www.kulina.cz

Issued by R3

About this certificate

This digital certificate with serial number 03:fc:ac:a5:72:cc:2f:7b:f5:ab:1e:98:5c:72:90:3b:da:59 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=www.kulina.cz

Let's Encrypt

Organization: Let's Encrypt
Country: US

This certificate has expire since

Certificate Details

Serial Number (hex): 03:fc:ac:a5:72:cc:2f:7b:f5:ab:1e:98:5c:72:90:3b:da:59
Serial Number (int): 347317500531985832132014417096686406720089
Serial Number lenght: 138 bits, 18 octets

SubjectKeyId: 76:2f:35:bd:b0:13:a0:f9:db:75:88:e4:2e:66:01:34:f5:9e:a5:5c
AuthorityKeyId: 14:2e:b3:17:b7:58:56:cb:ae:50:09:40:e6:1f:af:9d:8b:14:c2:c6

Fingerprint (sha1): 8f:c1:14:da:49:cd:e4:1c:4c:7d:7a:b8:38:12:0c:e1:88:4d:30:a9
Fingerprint (sha256): 92:b1:0d:0b:d7:97:dd:19:1d:00:5f:e7:3f:7b:30:dd:83:c8:be:2e:60:d2:25:e2:fb:4d:51:1c:b1:d9:14:d3

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

Revocation information

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

Check the revocation status for certificate www.kulina.cz

2

DNS Names

0

Email Addresses

0

IP Addresses

Advanced Certificate Properties

Tehnical certificate details for www.kulina.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

kulina.cz
www.kulina.cz

Other certificates including the domain name kulina.cz

(limited to 100 certificates)
www.kulina.cz
dc.kulina.cz
www.permet.cz
sklad.kulina.cz
img.kulina.cz
www.kulina.cz
kulina.cz
www.kulina.cz
www.kulina.cz
www.permet.cz
dc.kulina.cz
www.permet.cz
vanoce.kulina.cz
www.permet.cz
www.permet.cz
www.permet.cz
www.permet.cz
www.permet.cz
kulina.cz
www.permet.cz
kulina.cz
kulina.cz
www.permet.cz
www.kulina.cz
www.kulina.cz
www.permet.cz
www.kulina.cz
www.permet.cz
www.kulina.cz
www.permet.cz
www.kulina.cz
www.kulina.cz
www.kulina.cz
www.kulina.cz
kulina.cz
vanoce.kulina.cz
www.permet.cz
kulina.cz
www.permet.cz
www.permet.cz
www.permet.cz
kulina.cz
kulina.cz
www.permet.cz
www.permet.cz
www.permet.cz
sklad.kulina.cz
kulina.cz
www.permet.cz
kulina.cz
www.kulina.cz
www.kulina.cz

Certificate

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

Certificate (PEM)

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

Public Key (PEM)

-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAESpDNytuwn5LpenbBD/RwtgMjHUxS
LSlq3X9MFi7YEZyaaQ9JFO78ST7Wsm3WGuZ7hkPs9TymflW4JYeKVlvRBA==
-----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 347317500531985832132014417096686406720089
 . . . . . . . . [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 2023-02-14 01:15:08 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2023-05-15 01:15:07 +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.kulina.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)
				00044a90cdcadbb09f92e97a76c10ff470b603231d4c522d296add7f4c162ed8119c9a690f4914eefc493ed6b26dd61ae67b8643ecf53ca67e55b825878a565bd104
 . . . . . . . . [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)
							762f35bdb013a0f9db7588e42e660134f59ea55c
 . . . . . . . . . . . . . . . . [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 (28 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'kulina.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.kulina.cz'
 . . . . . . . . . . . . . . . . [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 (69 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 1.3.6.1.4.1.11129.2.4.2
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (244 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (241 bytes)
							00ef007500b73efb24df9c4dba75f239c5ba58f46c5dfc42cf7a9f35c49e1d098125edb499000001864db4531800000403004630440220168e377a9cb8601681565930408ee35a7293addb8aff19dc6a3ab32034ad5859022062b58f9c3bc62e2273559c2a902771d2863b7602c4b4297fdc2f43e5174ff0ed0076007a328c54d8b72db620ea38e0521ee98416703213854d3bd22bc13a57a352eb52000001864db453280000040300473045022100cdffaae607b58432deb651b6e075a2a4129a77ec8c121be73a659d62f8d7465b02207fb6f0c6d923905608d465123bed904ae0cf8755ebc06183bb4fb42c9ac0202f
 . . . . [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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