www.byznysakce.cz

Issued by R3

About this certificate

This digital certificate with serial number 04:a0:4e:b3:e8:19:19:63:82:e5:5a:3d:94:cf:97:88:d3:c5 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:a0:4e:b3:e8:19:19:63:82:e5:5a:3d:94:cf:97:88:d3:c5
Serial Number (int): 402998936346707631449951811062355351622597
Serial Number lenght: 139 bits, 18 octets

SubjectKeyId: 30:b2:bb:e1:e1:62:84:df:91:ce:f8:8e:d8:54:2f:18:c3:d8:55:6d
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 7e:68:48:15:11:19:69:84:35:1e:2c:18:54:0b:c5:7e:5f:39:21:6b
Fingerprint (sha256): df:f6:4f:4b:89:6a:16:3f:86:8f:47:13:24:7d:81:a3:f7:fd:59:21:f5:f9:c2:b4:f2:2d:16:6a:38:90:2e:a6

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

ECDSA

Key Size

256

Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature

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
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
event.messorties.fr
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
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
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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
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
www.byznysakce.cz
event.messorties.fr
byznysakce.cz
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
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-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEEd2oY3K/Qelekfgxjsfs1UWjjp3B
cMz6UK4h3v+ehUh9v15VHgj8ITxlIgUFfAVX38wiWW2Kalnpru7B7WrxEg==
-----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 402998936346707631449951811062355351622597
 . . . . . . . . [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 2023-10-07 02:33:46 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2024-01-05 02:33:45 +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 1.2.840.10045.2.1 (ecPublicKey)
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.3.1.7 (prime256v1)
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (520 bits)
				000411dda86372bf41e95e91f8318ec7ecd545a38e9dc170ccfa50ae21deff9e85487dbf5e551e08fc213c652205057c0557dfcc22596d8a6a59e9aeeec1ed6af112
 . . . . . . . . [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 (1 bits)
							0780
 . . . . . . . . . . . . . . . . [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)
							30b2bbe1e16284df91cef88ed8542f18c3d8556d
 . . . . . . . . . . . . . . . . [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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (245 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (242 bytes)
							00f0007600dab6bf6b3fb5b6229f9bc2bb5c6be87091716cbb51848534bda43d3048d7fbab0000018b0832c3ed000004030047304502210094c2a99d5b4e40082a0eb3c213d879defeb3e1da106f011c8ef51e8e060df78b022078c6f7644c9abc140e7c5eb108212a801bbff400cc59a25ac5fd994beb5014b500760076ff883f0ab6fb9551c261ccf587ba34b4a4cdbb29dc68420a9fe6674c5a3a740000018b0832c419000004030047304502205c9548605ca045a7434946cb42122289b0be7096994a7796aabf5ce8840b95f40221009d5ac7988b3e188fcb243ce78b440d6a6138fbbcebb1fe8d4a49ea8935ff06dd
 . . . . [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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