD2/e9frmMxNpCV03qUHegg+MV2wz9644YoXdqtH8RyWYcBO7xfjjGEXdU1e\n/o0OkEFiynUCOSIk/vLLo7ttz6CPAeNlWfC0XNkoGeWgK6jjXvozBaGuGH5n0Ufo\nshMeWTuURqNN5G00sSXDTBrpp2+mgvdZQjb8K11TYMA25QA+YHNfbIEL0BniAhKS\n2gsnJjSzrdZLI+EZ7SEyqdR2rkjd1KutLDU+n3TFyxjniZVGur4YlhMP3mY/dV95\nIruAkkjOZier6hGBdEgZXXvaCz9u9iVEadsIE75pAGL8oHV5vxdARDiotRpul1IN\n/UZwzAbrfUFcw1HkAcYD/mlZfnQ2ieCF2MS7j3Vhv7JPDKp45fmykmzYNSrumRW0\nupFFKDBOoF7hsOb7oLyHS+Uft6jOUfOrogj8YUx38hKb2K20r42OgsSdDdxdeYWc\nMS3Sb6mwJeSZEYxJ2gaXnDSPaKhhrNkYwljyVQyr4Nq+MEJytXNTnHqaAcrNwZlV\npcJL1KBnMrMjP7eanvUwL3FYj3cF17jtboLt7gLoi4+2rWZFvn+w54jmd/FIuhhZ\ncEaU/wvU6BUNMtcVquVGHp7itQeDth5j+XL3j4WJ2SABwzUl6OeYdgpIt/ITZa+p\nTT0mQ/r5XyA4MEAiabn7XJjvCERlF2dcn2wqJw+CreTkkQ2R\n-----END CERTIFICATE-----\n"}],"protocol":"TLSv1.3","cipher":"TLS_AES_128_GCM_SHA256","cipher_bits":128,"warnings":[],"attempts":[{"address":"75.2.60.5","verified":true,"error":null}],"checked_at":"2026-09-26T12:20:24+00:00","resolver":"Public DNS resolver","scope":"One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan."}