www.byznysakce.cz

Issued by R3

About this certificate

This digital certificate with serial number 04:19:42:82:a6:3d:85:59:4f:84:3e:18:b3:3a:76:59:7b:cb was issued on by Let's Encrypt.

With 9 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:
  • DV certificate contains a subject common name, this is not recommended. If certificate policy 2.23.140.1.2.1 (CA/B BR domain validated) is included, only country and/or common name is allowed in SubjectDN. (BRs: 7.1.2.7.2)
  • Subscriber certificates use of Subject Key Identifier is NOT RECOMMENDED (BRs v2: 7.1.2.7.6)
  • Subscriber Certificate: commonName is NOT RECOMMENDED. (BRs: 7.1.2.7.1)

Certificate Subject

CN=www.byznysakce.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 04:19:42:82:a6:3d:85:59:4f:84:3e:18:b3:3a:76:59:7b:cb
Serial Number (int): 357044610318132043744041319878738094685131
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 0c:b4:2f:29:cf:b7:52:20:52:cc:42:8b:d6:ca:2f:46:46:47:df:a0
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 8a:6a:fa:bb:fb:41:02:7d:1e:eb:d7:ab:64:98:2e:70:0d:ae:5f:51
Fingerprint (sha256): 1a:54:e7:28:bd:76:80:55:14:40:84:83:87:e1:c7:94:d8:11:02:60:13:23:cc:f2:44:14:e0:9d:1b:0a:58:c3

Issuing Certificate URL: http://r3.i.lencr.org/

Revocation information

OCSP Server: http://r3.o.lencr.org

Check the revocation status for certificate www.byznysakce.cz

9

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.byznysakce.cz

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

9 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names

event.messorties.fr
events.dsmglass.co.tz
events.londonlads.org.uk
events.prato.be
events.silverside.com
events.wir-network.ch
www.byznysakce.cz
www.connect-london.com
www.dekrachtvanzuid.mkblimburg.nl

Other certificates including the domain name byznysakce.cz

(limited to 100 certificates)
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
event.messorties.fr
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
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www.byznysakce.cz
www.byznysakce.cz
event.messorties.fr
www.byznysakce.cz
www.byznysakce.cz
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www.byznysakce.cz
www.byznysakce.cz
event.messorties.fr
www.byznysakce.cz
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www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
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www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
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event.messorties.fr
byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
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www.byznysakce.cz
www.byznysakce.cz
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www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz

Certificate

The complete raw certificate details for www.byznysakce.cz in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAr2Mge94HdpG+E7jyply9
F/nimrANc7BA/uqDxeFI6wTHyYXK1m7SoqP2B0BIsdlIKAfOrAzrijjzWdArxsae
TEIJcxViS1oKDBu497Iysa84cODwzK4DIFqF21kFj/cj93mGBEizhf0YBHpK55yh
jcK1HoPoz/5kYTgpvRCOOXurch8m9Z7OGl/9dmQZ9lkRfK1sxUM67oKQ8dXswqZh
O7msVQGa2fS2Yblj/CYOBfCSnHqh+vMqsDlQH1xa45Z2WPCSH9wUS50ffjKLKSwX
tHV+KqP18krIWFkOO7IEkuSwd18V+kvekZjr5sIBeN6CjWilyBtzT9FVJqrYy/+S
qQIDAQAB
-----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 357044610318132043744041319878738094685131
 . . . . . . . . [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 'R3'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-12-06 03:04:42 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-03-05 03:04:41 +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 'www.byznysakce.cz'
 . . . . . . . . [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 22140584660381998743531738377872493483783503954816263211921420823193680130259315792503502514024298485243727636134949273373745891984939683435379881617658805542392038582454554059154850757476811756700760811973839646599609565650746618081366095335652130108978286021162974510964648142381181565871020770185391193538621590140671262986771157688211706378375784720289306802418632644162417804161696349711968027764490791404433031424034672103187000644456496711984548213181277427200165044602649433891521169420679154357758606517274594691962812526991136777029509996221818727968468197188424609071174384181310702739384804026452178604713
 . . . . . . . . . . . . . . . . . . . . [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)
							0cb42f29cfb7522052cc428bd6ca2f464647dfa0
 . . . . . . . . . . . . . . . . [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 142eb317b75856cbae500940e61faf9d8b14c2c6
 . . . . . . . . . . . . . . . . [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 (73 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://r3.o.lencr.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://r3.i.lencr.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 (214 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'event.messorties.fr'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'events.dsmglass.co.tz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'events.londonlads.org.uk'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'events.prato.be'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'events.silverside.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'events.wir-network.ch'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.byznysakce.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.connect-london.com'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.dekrachtvanzuid.mkblimburg.nl'
 . . . . . . . . . . . . . . . . [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 (12 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 1.3.6.1.4.1.11129.2.4.3 (CT Precertificate Poison)
 . . . . . . . . . . . . . . . . . . . . [c:0|t:1|false] BOOLEAN true
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (2 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:5|false] NULL 
 . . . . [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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