mail.blek.ch

Issued by Let's Encrypt Authority X3

About this certificate

This digital certificate with serial number 03:c4:65:ae:e3:6c:13:68:05:7e:7e:0c:d5:29:2b:44:c1:4e was issued on by Let's Encrypt.

With 2 subject alternative names this certificate can be used to secure multiple fqdn's. 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=mail.blek.ch

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:c4:65:ae:e3:6c:13:68:05:7e:7e:0c:d5:29:2b:44:c1:4e
Serial Number (int): 328167361811681967891750555594099809108302
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 0b:39:ae:3f:7c:a0:d5:8d:a5:6a:04:f2:1b:2f:68:6f:c0:8e:bd:0d
AuthorityKeyId: a8:4a:6a:63:04:7d:dd:ba:e6:d1:39:b7:a6:45:65:ef:f3:a8:ec:a1

Fingerprint (sha1): a3:80:8f:06:4d:22:25:cf:ea:de:20:6a:04:e4:3a:8d:ed:b5:94:04
Fingerprint (sha256): 07:38:a1:b7:ef:98:9e:81:cd:44:1c:24:87:90:2a:cc:2a:8b:30:2e:c7:c4:ae:f6:80:5a:51:d1:e3:33:04:0d

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 mail.blek.ch

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for mail.blek.ch

Public Key Algorithm

RSA

Key Size

2048

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

mail.blek.ch
rc.blek.ch

Other certificates including the domain name blek.ch

(limited to 100 certificates)
archives.blek.ch
benevoles.balelec.ch
webcams.blek.ch
*.blek.ch
*.blek.ch
intranet.blek.ch
mail.blek.ch
public.balelec.ch
stats.blek.ch
gallery.blek.ch
files.blek.ch
mail.blek.ch
mail.blek.ch
auth.blek.ch
webcams.blek.ch
gallery.blek.ch
public.balelec.ch
auth.blek.ch
mail.blek.ch
archives.blek.ch
public.balelec.ch
webcams.blek.ch
public.balelec.ch
webcams.blek.ch
public.balelec.ch
files.blek.ch
*.blek.ch
gallery.blek.ch
stats.blek.ch
gallery.blek.ch
auth.blek.ch
mail.blek.ch
files.blek.ch
auth.blek.ch
mail.blek.ch
gallery.blek.ch
public.balelec.ch
gallery.blek.ch
public.balelec.ch
*.srv.blek.ch
benevoles.balelec.ch
files.blek.ch
archives.blek.ch
auth.blek.ch
archives.blek.ch
stats.blek.ch
intranet.blek.ch
auth.blek.ch
files.blek.ch
files.blek.ch
auth.blek.ch
gallery.blek.ch
intranet.blek.ch
mail.blek.ch
cdn.blek.ch
auth.blek.ch
webcams.blek.ch
archives.blek.ch
intranet.blek.ch
public.balelec.ch
gallery.blek.ch
auth.blek.ch
files.blek.ch
webcams.blek.ch
mail.blek.ch
benevoles.balelec.ch
mail.blek.ch
*.srv.blek.ch
webcams.blek.ch
webcams.blek.ch
intranet.blek.ch
stats.blek.ch
intranet.blek.ch
auth.blek.ch
auth.blek.ch
public.balelec.ch
archives.blek.ch
archives.blek.ch
webcams.blek.ch
files.blek.ch
public.balelec.ch
mail.blek.ch
gallery.blek.ch
gallery.blek.ch
gallery.blek.ch
archives.blek.ch
public.balelec.ch
webcams.blek.ch
webcams.blek.ch
intranet.blek.ch
mail.blek.ch
public.balelec.ch
public.balelec.ch
public.balelec.ch
auth.balelec.ch
archives.blek.ch
*.blek.ch
public.balelec.ch
auth.blek.ch
archives.blek.ch

Certificate

The complete raw certificate details for mail.blek.ch in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApZEmgNqAmn+VQke8CmQA
LCAuRTRigmEoftUz8oUyf99zoxzHRD5liSTICxOvWOl0+rLgnHJHMQUZdQV6jd88
IQnMjzdjUt8oE/IjLa1JU7OPGv6ZhKJX1inBvdtQfVi4+O88EPhisERSCV9X5tIm
86FQPSUERT+FMjJ55I+8vSgiu58nXmyyFU1Gu8HB5xsqZXH8WkJ1tHFNEmCNbRMn
5EBEylbVH+WXbqNF+vUGrm7l7rb9J7vjtTXAfvBcOGMS+MEIOKWi9S+hNaWMNcTP
elf4w+PqKLPAlH4oKzhT+37t8cGzprDIYJ4ub+PGGYYsGBlX2gdT2+hKVX3ohAeU
sQIDAQAB
-----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 328167361811681967891750555594099809108302
 . . . . . . . . [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 2018-02-28 10:45:54 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2018-05-29 10:45:54 +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 'mail.blek.ch'
 . . . . . . . . [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 (2160 bits)
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:2|false] INTEGER 20900896651125290222082578483252676575918318713334319058995268664093919094663874852693619845903498368555631884510588740478374827742310686958612469431832357088680230078009996319229355117213251856972730942533016130398290591292713213355813144772839301094278127416821475507441099795853528356027076218527436604929200920127019555043995411263887391553666161865273554279093230246485903105229739158070447068083995725996842556280268301519297303581086406754901100095339444897225899892554481035782255917838629127235500624994027881937777738477694144182843156103422941264774646251141917164305526976929395880195199609187866922947761
 . . . . . . . . . . . . . . . . . . . . [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)
							0b39ae3f7ca0d58da56a04f21b2f686fc08ebd0d
 . . . . . . . . . . . . . . . . [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 (99 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 (28 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'mail.blek.ch'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'rc.blek.ch'
 . . . . . . . . . . . . . . . . [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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