DV SSL/TLS Certificate for flirtkontakt.cz

Certificate is witin its validity period

Issued by Let's Encrypt (R10)

About the flirtkontakt.cz DV SSL/TLS Certificate

This certificate with serial number 05:d4:74:5b:b4:0e:3f:f0:38:40:8c:fb:39:6b:e2:cb:62:7d for flirtkontakt.cz was issued on by Let's Encrypt.

With 3 subject alternative names, this certificate can be used to secure multiple FQDNs. This DV SSL/TLS Certificate is currently within its validity period but we haven't checked the revocation status of this certificate, you can do this simply on revocationcheck.com. We have found some issues with the compliance of this certificate, they are be shown below. We hope this DV SSL/TLS Certificate review for flirtkontakt.cz provides you with the detailed information you were looking for.


We have identified some issues with this certificate:
  • 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)

Let's Encrypt

Organization: Let's Encrypt
Country: US

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): 05:d4:74:5b:b4:0e:3f:f0:38:40:8c:fb:39:6b:e2:cb:62:7d
Serial Number (int): 507855958044528075293885054907440624788093
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: ef:bb:be:32:54:8a:5f:af:c9:2e:4c:f1:6b:98:a0:4c:77:d0:46:a4
Authority Key Identifier: bb:bc:c3:47:a5:e4:bc:a9:c6:c3:a4:72:0c:10:8d:a2:35:e1:c8:e8

Fingerprint (SHA-1): 29:5d:f1:fa:93:55:88:02:2e:31:52:e3:75:c0:5e:80:be:53:a5:3d
Fingerprint (SHA-256): 1b:0e:b8:86:ce:02:8e:b1:1b:17:f1:d4:44:75:2b:cd:42:37:8a:4b:80:07:61:9f:ee:28:2a:84:3e:2c:79:1e

Issuing Certificate URL: http://r10.i.lencr.org/

Revocation Information

CRL Distribution Point: http://r10.c.lencr.org/126.crl

Check the revocation status for certificate flirtkontakt.cz
3
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for flirtkontakt.cz

Public Key Algorithm
RSA
Key Size
2048
Signature Algorithm
SHA256 with RSA
Key Usage
Key Encipherment
Digital Signature
Extended Key Usages
Server Authentication
Client Authentication
Extensions
10
CA Certificate
This is not a CA certificate

Subject Alternative Names

X.509 Certificate

The complete raw X.509 certificate details for flirtkontakt.cz in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAucemmYg1RzpuH+XY6VQJ
RcCn6CVW4vXPqEaeeKIYNAXIiBMnAlEmis99Z6UtAWDunvLv1prbOqomiMzLs9gc
UmWqWssW/LbUThNdPJG85HpLPhiW76vT9IE+3J73oAJrBd9mH4HWvfdnPdJxQNpF
ycVpW3rf8zEtbgE0ALrjfPiG0IUo9FrlriWDfijWyNVf4ZDlliIGL507WU9HQzja
qGc8n/77evxl/ZCNtel0We0jejA8UsCdi7Vo/u/4sbQsshr/Lk2v33m34ZfB1Ue5
cB1gdxuggV6VuSMQgpkEYA9nlN20yNZ9KEpvLIByDT18a9S0FdNEcUaT33EDMtp0
2QIDAQAB
-----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 507855958044528075293885054907440624788093
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'R10'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-05-24 23:19:46 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-08-22 23:19:45 +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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:19|false] PrintableString 'flirtkontakt.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
 . . . . . . . . . . . . . . . . [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 23452537887780556323632502275847344080822818170651884059527378350455583319082048260786677620004558184990092630573354340988031033415483720422553943400148734969392012166932503451373965954716400100025724818203469681042851513977861529651895666310290435250462951315015553888919026079921860731487592842557549426463065166430954069255572099177036967322053881199359267440196177934380943269674999040820142830698208307534177786368837348020812112220364818212398640852161984847046790009034708171693720256231097226840157497125110829455312425623480004157036347867797415527871010840543658646265339746709497504829975449090422495409369
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.3.2
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.19
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (22 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (20 bytes)
							efbbbe32548a5fafc92e4cf16b98a04c77d046a4
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.35
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName bbbcc347a5e4bca9c6c3a4720c108da235e1c8e8
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (39 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.2
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r10.i.lencr.org/'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.17
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (62 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.beta.flirtkontakt.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String '*.flirtkontakt.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'flirtkontakt.cz'
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 2.5.29.31
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (40 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|true] OtherName 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://r10.c.lencr.org/126.crl'
 . . . . . . . . . . . . . . . . [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)
							00f0007600dddcca3495d7e11605e79532fac79ff83d1c50dfdb003a1412760a2cacbbc82a0000019704cdf99f0000040300473045022100cd225b3ab665ec6bacbfcf491e283ffba7602a1a99282119110c6ce04c10602a022065325843a501f90ac2deb21c5f466fe7795d187db35a0d19a281033fb7c8b856007600ed3c4bd6e806c2a4a20057dbcb24e23801df512fedc486c5700f20ddb73e3fe00000019704ce01220000040300473045022100c2f2b1e55561a619ff6791e16672f93ccd38676bfbde128fd934c0038b12225502203a4c40516f0804902e9eba25f66d6db93683222f80e6215bec8fbafbeb2f6398
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.113549.1.1.11
 . . . . . . . . [c:0|t:5|false] NULL []
 . . . . [c:0|t:3|false] BIT STRING (2048 bits)
		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