webmailer.prooptik.de
Issued by Let's Encrypt Authority X3
About this certificate
This digital certificate with serial number 03:0b:6a:43:d3:58:40:f7:b7:00:c8:64:29:f1:88:6c:db:af 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): 03:0b:6a:43:d3:58:40:f7:b7:00:c8:64:29:f1:88:6c:db:afSerial Number (int): 265221214169434397135218972417465321839535
Serial Number lenght: 138 bits, 18 octets
SubjectKeyId: d3:ac:12:e5:36:7d:5a:ef:4d:a3:e6:02:68:df:45:74:39:29:2a:7a
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1
Fingerprint (sha1): fb:74:cf:c0:75:e4:1d:36:c6:7f:e8:8f:af:63:2c:aa:b6:bc:26:47
Fingerprint (sha256): 7c:8e:20:a1:b1:dc:6d:2e:0b:a7:06:b7:ac:87:60:88:a6:ec:58:b4:b7:9f:8f:e7:9c:1b:9e:aa:f5:f4:e0:2f
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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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----- MIIGDjCCBPagAwIBAgISAwtqQ9NYQPe3AMhkKfGIbNuvMA0GCSqGSIb3DQEBCwUA MEoxCzAJBgNVBAYTAlVTMRYwFAYDVQQKEw1MZXQncyBFbmNyeXB0MSMwIQYDVQQD ExpMZXQncyBFbmNyeXB0IEF1dGhvcml0eSBYMzAeFw0xNjA0MTIwMzU4MDBaFw0x NjA3MTEwMzU4MDBaMCAxHjAcBgNVBAMTFXdlYm1haWxlci5wcm9vcHRpay5kZTCC AiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBANEE1r19Tc2IDoZtIYofQO+K F8+w8ON95Y4KIeNlw959c1702ykMFW9q3JfHhKvaOhDcdwUG9TDdRZjtjUfHkJH5 WDr1hS8/43s6DYQWCxFAUmxPtLwVWvFiqv11e83qlJWdfTh4z3qF44DRLXCa9pEw OlOy9J0bQlCxdFNJhvdwxPsWB+tJw6BSujf+Lmu70Z1cJHqEmr6ZC6h6nM2AkdQ9 h8bD5ACsiDfd48MMTxVwDimjOECq0bNUejZy6b9VwtiiARCT8bfvJC7S85ESzXP4 xQqmeLVjZybFU2SHSYKOAr/C1UsgyaWcvuvce2FWJaNzpzYhjklxR/3ulyYO8dsk O/qYCph+hcD60zfsr0Q/Fe9WV0TlgKzafnHDpoxx6TUfcdQv5GtLGLtE30FlZfmV ykNtnujWSB71iiuKnIQ+m0THurxKyfsbmL2A2GyKyHTmm7Ct21GcRv6ZYsyGfnjY mhrCe6ZvcBCcZJ38BuzP1c+XcQRaJn9TZ7K4ljQ5mXoNWx984WCAg9ZxeGjIOUD9 NErpTjL00XZcal6aI0lAsiy5T3ECdu5DBZUhV4ZUZKHnR18FtDdhXYINS4pp4q+D kDXXFaZjcgmp4A56zgRhA6tXxyRHWlrx0qe34qDsU6bhpIfwPaufiw9bjP3BoV02 u3xM40L83708MvSnNCf3AgMBAAGjggIWMIICEjAOBgNVHQ8BAf8EBAMCBaAwHQYD VR0lBBYwFAYIKwYBBQUHAwEGCCsGAQUFBwMCMAwGA1UdEwEB/wQCMAAwHQYDVR0O BBYEFNOsEuU2fVrvTaPmAmjfRXQ5KSp6MB8GA1UdIwQYMBaAFKhKamMEfd265tE5 t6ZFZe/zqOyhMHAGCCsGAQUFBwEBBGQwYjAvBggrBgEFBQcwAYYjaHR0cDovL29j c3AuaW50LXgzLmxldHNlbmNyeXB0Lm9yZy8wLwYIKwYBBQUHMAKGI2h0dHA6Ly9j ZXJ0LmludC14My5sZXRzZW5jcnlwdC5vcmcvMCAGA1UdEQQZMBeCFXdlYm1haWxl ci5wcm9vcHRpay5kZTCB/gYDVR0gBIH2MIHzMAgGBmeBDAECATCB5gYLKwYBBAGC 3xMBAQEwgdYwJgYIKwYBBQUHAgEWGmh0dHA6Ly9jcHMubGV0c2VuY3J5cHQub3Jn MIGrBggrBgEFBQcCAjCBngyBm1RoaXMgQ2VydGlmaWNhdGUgbWF5IG9ubHkgYmUg cmVsaWVkIHVwb24gYnkgUmVseWluZyBQYXJ0aWVzIGFuZCBvbmx5IGluIGFjY29y ZGFuY2Ugd2l0aCB0aGUgQ2VydGlmaWNhdGUgUG9saWN5IGZvdW5kIGF0IGh0dHBz Oi8vbGV0c2VuY3J5cHQub3JnL3JlcG9zaXRvcnkvMA0GCSqGSIb3DQEBCwUAA4IB AQATjF1BYZ2gS2q/Op8GRH1Tohf2vOd0GZEr03IX+PWKXsQKjKz75oN7lCp/8vnV rS8UwfckScSEX+nrwkGlm+IcSgiMh74hoaHwKAMP9CvVHYuA8EcMtTkS0jscxC15 RVlgciHv8oqycN5cWKfzkL/azQbvs3+CO3+6LWS//IoO3qjZbU01yALcQc2EE1rv H9cWWZiOFbxUWSE3XvfCRcoqOabbZC0zeKB5SWvExMIQWiJGN5hyK+16d0IfX8dU gv+E54QBz50AJz0amSyirG/eZFIUUFpkWxe2QOODyEevLs225kaLxbCDatOVIUlm UTogUHJH/DdhpF4uc1R9v2Tx -----END CERTIFICATE-----
Public Key (PEM)
-----BEGIN PUBLIC KEY----- MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA0QTWvX1NzYgOhm0hih9A 74oXz7Dw433ljgoh42XD3n1zXvTbKQwVb2rcl8eEq9o6ENx3BQb1MN1FmO2NR8eQ kflYOvWFLz/jezoNhBYLEUBSbE+0vBVa8WKq/XV7zeqUlZ19OHjPeoXjgNEtcJr2 kTA6U7L0nRtCULF0U0mG93DE+xYH60nDoFK6N/4ua7vRnVwkeoSavpkLqHqczYCR 1D2HxsPkAKyIN93jwwxPFXAOKaM4QKrRs1R6NnLpv1XC2KIBEJPxt+8kLtLzkRLN c/jFCqZ4tWNnJsVTZIdJgo4Cv8LVSyDJpZy+69x7YVYlo3OnNiGOSXFH/e6XJg7x 2yQ7+pgKmH6FwPrTN+yvRD8V71ZXROWArNp+ccOmjHHpNR9x1C/ka0sYu0TfQWVl +ZXKQ22e6NZIHvWKK4qchD6bRMe6vErJ+xuYvYDYbIrIdOabsK3bUZxG/plizIZ+ eNiaGsJ7pm9wEJxknfwG7M/Vz5dxBFomf1NnsriWNDmZeg1bH3zhYICD1nF4aMg5 QP00SulOMvTRdlxqXpojSUCyLLlPcQJ27kMFlSFXhlRkoedHXwW0N2Fdgg1Limni r4OQNdcVpmNyCangDnrOBGEDq1fHJEdaWvHSp7fioOxTpuGkh/A9q5+LD1uM/cGh XTa7fEzjQvzfvTwy9Kc0J/cCAwEAAQ== -----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 265221214169434397135218972417465321839535 . . . . . . . . [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 2016-04-12 03:58:00 +0000 UTC . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-07-11 03:58:00 +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 852722722323768085521558933859136438782757454201128235147023295341518071343477421513135230899887906556005085076461904045204290102517549281646661373520581124318248765115115516495422558774717229421367281310361811649547535171481512496597682143984952170780161953495561991655067260196853620269463583859447818556170500441835492002268014787294539987168267553817861513860041707094800052117134666154613630289372013294778023781940311394208195376790606160217643284364610255407634954646598722189849805806515339776286981967312913486219292026440259973632225077407362444935024097509510624489538520878495578108040044010281800727795027340581570069343783811208753110100177970075553969972244175437122943822348447288683095050317862659823144788490617439728631649702915410969846230128508012145983036014243654196501774861063933754289793773450525489751100704411188549201209224294615363831175631976580340230680415369332752561720809540909754485282702580949061979148125147990786905568047451754577123175841199470513023895853082428137033362670571210544882450587072200090446836246285662311377219790376935905560764759884281376933506832059499391040292929136783876197542322961901827072116927304245839509063886455886122183557315819525947298376570916395394177046947831 . . . . . . . . . . . . . . . . . . . . [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) d3ac12e5367d5aef4da3e60268df457439292a7a . . . . . . . . . . . . . . . . [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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