DV SSL/TLS Certificate for ruzehned.cz

Certificate is witin its validity period

Issued by Let's Encrypt (R10)

About the ruzehned.cz DV SSL/TLS Certificate

This certificate with serial number 05:4f:4e:39:2f:80:16:a7:1c:63:89:5f:21:54:78:5c:bc:b1 for ruzehned.cz was issued on by Let's Encrypt.

With 2 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 ruzehned.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): 05:4f:4e:39:2f:80:16:a7:1c:63:89:5f:21:54:78:5c:bc:b1
Serial Number (int): 462547713353568998638332092911644164537521
Serial Number Length: 139 bits, 18 octets

Subject Key Identifier: 46:da:a5:e1:49:ce:07:96:30:fd:08:b1:77:70:2c:f5:98:1d:91:47
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): 0f:b7:29:6b:07:3f:e6:7f:ac:04:be:cb:fa:98:df:4e:db:cf:31:b9
Fingerprint (SHA-256): 1f:b5:5f:52:20:b8:99:45:3b:81:1a:05:61:e7:36:8f:d4:4c:4b:fd:32:fa:ca:2d:8e:ec:8d:4d:21:8a:0c:8d

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

Revocation Information

CRL Distribution Point: http://r10.c.lencr.org/50.crl

Check the revocation status for certificate ruzehned.cz
2
DNS Names
0
Email Addresses
0
IP Addresses

Advanced Certificate Properties

Technical details of the X.509 certificate for ruzehned.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 ruzehned.cz in PEM and ASN.1 format.

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1JJl8MFDWUoUASIbzw49
2+PYtDSJoczHid6ivtuQh1530F2ru+dqos3A53RkonQCYkH20oyn0xqv+q7Lto6k
igIe631CPSdqqkA14glZheQkm3phVxwFBoyR/6aRNgwnqYyJspz7NhvrG6GfSbZm
DCFIG7LYewNNvt3N7BnbtyryCMOa6dY4b0XadIINwlNFm4FjQ4jkfaHkY091xVnk
6NaM3vs0q2awGrHi7TczWNVl935P6KqGhmVLB8gXIjLfNHSvadmXw9CJpOzk+CQa
OHpYvt+WqFaf6ORvuj6eKNMkpMKLqUS9KPqrn1kms5n+awuwR9/2vKaDhGR/UvRk
twIDAQAB
-----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 462547713353568998638332092911644164537521
 . . . . . . . . [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 2025-05-22 23:49:46 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-08-20 23:49:45 +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 'ruzehned.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 26834712298249613328999389223341971124583841181580344402104420272530649129016449918825133274983715585102290670131809637659609188220456301806112791350930755848134179094527356409573864066596079410059842619374972105671196488592236267617989020937140902594755475631428603349802600314595366252825889769494041503610396806295342817721381542713784736077765440629913248158001101891365880011800597905035247197249448566300477492413209830935352634233346468965618568612998835664356874015818475247380401775923775242190305184921741849622709202643400964363220120074872074275676412987200082326278508555085797380441574592343485447431351
 . . . . . . . . . . . . . . . . . . . . [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)
							46daa5e149ce079630fd08b177702cf5981d9147
 . . . . . . . . . . . . . . . . [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 (32 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'ruzehned.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.ruzehned.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 (39 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/50.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 (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007500a442c506496061548f0fd4ea9cfb7a2d26454d87a97f2fdf4559f6274f3a845400000196fa9cb6ff000004030046304402202709d45f9397c13936c89659f65ebafdd250928b0a26af794140bb1d0d1de16e022012f8f0bb476ef34214c993745c9cbb51a37672f304fead5ee7cabfb74d83225a007600ccfb0f6a85710965fe959b53cee9b27c22e9855c0d978db6a97e54c0fe4c0db000000196fa9cb71f0000040300473045022100b560de539c7366885b1275afe3df266d325a2b5f380090768f68a8b20130141c02206cd1ae73b3a6f0d3ad71cdd77714f6603af782df55f2b953892f9d856dcaaf7b
 . . . . [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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