{"domain":"techfak.net","port":443,"address":"129.70.142.93","resolved_addresses":["129.70.142.93","2001:638:504:2040::93"],"verified":true,"verification":"Certificate chain, hostname and dates verified using this server\u2019s CA store.","verification_error":null,"certificate":{"subject":{"CN":"techfak.net"},"issuer":{"C":"US","O":"Let's Encrypt","CN":"YR1"},"serial":"065C41623A082EED4C66D79627FD686C5748","version":3,"valid_from":"2026-09-02T11:52:28+00:00","valid_to":"2026-12-01T11:52:27+00:00","validity":"valid_period","days_remaining":49,"san":"DNS:*.techfak.de, DNS:*.techfak.net, DNS:*.techfak.org, DNS:*.techfak.uni-bielefeld.de, DNS:*.tf.uni-bielefeld.de, DNS:*.tf.unibi.de, DNS:techfak.de, DNS:techfak.net, DNS:techfak.org, DNS:techfak.uni-bielefeld.de, DNS:tf.uni-bielefeld.de, DNS:tf.unibi.de","signature":"RSA-SHA256","sha256":"B4:98:02:EF:50:93:45:A0:BF:62:3F:96:72:C9:5D:B7:22:FE:E8:2B:8F:24:61:38:28:E3:ED:0F:53:26:F6:AC","key_type":"RSA","key_bits":2048,"curve":null,"extensions":{"keyUsage":"Digital Signature, Key Encipherment","extendedKeyUsage":"TLS Web Server Authentication","basicConstraints":"CA:FALSE","subjectKeyIdentifier":"EA:9B:85:0F:B6:24:E4:8F:9F:4C:93:AC:1E:50:66:60:39:BC:24:D9","authorityKeyIdentifier":"1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB","authorityInfoAccess":"CA Issuers - URI:http://yr1.i.lencr.org/","subjectAltName":"DNS:*.techfak.de, DNS:*.techfak.net, DNS:*.techfak.org, DNS:*.techfak.uni-bielefeld.de, DNS:*.tf.uni-bielefeld.de, DNS:*.tf.unibi.de, DNS:techfak.de, DNS:techfak.net, DNS:techfak.org, DNS:techfak.uni-bielefeld.de, DNS:tf.uni-bielefeld.de, DNS:tf.unibi.de","certificatePolicies":"Policy: 2.23.140.1.2.1","crlDistributionPoints":"Full Name:\n  URI:http://yr1.c.lencr.org/73.crl\n","ct_precert_scts":"Signed Certificate Timestamp:\n    Version   : v1 (0x0)\n    Log ID    : D8:09:55:3B:94:4F:7A:FF:C8:16:19:6F:94:4F:85:AB:\n                B0:F8:FC:5E:87:55:26:0F:15:D1:2E:72:BB:45:4B:14\n    Timestamp : Sep  2 12:50:58.258 2026 GMT\n    Extensions: none\n    Signature : ecdsa-with-SHA256\n                30:46:02:21:00:C8:C1:AF:FD:D0:7B:E3:04:F1:D8:46:\n                5E:00:B2:BC:68:41:AD:28:AF:6D:63:0D:0B:FE:11:AA:\n                A2:A9:9C:B8:94:02:21:00:E0:6A:85:34:20:27:8E:B6:\n                5D:46:B3:5E:E9:02:E1:64:66:B8:28:96:67:5F:69:1B:\n                1C:84:28:DE:74:D2:B4:20\nSigned Certificate Timestamp:\n    Version   : v1 (0x0)\n    Log ID    : 1A:8B:9D:6B:0F:FE:BF:81:B4:79:39:C6:D2:31:0A:86:\n                D6:D1:02:D4:F0:46:E2:18:2C:9D:E3:5F:5E:26:25:EF\n    Timestamp : Sep  2 12:50:58.368 2026 GMT\n    Extensions: 00:00:05:00:3B:8C:08:29\n    Signature : ecdsa-with-SHA256\n                30:45:02:21:00:8B:69:B4:EF:F1:40:ED:C6:F5:37:5C:\n                60:85:88:C8:2D:DE:1C:B5:A9:BE:BB:C8:DF:04:B0:C5:\n                4B:FA:F9:13:20:02:20:46:44:9B:8F:E4:5E:0F:A6:FB:\n                9A:9C:B6:BB:27:5B:68:E0:76:8F:5A:25:58:15:18:9D:\n                BB:2F:FF:C8:C9:23:3C"},"pem":"-----BEGIN CERTIFICATE-----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\nddfsxyXHn+9HWUn9vDVXa7SukNq9UcdRTTuT\n-----END CERTIFICATE-----\n"},"chain":[{"subject":{"C":"US","O":"Let's Encrypt","CN":"YR1"},"issuer":{"C":"US","O":"ISRG","CN":"Root YR"},"serial":"A20253F15F2691C05DC1CE13B9BCCA4E","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":691,"san":"","signature":"RSA-SHA256","sha256":"13:94:96:34:D9:9C:D6:FD:6A:A8:0B:C0:34:FE:FA:CC:EB:19:69:FE:EF:98:65:86:71:3E:CD:BB:05:75:8D:3F","key_type":"RSA","key_bits":2048,"curve":null,"extensions":{"keyUsage":"Digital Signature, Certificate Sign, CRL Sign","extendedKeyUsage":"TLS Web Server Authentication","basicConstraints":"CA:TRUE, pathlen:0","subjectKeyIdentifier":"1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB","authorityKeyIdentifier":"DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94","authorityInfoAccess":"CA Issuers - 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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-----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\nyDFx8r7i9vIJU5HS3moZLkYWAOilMaV9N56A9Bgb6dNcHkvg3NoaYA==\n-----END CERTIFICATE-----\n"}],"protocol":"TLSv1.2","cipher":"ECDHE-RSA-AES256-GCM-SHA384","cipher_bits":256,"warnings":[],"attempts":[{"address":"129.70.142.93","verified":true,"error":null}],"checked_at":"2026-10-12T19:23:34+00:00","resolver":"Public DNS resolver","scope":"One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan."}