webmailer.prooptik.de
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:51:c3:c1:30:25:0c:33:8d:d7:6f:b3:44:0f:b1:4d:31:e2 was issued on by Let's Encrypt.
This certificate has already expired and will cause a warning or error message in the browser it's still listed on this site to allow you to look back on previously issued certificates. If we have found any compliance issues with this certificate they will be shown below. I hope this certificate review is providing you the detailed information in a simple form you where looking for.
We have idenified some issues with this certificate:
- Subscriber Certificate: commonName is deprecated. (BRs: 7.1.4.2.2)
Certificate Subject
CN=webmailer.prooptik.de
Let's Encrypt
Organization:
Let's Encrypt
Country:
US
This certificate has expire since
Certificate Details
Serial Number (hex): 03:51:c3:c1:30:25:0c:33:8d:d7:6f:b3:44:0f:b1:4d:31:e2Serial Number (int): 289159932064839390430823980711719973237218
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: 21:7c:15:29:98:e3:e6:8c:1a:0b:5e:99:ad:b3:e8:e3:bc:88:32:26
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 9b:9e:08:b0:49:43:b9:cd:2d:ec:1d:92:52:43:90:83:80:2a:2a:4d
Fingerprint (sha256): fa:d5:87:41:1c:b6:4c:e8:16:2d:f7:51:f3:a3:b2:4d:23:f3:9a:e7:19:47:ec:5a:71:47:53:db:8a:ee:78:d8
Issuing Certificate URL: http://cert.int-x3.letsencrypt.org/
Revocation information
OCSP Server: http://ocsp.int-x3.letsencrypt.org/Check the revocation status for certificate webmailer.prooptik.de
1
DNS Names
0
Email Addresses
0
IP Addresses
Advanced Certificate Properties
Tehnical certificate details for webmailer.prooptik.de
Public Key Algorithm
RSA
Key Size
4096
Signature Algorithm
SHA256 with RSA
Key Usage
Digital Signature
Key Encipherment
Extended Key Usages
Server Authentication
Client Authentication
Extensions
8 extensions
No
unhandled critical extensions
CA Certificate
This is not a CA certificate
Subject Alternative Names
webmailer.prooptik.de
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webmailer.prooptik.de
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Certificate
The complete raw certificate details for webmailer.prooptik.de in PEM and ASN.1 format.
Certificate (PEM)
-----BEGIN CERTIFICATE----- MIIGDjCCBPagAwIBAgISA1HDwTAlDDON12+zRA+xTTHiMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xNjEwMjUwNzIyMDBaFw0x NzAxMjMwNzIyMDBaMCAxHjAcBgNVBAMTFXdlYm1haWxlci5wcm9vcHRpay5kZTCC AiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBALpRA4A+lqFK3H8RrzbBgPLc LxKWxFFxuTBjX4euXp+3zkR/Pt4xrMk8TGhy+tOfa0mpZlDDEvgfAkURu7y0f1he QeB8gSDvsrxa4sAdr4uPvmdYS225uHCHxJSeORiuKf1kCPHpo1Zr8jZ0fBW2z6KV YI8vHSLpKF53oHbmc3ovdDKpBUhAeyePneSfHC+0Fq7jmtnDYwO4LXDXF5N2EICf d3FSW/Gu6jPqJMniuc3ete++xKfxY/AoICvxsdnlLq6mZd1+yWzRej3xYy6XQdJ8 zrSoBBTLT1YrZGWnLUQlLErqZdNgifrxHT032SdyFf97eQ9X4XTw+T2l0uxgNqsM YXuG6SVoxQ5q0Hap9OZYuB3ueZ3K83zrMZrBLEE/0CwoB+SQo98quU86L8jDwPWg yFRDEeIzS7n0ZNcFpB6f+AqQIgy90/xB8X30qPU4VCmbP+yLCEaYf/fyEXh9vX87 H9r+foL0MSttzlgTi0jsnOBNtQORmep2mFbqxGVwLqWWS66YpM3a0lT8Id+2sT4a K7psnbnAE/T+msy0x/H1ZZS0tdSp1ilyCb9hH5WF5QDU5V51KZcxLbClyi95g1id WThnI6L5p1x8ZonnnCaxjh+hoI6Ynn4emo2A3yOyBDbEST4l5LOby43ShruCWxIa tqLzbHjw9T/grgO09k8DAgMBAAGjggIWMIICEjAOBgNVHQ8BAf8EBAMCBaAwHQYD VR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0O BBYEFCF8FSmY4+aMGgtema2z6OO8iDImMB8GA1UdIwQYMBaAFKhKamMEfd265tE5 t6ZFZe/zqOyhMHAGCCsGAQUFBwEBBGQwYjAvBggrBgEFBQcwAYYjaHR0cDovL29j c3AuaW50LXgzLmxldHNlbmNyeXB0Lm9yZy8wLwYIKwYBBQUHMAKGI2h0dHA6Ly9j ZXJ0LmludC14My5sZXRzZW5jcnlwdC5vcmcvMCAGA1UdEQQZMBeCFXdlYm1haWxl ci5wcm9vcHRpay5kZTCB/gYDVR0gBIH2MIHzMAgGBmeBDAECATCB5gYLKwYBBAGC 3xMBAQEwgdYwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIGrBggrBgEFBQcCAjCBngyBm1RoaXMgQ2VydGlmaWNhdGUgbWF5IG9ubHkgYmUg cmVsaWVkIHVwb24gYnkgUmVseWluZyBQYXJ0aWVzIGFuZCBvbmx5IGluIGFjY29y ZGFuY2Ugd2l0aCB0aGUgQ2VydGlmaWNhdGUgUG9saWN5IGZvdW5kIGF0IGh0dHBz Oi8vbGV0c2VuY3J5cHQub3JnL3JlcG9zaXRvcnkvMA0GCSqGSIb3DQEBCwUAA4IB AQAUzrbaBxlsttbiNG3rXLnYcJr5TksUXfE4IKTPuBztmFDYW6zYv99R2aAd0L7r MInph+FOPmK3vlW3Fa68J1v1A2Mp+1T7UbbvBS4eJXmvSfwM+ScJ9u+/q2pWLn8k u6m4BhezeoyTk3CaZlnWapPcbd+DgqzyQIAvNmkP1zuls2ITovxCM087UQUoe4+Z AT/ds8Yf5KcrV4SJSpkJhrMg9BhaELqA9xrTsz+J3HZDBCeyLTJ3IxhsX3G/SSZ+ fPNiO1qq1cfJA+Y0fTjfmqtTtGLI9Bjrsj8xSn0sH0zZs6l/rKT7ZRhEuYznMd/2 NpkBxB92oc05iWGQAsqxv3g8 -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAulEDgD6WoUrcfxGvNsGA 8twvEpbEUXG5MGNfh65en7fORH8+3jGsyTxMaHL6059rSalmUMMS+B8CRRG7vLR/ WF5B4HyBIO+yvFriwB2vi4++Z1hLbbm4cIfElJ45GK4p/WQI8emjVmvyNnR8FbbP opVgjy8dIukoXnegduZzei90MqkFSEB7J4+d5J8cL7QWruOa2cNjA7gtcNcXk3YQ gJ93cVJb8a7qM+okyeK5zd61777Ep/Fj8CggK/Gx2eUurqZl3X7JbNF6PfFjLpdB 0nzOtKgEFMtPVitkZactRCUsSupl02CJ+vEdPTfZJ3IV/3t5D1fhdPD5PaXS7GA2 qwxhe4bpJWjFDmrQdqn05li4He55ncrzfOsxmsEsQT/QLCgH5JCj3yq5TzovyMPA 9aDIVEMR4jNLufRk1wWkHp/4CpAiDL3T/EHxffSo9ThUKZs/7IsIRph/9/IReH29 fzsf2v5+gvQxK23OWBOLSOyc4E21A5GZ6naYVurEZXAupZZLrpikzdrSVPwh37ax PhorumyducAT9P6azLTH8fVllLS11KnWKXIJv2EflYXlANTlXnUplzEtsKXKL3mD WJ1ZOGcjovmnXHxmieecJrGOH6Ggjpiefh6ajYDfI7IENsRJPiXks5vLjdKGu4Jb Ehq2ovNsePD1P+CuA7T2TwMCAwEAAQ== -----END PUBLIC KEY-----
ASN.1 decoded
[c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:2|t:0|true] OtherName . . . . . . . . . . . . [c:0|t:2|false] INTEGER 2 . . . . . . . . [c:0|t:2|false] INTEGER 289159932064839390430823980711719973237218 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.6 (countryName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'US' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.10 (organizationName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt' . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'Let's Encrypt Authority X3' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-10-25 07:22:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2017-01-23 07:22:00 +0000 UTC . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:17|true] SET, SET OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.4.3 (commonName) . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'webmailer.prooptik.de' . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.1 (rsaEncryption) . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (4208 bits) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 760104839468590206943799881626886061091479487448780305497458671622732423980852869458605044147463835096350608523025995212226918590630591368688596605996455513564197645429282861329532409833074104056528700220982592011095955056595193725033708811514701218248038312029476741607509461095929888440107555819322906611667892282788039712343630667860057458553253427248415172270425138405022669089855841892850719601183933986698347597366196498166429271101105405810472819890039159350772433811573226584055346018568899998748706487121584516048233060567596399620662760018098345787346580081982595594208679785179595645540010933063447418646040660358855937781214899034445354323967766952524364804969759703021712270548052204552378331356949558427582060135653882079403711352275021869988056858189138750419509828927447330660043750888191067953697908532361013519889123274225712703861101131748488270414384947541676700467761777363352527912890372631826051356792724146564249336005128591483314760675109112017574865636527043190125870385735352699329886085513384601276608265449640668835943474611521230475110239668439332949320488635958104963417857001821867795769621698462396787925911770821108366615243510025823618668487719712479170448145964821061724796957669502679201552420611 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 65537 . . . . . . . . [c:2|t:3|true] ORAddress . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.15 (keyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (4 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (3 bits) 05a0 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.37 (extKeyUsage) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.1 (serverAuth) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2 (clientAuth) . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19 (basicConstraints) . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.14 (subjectKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes) 217c152998e3e68c1a0b5e99adb3e8e3bc883226 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35 (authorityKeyIdentifier) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName a84a6a63047dddbae6d139b7a64565eff3a8eca1 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1 (authorityInfoAccess) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (100 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1 (ocsp) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://ocsp.int-x3.letsencrypt.org/' . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2 (caIssuers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://cert.int-x3.letsencrypt.org/' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17 (subjectAltName) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (25 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'webmailer.prooptik.de' . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32 (certificatePolicies) . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (246 bytes) . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.23.140.1.2.1 (Domain Validation Certificates Policy) . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.44947.1.1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.1 (cps) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'http://cps.letsencrypt.org' . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.2.2 (unotice) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:12|false] UTF8String 'This Certificate may only be relied upon by Relying Parties and only in accordance with the Certificate Policy found at https://letsencrypt.org/repository/' . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11 (sha256WithRSAEncryption) . . . . . . . . [c:0|t:5|false] NULL . . . . [c:0|t:3|false] BIT STRING (2048 bits) 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