webmailer.prooptik.de

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:a6:08:16:89:51:31:d6:4d:dd:92:40:67:57:5d:a1:57:59 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:a6:08:16:89:51:31:d6:4d:dd:92:40:67:57:5d:a1:57:59
Serial Number (int): 317834481543776712675233332491539852646233
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: d0:5b:f2:5b:37:a1:8d:37:3d:90:f9:7f:92:28:1d:85:aa:9d:90:d3
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): 7c:75:d5:5e:4d:e9:db:b3:81:ad:63:f0:7c:dd:cf:46:96:30:c0:5f
Fingerprint (sha256): e9:3c:a0:e8:b2:4f:73:e9:26:c9:58:3c:9e:d2:83:60:1d:a8:3a:be:c8:8e:c8:bd:ca:94:9f:7e:3d:b8:53:60

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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Certificate

The complete raw certificate details for webmailer.prooptik.de in PEM and ASN.1 format.

Certificate (PEM)

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Public Key (PEM)

-----BEGIN PUBLIC KEY-----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-----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 317834481543776712675233332491539852646233
 . . . . . . . . [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 2016-06-13 10:04:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2016-09-11 10:04:00 +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 867919972343862062197796108362235191007803178855664073865211029532233271885914004624149497557671547232767651617409416688771819668533897410208391205174715908814927882919706249401657871903292790742866389842803080929478695680824480707806478925684670825165825527208241545749384947082788207750402288593571501053252954702368655917833865907756092004460866284651422189995545781511679113049177255936554835133803218412097343546212463163892841765602757068561303408220396419490984394725596285244639219395729818439769431494359666222118679031567591306964351874675704048715231326047565953086410299300069099232054458740626680080002701142023929560354328840024447306937736028502580610594718307708084141701881442921079483734666741923698592425680978562402843560978539234498300283410493035527351185213557823738942557655783012122730689547981798937143566698901426417723702866459273857095498930606864335263921008512305565265205136867120366053264615115783626266252933760878804091654865899942340964098418364444849319229814682722943009209884354209822877465043251281220601541628385909529585429234494216305864382123606304460036950704499466497638549353963831757213689832518551402566760401314627705364437442700180259805546693516943264953833206838196309107703323779
 . . . . . . . . . . . . . . . . . . . . [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)
							d05bf25b37a18d373d90f97f92281d85aa9d90d3
 . . . . . . . . . . . . . . . . [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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