{"domain":"knowbe4.com","port":443,"address":"108.156.60.16","resolved_addresses":["108.156.60.16","108.156.60.33","108.156.60.52","108.156.60.56"],"verified":true,"verification":"Certificate chain, hostname and dates verified using this server\u2019s CA store.","verification_error":null,"certificate":{"subject":{"CN":"knowbe4.com"},"issuer":{"C":"US","O":"Amazon","CN":"Amazon RSA 2048 M01"},"serial":"0ADFB7DA5182CAEA969FE4F166FD830D","version":3,"valid_from":"2026-09-22T00:00:00+00:00","valid_to":"2027-04-07T23:59:59+00:00","validity":"valid_period","days_remaining":187,"san":"DNS:knowbe4.com, DNS:kb4compliance.com","signature":"RSA-SHA256","sha256":"81:F8:CE:7A:2D:82:15:3C:DF:13:C2:15:96:64:95:C6:2D:DA:2D:2B:AF:01:C7:A3:CC:FC:FC:2A:62:80:C2:85","key_type":"RSA","key_bits":2048,"curve":null,"extensions":{"authorityKeyIdentifier":"81:B8:0E:63:8A:89:12:18:E5:FA:3B:3B:50:95:9F:E6:E5:90:13:85","subjectKeyIdentifier":"50:80:F4:35:B6:5D:C3:BD:E6:19:59:1C:FE:42:E0:C4:7B:F7:2D:2D","subjectAltName":"DNS:knowbe4.com, DNS:kb4compliance.com","certificatePolicies":"Policy: 2.23.140.1.2.1","keyUsage":"Digital Signature, Key Encipherment","extendedKeyUsage":"TLS Web Server Authentication","crlDistributionPoints":"Full Name:\n  URI:http://crl.r2m01.amazontrust.com/r2m01.crl\n","authorityInfoAccess":"OCSP - URI:http://ocsp.r2m01.amazontrust.com\nCA Issuers - URI:http://crt.r2m01.amazontrust.com/r2m01.cer","basicConstraints":"CA:FALSE","ct_precert_scts":"Signed Certificate Timestamp:\n    Version   : v1 (0x0)\n    Log ID    : 4C:63:DC:98:E5:9C:1D:AB:88:F6:1E:8A:3D:DE:AE:8F:\n                AB:44:A3:37:7B:5F:9B:94:C3:FB:A1:9C:FC:C1:BE:26\n    Timestamp : Sep 22 07:22:32.685 2026 GMT\n    Extensions: none\n    Signature : ecdsa-with-SHA256\n                30:44:02:20:34:E2:CD:E5:C2:93:4D:8F:96:EF:97:0F:\n                AD:C0:6D:37:04:B0:7E:5E:2E:7A:5E:1B:01:4C:61:0C:\n                06:B5:DB:9F:02:20:33:49:E9:8B:F4:20:9E:21:4D:B5:\n                7A:B3:8A:96:1E:8D:F2:CC:76:15:7F:D2:54:7B:9B:A4:\n                6F:09:6F:6F:8D:F6\nSigned Certificate Timestamp:\n    Version   : v1 (0x0)\n    Log ID    : 44:C2:BD:0C:E9:14:0E:64:A5:C9:4A:01:93:0A:5A:A1:\n                BB:35:97:0E:00:EE:11:16:89:68:2A:1C:44:D7:B5:66\n    Timestamp : Sep 22 07:22:32.760 2026 GMT\n    Extensions: none\n    Signature : ecdsa-with-SHA256\n                30:45:02:20:2D:7B:AD:BA:8D:4B:C3:69:0C:C8:B9:1A:\n                E0:63:22:CD:BE:09:69:DE:86:F8:23:9E:B0:FC:36:81:\n                C9:DB:F4:E2:02:21:00:E5:98:49:AE:D5:D4:91:98:47:\n                FD:C5:FC:64:23:16:70:E9:A3:CC:14:A6:65:CB:AD:2D:\n                AA:C5:12:D3:13:CB:BB\nSigned Certificate Timestamp:\n    Version   : v1 (0x0)\n    Log ID    : 1C:9F:68:2C:E9:FA:F0:45:69:50:F8:1B:96:8A:87:DD:\n                DB:32:10:D8:4C:E6:C8:B2:E3:82:52:4A:C4:CF:59:9F\n    Timestamp : Sep 22 07:22:32.822 2026 GMT\n    Extensions: none\n    Signature : ecdsa-with-SHA256\n                30:45:02:21:00:83:D8:40:7B:57:87:B2:D0:70:CE:46:\n                D4:9A:C0:4C:E1:76:90:0B:13:27:E8:2A:C8:C9:DB:1F:\n                C6:56:5C:D5:E4:02:20:6F:9F:04:0E:9E:60:AD:C1:36:\n                70:4E:8E:57:4C:FA:9D:0D:F5:97:09:92:DC:60:4F:59:\n                B0:9B:E7:F4:92:B7:73"},"pem":"-----BEGIN CERTIFICATE-----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\n-----END CERTIFICATE-----\n"},"chain":[{"subject":{"C":"US","O":"Amazon","CN":"Amazon RSA 2048 M01"},"issuer":{"C":"US","O":"Amazon","CN":"Amazon Root CA 1"},"serial":"077312380B9D6688A33B1ED9BF9CCDA68E0E0F","version":3,"valid_from":"2022-08-23T22:21:28+00:00","valid_to":"2030-08-23T22:21:28+00:00","validity":"valid_period","days_remaining":1421,"san":"","signature":"RSA-SHA256","sha256":"53:38:EB:EC:8F:B2:AC:60:99:61:26:D3:E7:6A:A3:4F:D0:F3:31:8A:C7:8E:BB:7A:C8:F6:F1:36:1F:48:4B:33","key_type":"RSA","key_bits":2048,"curve":null,"extensions":{"basicConstraints":"CA:TRUE, pathlen:0","keyUsage":"Digital Signature, Certificate Sign, CRL Sign","extendedKeyUsage":"TLS Web Server Authentication, TLS Web Client Authentication","subjectKeyIdentifier":"81:B8:0E:63:8A:89:12:18:E5:FA:3B:3B:50:95:9F:E6:E5:90:13:85","authorityKeyIdentifier":"84:18:CC:85:34:EC:BC:0C:94:94:2E:08:59:9C:C7:B2:10:4E:0A:08","authorityInfoAccess":"OCSP - URI:http://ocsp.rootca1.amazontrust.com\nCA Issuers - URI:http://crt.rootca1.amazontrust.com/rootca1.cer","crlDistributionPoints":"Full Name:\n  URI:http://crl.rootca1.amazontrust.com/rootca1.crl\n","certificatePolicies":"Policy: 2.23.140.1.2.1"},"pem":"-----BEGIN CERTIFICATE-----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\nxRRrwszrzX/WWGm6wyB+f7C4\n-----END CERTIFICATE-----\n"},{"subject":{"C":"US","O":"Amazon","CN":"Amazon Root CA 1"},"issuer":{"C":"US","ST":"Arizona","L":"Scottsdale","O":"Starfield Technologies, Inc.","CN":"Starfield Services Root Certificate Authority - G2"},"serial":"067F944A2A27CDF3FAC2AE2B01F908EEB9C4C6","version":3,"valid_from":"2015-05-25T12:00:00+00:00","valid_to":"2037-12-31T01:00:00+00:00","validity":"valid_period","days_remaining":4107,"san":"","signature":"RSA-SHA256","sha256":"87:DC:D4:DC:74:64:0A:32:2C:D2:05:55:25:06:D1:BE:64:F1:25:96:25:80:96:54:49:86:B4:85:0B:C7:27:06","key_type":"RSA","key_bits":2048,"curve":null,"extensions":{"basicConstraints":"CA:TRUE","keyUsage":"Digital Signature, Certificate Sign, CRL Sign","subjectKeyIdentifier":"84:18:CC:85:34:EC:BC:0C:94:94:2E:08:59:9C:C7:B2:10:4E:0A:08","authorityKeyIdentifier":"9C:5F:00:DF:AA:01:D7:30:2B:38:88:A2:B8:6D:4A:9C:F2:11:91:83","authorityInfoAccess":"OCSP - URI:http://ocsp.rootg2.amazontrust.com\nCA Issuers - URI:http://crt.rootg2.amazontrust.com/rootg2.cer","crlDistributionPoints":"Full Name:\n  URI:http://crl.rootg2.amazontrust.com/rootg2.crl\n","certificatePolicies":"Policy: X509v3 Any Policy"},"pem":"-----BEGIN CERTIFICATE-----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\nakcjMS9cmvqtmg5iUaQqqcT5NJ0hGA==\n-----END CERTIFICATE-----\n"}],"protocol":"TLSv1.3","cipher":"TLS_AES_128_GCM_SHA256","cipher_bits":128,"warnings":[],"attempts":[{"address":"108.156.60.16","verified":true,"error":null}],"checked_at":"2026-10-02T17:10:15+00:00","resolver":"Public DNS resolver","scope":"One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan."}