{"domain":"mail.mastertel.ru","port":443,"address":"109.73.45.104","resolved_addresses":["109.73.45.104"],"verified":true,"verification":"Certificate chain, hostname and dates verified using this server\u2019s CA store.","verification_error":null,"certificate":{"subject":{"CN":"*.mastertel.ru"},"issuer":{"C":"BE","O":"GlobalSign nv-sa","CN":"GlobalSign GCC R3 DV TLS CA 2020"},"serial":"01E4F8037D8FB59B46F83446","version":3,"valid_from":"2026-07-02T14:44:03+00:00","valid_to":"2027-01-17T14:44:03+00:00","validity":"valid_period","days_remaining":74,"san":"DNS:*.mastertel.ru, DNS:mastertel.ru","signature":"RSA-SHA256","sha256":"EB:D3:CF:53:9B:9C:DF:5B:59:6A:33:3A:2C:FD:D9:AB:EF:01:E5:E9:D1:87:64:6B:3D:77:EB:72:1D:3F:CC:23","key_type":"RSA","key_bits":2048,"curve":null,"extensions":{"keyUsage":"Digital Signature, Key Encipherment","basicConstraints":"CA:FALSE","authorityInfoAccess":"CA Issuers - URI:http://secure.globalsign.com/cacert/gsgccr3dvtlsca2020.crt\nOCSP - URI:http://ocsp.globalsign.com/gsgccr3dvtlsca2020","certificatePolicies":"Policy: 1.3.6.1.4.1.4146.1.10\n  CPS: https://www.globalsign.com/repository/\nPolicy: 2.23.140.1.2.1","crlDistributionPoints":"Full Name:\n  URI:http://crl.globalsign.com/gsgccr3dvtlsca2020.crl\n","subjectAltName":"DNS:*.mastertel.ru, DNS:mastertel.ru","extendedKeyUsage":"TLS Web Server Authentication, TLS Web Client Authentication","authorityKeyIdentifier":"0D:98:C0:73:7F:AB:BD:BD:D9:47:4B:49:AD:0A:4A:0C:AC:3E:C7:7C","subjectKeyIdentifier":"D1:40:2C:35:F2:EA:7E:71:04:C6:65:0F:58:6B:0F:83:04:E8:70:E9","ct_precert_scts":"Signed 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 : Jul  2 14:44:07.221 2026 GMT\n    Extensions: none\n    Signature : ecdsa-with-SHA256\n                30:46:02:21:00:92:8C:A1:E2:AF:BF:15:53:B7:D5:79:\n                1B:8A:74:E2:22:6A:41:C8:E3:85:65:0C:18:AA:95:18:\n                59:C8:FE:69:F5:02:21:00:E8:65:7F:AE:AF:63:81:7F:\n                EA:6C:E5:7E:4F:8B:91:41:02:FF:CA:A1:63:1D:EF:A3:\n                CE:B2:2D:C5:6E:B8:BD:99\nSigned 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 : Jul  2 14:44:06.581 2026 GMT\n    Extensions: none\n    Signature : ecdsa-with-SHA256\n                30:46:02:21:00:BF:03:5D:B7:4D:0C:21:E0:A5:D4:EB:\n                C9:F2:7F:B7:3B:DC:AA:A7:8C:1B:FC:B3:DF:54:55:2C:\n                F7:8E:E7:A2:E4:02:21:00:A5:28:FE:99:B9:22:7F:6B:\n                E4:CF:B2:21:A3:AC:B6:52:2E:7C:F7:40:AD:A4:4A:76:\n                F0:86:41:C3:5D:D8:1E:D2\nSigned Certificate Timestamp:\n    Version   : v1 (0x0)\n    Log ID    : 60:4C:9A:AF:7A:7F:77:5F:01:D4:06:FC:92:0D:C8:99:\n                EB:0B:1C:7D:F8:C9:52:1B:FA:FA:17:77:3B:97:8B:C9\n    Timestamp : Jul  2 14:44:07.035 2026 GMT\n    Extensions: none\n    Signature : ecdsa-with-SHA256\n                30:46:02:21:00:96:5C:41:01:FE:F8:89:86:E3:C5:55:\n                2E:C6:5A:36:F9:0C:0C:51:22:FB:3C:60:8A:D5:54:85:\n                9F:3E:EC:7F:05:02:21:00:F1:B9:EA:0B:0B:DD:F8:E4:\n                96:A5:2E:E3:FA:05:E1:21:66:D6:11:12:C1:C9:86:61:\n                93:4E:5A:1A:0F:1A:4B:78"},"pem":"-----BEGIN 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CERTIFICATE-----\n"},"chain":[{"subject":{"C":"BE","O":"GlobalSign nv-sa","CN":"GlobalSign GCC R3 DV TLS CA 2020"},"issuer":{"OU":"GlobalSign Root CA - R3","O":"GlobalSign","CN":"GlobalSign"},"serial":"77BD0E0742D5D9E9D049D774D02A6F9A","version":3,"valid_from":"2020-07-28T00:00:00+00:00","valid_to":"2029-03-18T00:00:00+00:00","validity":"valid_period","days_remaining":864,"san":"","signature":"RSA-SHA256","sha256":"76:25:38:43:95:09:C4:11:C4:37:D3:C5:67:56:3E:13:78:67:12:81:FC:4A:14:64:AD:D0:31:87:08:43:67:6E","key_type":"RSA","key_bits":2048,"curve":null,"extensions":{"keyUsage":"Digital Signature, Certificate Sign, CRL Sign","extendedKeyUsage":"TLS Web Server Authentication, TLS Web Client Authentication","basicConstraints":"CA:TRUE, pathlen:0","subjectKeyIdentifier":"0D:98:C0:73:7F:AB:BD:BD:D9:47:4B:49:AD:0A:4A:0C:AC:3E:C7:7C","authorityKeyIdentifier":"8F:F0:4B:7F:A8:2E:45:24:AE:4D:50:FA:63:9A:8B:DE:E2:DD:1B:BC","authorityInfoAccess":"OCSP - URI:http://ocsp2.globalsign.com/rootr3\nCA Issuers - URI:http://secure.globalsign.com/cacert/root-r3.crt","crlDistributionPoints":"Full Name:\n  URI:http://crl.globalsign.com/root-r3.crl\n","certificatePolicies":"Policy: X509v3 Any Policy\n  CPS: https://www.globalsign.com/repository/"},"pem":"-----BEGIN CERTIFICATE-----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\nD/fayQ==\n-----END CERTIFICATE-----\n"},{"subject":{"OU":"GlobalSign Root CA - R3","O":"GlobalSign","CN":"GlobalSign"},"issuer":{"OU":"GlobalSign Root CA - R3","O":"GlobalSign","CN":"GlobalSign"},"serial":"04000000000121585308A2","version":3,"valid_from":"2009-03-18T10:00:00+00:00","valid_to":"2029-03-18T10:00:00+00:00","validity":"valid_period","days_remaining":864,"san":"","signature":"RSA-SHA256","sha256":"CB:B5:22:D7:B7:F1:27:AD:6A:01:13:86:5B:DF:1C:D4:10:2E:7D:07:59:AF:63:5A:7C:F4:72:0D:C9:63:C5:3B","key_type":"RSA","key_bits":2048,"curve":null,"extensions":{"keyUsage":"Certificate Sign, CRL Sign","basicConstraints":"CA:TRUE","subjectKeyIdentifier":"8F:F0:4B:7F:A8:2E:45:24:AE:4D:50:FA:63:9A:8B:DE:E2:DD:1B:BC"},"pem":"-----BEGIN CERTIFICATE-----\nMIIDXzCCAkegAwIBAgILBAAAAAABIVhTCKIwDQYJKoZIhvcNAQELBQAwTDEgMB4G\nA1UECxMXR2xvYmFsU2lnbiBSb290IENBIC0gUjMxEzARBgNVBAoTCkdsb2JhbFNp\nZ24xEzARBgNVBAMTCkdsb2JhbFNpZ24wHhcNMDkwMzE4MTAwMDAwWhcNMjkwMzE4\nMTAwMDAwWjBMMSAwHgYDVQQLExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMzETMBEG\nA1UEChMKR2xvYmFsU2lnbjETMBEGA1UEAxMKR2xvYmFsU2lnbjCCASIwDQYJKoZI\nhvcNAQEBBQADggEPADCCAQoCggEBAMwldpB5BngiFvXAg7aEyiie/QV2EcWtiHL8\nRgJDx7KKnQRfJMsuS+FggkbhUqsMgUdwbN1k0ev1LKMPgj0MK66X17YUhhB5uzsT\ngHeMCOFJ0mpiLx9e+pZo34knlTifBtc+ycsmWQ1z3rDI6SYOgxXG71uL0gRgykmm\nKPZpO/bLyCiR5Z2KYVc3rHQU3HTgOu5yLy6c+9C7v/U9AOEGM+iCK65TpjoWc4zd\nQQ4gOsC0p6Hpsk+QLjJg6VfLuQSSaGjlOCZgdbKfd/+RFO+uIEn8rUAVSNECMWEZ\nXriX7613t2Saer9fwRPvm2L7DWzgVGkWqQPabumDk3F2xmmFghcCAwEAAaNCMEAw\nDgYDVR0PAQH/BAQDAgEGMA8GA1UdEwEB/wQFMAMBAf8wHQYDVR0OBBYEFI/wS3+o\nLkUkrk1Q+mOai97i3Ru8MA0GCSqGSIb3DQEBCwUAA4IBAQBLQNvAUKr+yAzv95ZU\nRUm7lgAJQayzE4aGKAczymvmdLm6AC2upArT9fHxD4q/c2dKg8dEe3jgr25sbwMp\njjM5RcOO5LlXbKr8EpbsU8Yt5CRsuZRj+9xTaGdWPoO4zzUhw8lo/s7awlOqzJCK\n6fBdRoyV3XpYKBovHd7NADdBj+1EbddTKJd+82cEHhXXipa0095MJ6RMG3NzdvQX\nmcIfeg7jLQitChws/zyrVQ4PkX4268NXSb7hLi18YIvDQVETI53O9zJrlAGomecs\nMx86OyXShkDOOyyGeMlhLxS67ttVb9+E7gUJTb0o2HLO02JQZR7rkpeDMdmztcpH\nWD9f\n-----END CERTIFICATE-----\n"}],"protocol":"TLSv1.3","cipher":"TLS_AES_128_GCM_SHA256","cipher_bits":128,"warnings":[],"attempts":[{"address":"109.73.45.104","verified":true,"error":null}],"checked_at":"2026-11-04T13:08:06+00:00","resolver":"Public DNS resolver","scope":"One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan."}