webmailer.prooptik.de
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:c6:44:02:1c:84:2e:be:03:67:71:5a:fb:fd:19:a2:fa:cb 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:c6:44:02:1c:84:2e:be:03:67:71:5a:fb:fd:19:a2:fa:cbSerial Number (int): 328803164912313699431195042011894870375115
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: c5:5c:6f:3c:f5:a4:a0:30:61:33:e6:bb:2c:e5:ae:2e:b1:ae:01:03
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): 8e:01:9b:e6:53:56:26:50:79:6e:62:59:6f:2e:63:df:03:c3:8c:70
Fingerprint (sha256): 58:8f:88:8e:bb:e5:3e:6a:6b:10:97:13:8f:70:24:ed:2d:50:36:99:a9:a1:59:6f:d9:ad:47:88:5c:de:67:8c
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----- MIIGDjCCBPagAwIBAgISA8ZEAhyELr4DZ3Fa+/0ZovrLMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xNjA4MjIwOTE4MDBaFw0x NjExMjAwOTE4MDBaMCAxHjAcBgNVBAMTFXdlYm1haWxlci5wcm9vcHRpay5kZTCC AiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAORpafGqjHOLQD7nwnJyiCRW g4PwoTuBjdz/YhZQlc0EVvmfDZ8DwQxNfJLvqnwbxvYJ7mOaRB1CEI/dYhalyxLt wQGPxOpjPJtuo2tURYZwsSIpbCYIk6cvmT+8ofjoJdUxoohP7i1x7oy9Nk/pkMk9 Wj2KAXL5bcdmypvRX0TfNAgt1AQgqI1it7JGmzf1inNFeK5tzLyIzoFjtjZP7FC9 ReY51um17rl+RcvKz/t+yvsjawRwN5YqJWb+JT8i4rZtoKH64iBL96CwiXORfvwK ZN1SjBooj7heutPLdBYiiv1HpIbOsIo+H7nLljM8TdHvqEZ5YLc0FJFHEvHcUusp SkE561QYPthiqDKD+yPQVcSDRb81DnjglnDwuhuceuzAa1hA9b9DBOFF2WQYcCoE bnPlKdeIw5ftfQA6RBLxaNjddkMZg/rnQm1ajcgx1CRZSWxdHT8jM5/QxVjJJ/wi zmx5rRLdQPQTaHvRy4fKk7mqH6gIEo3xw8N+6ZH+XEbztvwb+QVvR8+aPqundCHb UxxHwUH5ridnkiyXpRWUJo/R8zITJK514XDYfYfOyXoIpejmOqkfNcd0eDnJtTcB KRwCkwxeascdbxlLoo2ZmqVRix0Nf4s1XtJ6naDtCPXKWbm6udz1EQoQCtfvgrmg lRl3vTQLyxVUabTiM6DjAgMBAAGjggIWMIICEjAOBgNVHQ8BAf8EBAMCBaAwHQYD VR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0O BBYEFMVcbzz1pKAwYTPmuyzlri6xrgEDMB8GA1UdIwQYMBaAFKhKamMEfd265tE5 t6ZFZe/zqOyhMHAGCCsGAQUFBwEBBGQwYjAvBggrBgEFBQcwAYYjaHR0cDovL29j c3AuaW50LXgzLmxldHNlbmNyeXB0Lm9yZy8wLwYIKwYBBQUHMAKGI2h0dHA6Ly9j ZXJ0LmludC14My5sZXRzZW5jcnlwdC5vcmcvMCAGA1UdEQQZMBeCFXdlYm1haWxl ci5wcm9vcHRpay5kZTCB/gYDVR0gBIH2MIHzMAgGBmeBDAECATCB5gYLKwYBBAGC 3xMBAQEwgdYwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIGrBggrBgEFBQcCAjCBngyBm1RoaXMgQ2VydGlmaWNhdGUgbWF5IG9ubHkgYmUg cmVsaWVkIHVwb24gYnkgUmVseWluZyBQYXJ0aWVzIGFuZCBvbmx5IGluIGFjY29y ZGFuY2Ugd2l0aCB0aGUgQ2VydGlmaWNhdGUgUG9saWN5IGZvdW5kIGF0IGh0dHBz Oi8vbGV0c2VuY3J5cHQub3JnL3JlcG9zaXRvcnkvMA0GCSqGSIb3DQEBCwUAA4IB AQBMoU7GpIKEFHb4zmcvmwOMa00QTXL/9+BRUJEh98toUrRonlh+bPP3n64uW7l8 DztQQTSIazuWMwGdPk4Wotuu9NlhfPDfmBuFmqx0odZoLhTjx9gYQWdw2Xl3M8mY f/8ByYUxEXop4gDkIc07j0UH3ip4l83iXlx3vm+tCbqpijvzCBBExHSoNBYrF4Pz qtjX3jzKhcfjVEzKIloG+Jod+PK30rvjcQwWLYVWlXFrxAc3zSrHC2yfRFGXF+uS GcbQ0uKeaWsLe8j5d4DzPcbSkieb78a2eOOeI392j6/VkMNbikdgLvrbwwlBvX0a aG6I4954ZsylbLZhCbEPP8Eu -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA5Glp8aqMc4tAPufCcnKI JFaDg/ChO4GN3P9iFlCVzQRW+Z8NnwPBDE18ku+qfBvG9gnuY5pEHUIQj91iFqXL Eu3BAY/E6mM8m26ja1RFhnCxIilsJgiTpy+ZP7yh+Ogl1TGiiE/uLXHujL02T+mQ yT1aPYoBcvltx2bKm9FfRN80CC3UBCCojWK3skabN/WKc0V4rm3MvIjOgWO2Nk/s UL1F5jnW6bXuuX5Fy8rP+37K+yNrBHA3liolZv4lPyLitm2gofriIEv3oLCJc5F+ /Apk3VKMGiiPuF6608t0FiKK/Uekhs6wij4fucuWMzxN0e+oRnlgtzQUkUcS8dxS 6ylKQTnrVBg+2GKoMoP7I9BVxINFvzUOeOCWcPC6G5x67MBrWED1v0ME4UXZZBhw KgRuc+Up14jDl+19ADpEEvFo2N12QxmD+udCbVqNyDHUJFlJbF0dPyMzn9DFWMkn /CLObHmtEt1A9BNoe9HLh8qTuaofqAgSjfHDw37pkf5cRvO2/Bv5BW9Hz5o+q6d0 IdtTHEfBQfmuJ2eSLJelFZQmj9HzMhMkrnXhcNh9h87Jegil6OY6qR81x3R4Ocm1 NwEpHAKTDF5qxx1vGUuijZmapVGLHQ1/izVe0nqdoO0I9cpZubq53PURChAK1++C uaCVGXe9NAvLFVRptOIzoOMCAwEAAQ== -----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 328803164912313699431195042011894870375115 . . . . . . . . [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 2016-08-22 09:18:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-11-20 09:18:00 +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 931838734080773282001135922666284883055243098551127057561170826834511501317826229153798481489451797755508209039777171212500064649760476875198813576682596923942186820863981698227415014394876205226867035464259678814703246549420828497440411575512419794828173786224830099818683184127304576707383690754853818200467823785227027212495393538139363909583474371258624013799101615008632075263438847925252256574146036987608836402992608569000762310011755109585944803809185756348545644231277494072669125998063831118350293856461737222858148115227554675329368617627789886296321071640875377000043821071593047296057282509849881180774003240548057915557284910858176298316888325178693037407511948221726261637974057640098139952038990335503386765520155660556706346405899879014267086262248626536357884293986084238720717675746005912148144970281080443568435545158079890892241515081341628593363517218624678106450192699678560635259828308646606069733744694107185713020587985670444302867399746037850074316079474840316024693308999361454543024247457215652755372328762997209538315132935503754392339521072572350800237603529366003241815885281105185620672334131360825637868349815884762419339883132575165943186599656350129290139384373164405164548239795247335212395503843 . . . . . . . . . . . . . . . . . . . . [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) c55c6f3cf5a4a0306133e6bb2ce5ae2eb1ae0103 . . . . . . . . . . . . . . . . [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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