{"domain":"t-systems.com","port":443,"address":"63.181.161.172","resolved_addresses":["63.181.161.172","63.183.123.42","3.125.164.65"],"verified":true,"verification":"Certificate chain, hostname and dates verified using this server\u2019s CA store.","verification_error":null,"certificate":{"subject":{"C":"DE","ST":"Nordrhein-Westfalen","L":"Bonn","O":"Deutsche Telekom IT GmbH","CN":"t-systems.com"},"issuer":{"C":"DE","O":"Deutsche Telekom Security GmbH","CN":"Telekom Security ServerID OV Class 2 CA"},"serial":"2C85BBC640D52B85E08C253B198AA86E","version":3,"valid_from":"2025-12-01T11:31:45+00:00","valid_to":"2026-12-05T23:59:59+00:00","validity":"valid_period","days_remaining":34,"san":"DNS:t-systems.com, DNS:www.t-systems.com","signature":"RSA-SHA256","sha256":"1E:EC:0D:1B:01:B1:81:F3:AC:21:37:0F:FB:4E:37:16:2C:D0:ED:F6:15:62:9C:B6:61:07:01:D0:C8:AA:36:1A","key_type":"EC","key_bits":256,"curve":"prime256v1","extensions":{"authorityKeyIdentifier":"1C:05:93:B1:7F:A8:34:30:8C:52:E0:96:40:A0:72:A3:10:5D:E0:FF","keyUsage":"Digital Signature, Key Agreement","extendedKeyUsage":"TLS Web Client Authentication, TLS Web Server Authentication","subjectKeyIdentifier":"69:40:2F:0C:AF:63:0B:85:58:94:62:6F:60:C4:E3:1D:C8:4A:83:16","certificatePolicies":"Policy: 2.23.140.1.2.2\n  CPS: http://docs.serverid.telesec.de/cps/serverid.htm","crlDistributionPoints":"Full Name:\n  URI:http://crl.serverid.telesec.de/rl/Telekom_Security_ServerID_OV_Class_2_CA.crl\n","authorityInfoAccess":"OCSP - URI:http://ocsp.serverid.telesec.de/ocspr\nCA Issuers - URI:http://crt.serverid.telesec.de/crt/Telekom_Security_ServerID_OV_Class_2_CA.crt","basicConstraints":"CA:FALSE","subjectAltName":"DNS:t-systems.com, DNS:www.t-systems.com","ct_precert_scts":"Signed Certificate Timestamp:\n    Version   : v1 (0x0)\n    Log ID    : D7:6D:7D:10:D1:A7:F5:77:C2:C7:E9:5F:D7:00:BF:F9:\n                82:C9:33:5A:65:E1:D0:B3:01:73:17:C0:C8:C5:69:77\n    Timestamp : Dec  1 11:31:46.641 2025 GMT\n    Extensions: none\n    Signature : ecdsa-with-SHA256\n                30:46:02:21:00:C5:4F:D7:EF:3F:B8:C9:2F:3E:2F:A6:\n                F8:46:AE:D3:E6:2C:18:1D:8A:BE:FE:64:44:46:16:DE:\n                ED:B2:6F:59:00:02:21:00:8F:1F:67:27:A1:D9:E8:9E:\n                7D:6F:06:B1:3D:CC:2D:D9:98:0D:BA:3B:41:91:D1:89:\n                E1:92:A2:50:D5:02:15:AE\nSigned 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 : Dec  1 11:31:46.636 2025 GMT\n    Extensions: none\n    Signature : ecdsa-with-SHA256\n                30:45:02:20:17:14:AF:5A:9E:72:38:27:32:5E:60:1A:\n                EF:64:31:63:04:1C:1C:8B:A9:AD:E7:0F:1C:D3:9A:0E:\n                B1:8B:68:84:02:21:00:89:D5:45:0C:C7:9C:30:F1:C3:\n                D8:01:B8:F5:A3:7B:8C:CF:E9:3D:53:64:53:DD:A5:56:\n                2C:B4:B2:48:7B:05:C6\nSigned Certificate Timestamp:\n    Version   : v1 (0x0)\n    Log ID    : 94:4E:43:87:FA:EC:C1:EF:81:F3:19:24:26:A8:18:65:\n                01:C7:D3:5F:38:02:01:3F:72:67:7D:55:37:2E:19:D8\n    Timestamp : Dec  1 11:31:46.885 2025 GMT\n    Extensions: none\n    Signature : ecdsa-with-SHA256\n                30:45:02:21:00:F1:2A:80:83:0E:25:04:6B:79:8D:5F:\n                5B:68:6C:B5:C1:7F:83:1D:91:50:1C:FA:C1:29:D9:12:\n                4A:AC:D6:89:AB:02:20:73:56:05:0C:97:31:B7:77:AD:\n                BA:93:C9:86:E5:F9:0C:03:10:51:FE:F3:3E:AB:81:9C:\n                88:B2:27:01:90:A2:D5\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 : Dec  1 11:31:47.049 2025 GMT\n    Extensions: none\n    Signature : ecdsa-with-SHA256\n                30:45:02:21:00:B0:F8:8D:9C:E7:7F:DF:0E:B6:5D:DF:\n                55:AA:3A:2B:1B:44:11:73:E9:38:0C:B9:86:5D:12:E4:\n                F9:44:6E:1F:3D:02:20:72:3D:82:E6:29:77:8C:6A:CD:\n                B3:AA:E6:BF:5F:52:93:C9:8A:F3:C5:77:3D:66:81:02:\n                EB:B6:B7:5A:06:6A:12"},"pem":"-----BEGIN 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CERTIFICATE-----\n"},"chain":[{"subject":{"C":"DE","O":"Deutsche Telekom Security GmbH","CN":"Telekom Security ServerID OV Class 2 CA"},"issuer":{"C":"DE","O":"T-Systems Enterprise Services GmbH","OU":"T-Systems Trust Center","CN":"T-TeleSec GlobalRoot Class 2"},"serial":"0E5D298915C40431A4E1C4CA488B8EA3","version":3,"valid_from":"2022-08-02T09:16:44+00:00","valid_to":"2027-08-02T23:59:59+00:00","validity":"valid_period","days_remaining":274,"san":"","signature":"RSA-SHA256","sha256":"94:4A:CE:96:1D:B3:16:BE:B6:94:E0:1C:30:2C:46:FE:D4:0D:C0:29:17:29:E7:DA:F5:85:50:C3:CB:55:E7:91","key_type":"RSA","key_bits":3072,"curve":null,"extensions":{"keyUsage":"Certificate Sign, CRL Sign","subjectKeyIdentifier":"1C:05:93:B1:7F:A8:34:30:8C:52:E0:96:40:A0:72:A3:10:5D:E0:FF","authorityKeyIdentifier":"BF:59:20:36:00:79:A0:A0:22:6B:8C:D5:F2:61:D2:B8:2C:CB:82:4A","basicConstraints":"CA:TRUE, pathlen:0","extendedKeyUsage":"TLS Web Client Authentication, TLS Web Server 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CERTIFICATE-----\n"},{"subject":{"C":"DE","O":"T-Systems Enterprise Services GmbH","OU":"T-Systems Trust Center","CN":"T-TeleSec GlobalRoot Class 2"},"issuer":{"C":"DE","O":"T-Systems Enterprise Services GmbH","OU":"T-Systems Trust Center","CN":"T-TeleSec GlobalRoot Class 2"},"serial":"01","version":3,"valid_from":"2008-10-01T10:40:14+00:00","valid_to":"2033-10-01T23:59:59+00:00","validity":"valid_period","days_remaining":2526,"san":"","signature":"RSA-SHA256","sha256":"91:E2:F5:78:8D:58:10:EB:A7:BA:58:73:7D:E1:54:8A:8E:CA:CD:01:45:98:BC:0B:14:3E:04:1B:17:05:25:52","key_type":"RSA","key_bits":2048,"curve":null,"extensions":{"basicConstraints":"CA:TRUE","keyUsage":"Certificate Sign, CRL Sign","subjectKeyIdentifier":"BF:59:20:36:00:79:A0:A0:22:6B:8C:D5:F2:61:D2:B8:2C:CB:82:4A"},"pem":"-----BEGIN CERTIFICATE-----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\nBSeOE6Fuwg==\n-----END CERTIFICATE-----\n"}],"protocol":"TLSv1.2","cipher":"ECDHE-ECDSA-AES128-GCM-SHA256","cipher_bits":128,"warnings":[],"attempts":[{"address":"63.181.161.172","verified":true,"error":null}],"checked_at":"2026-11-01T17:23:33+00:00","resolver":"Public DNS resolver","scope":"One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan."}