DV SSL/TLS Certificate for www.kulina.cz

Certificate is witin its validity period

Issued by ZeroSSL (ZeroSSL ECC Domain Secure Site CA)

About the www.kulina.cz DV SSL/TLS Certificate

This certificate with serial number a8:4a:81:a4:ae:1d:5b:de:a2:ad:28:2f:d2:2b:76:c2 for www.kulina.cz was issued on by ZeroSSL.

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 www.kulina.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)

ZeroSSL

Organization: ZeroSSL
Country: AT

This X.509 certificate will expire on

Certificate Details

Serial Number (hex): a8:4a:81:a4:ae:1d:5b:de:a2:ad:28:2f:d2:2b:76:c2
Serial Number (int): 223697162737540851697118958688467121858
Serial Number Length: 128 bits, 16 octets

Subject Key Identifier: 1a:cf:8e:42:aa:69:56:4d:7d:b9:d2:11:42:da:50:b1:7a:9e:8f:1c
Authority Key Identifier: 0f:6b:e6:4b:ce:39:47:ae:f6:7e:90:1e:79:f0:30:91:92:c8:5f:a3

Fingerprint (SHA-1): fc:84:b4:2c:8a:73:67:2a:ac:c6:98:61:cb:32:d8:2d:bb:62:f6:de
Fingerprint (SHA-256): 8d:09:4e:d6:b7:fb:47:0b:34:e4:20:3c:76:50:c9:bd:e2:a7:36:c5:cc:80:68:39:9b:43:b8:1c:87:b1:70:5a

Issuing Certificate URL: http://zerossl.crt.sectigo.com/ZeroSSLECCDomainSecureSiteCA.crt

Revocation Information

OCSP Server: http://zerossl.ocsp.sectigo.com

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

Advanced Certificate Properties

Technical details of the X.509 certificate for www.kulina.cz

Public Key Algorithm
ECDSA
Key Size
384
Signature Algorithm
ECDSA with SHA384
Key Usage
Digital Signature
Extended Key Usages
Server Authentication
Client Authentication
Extensions
9
CA Certificate
This is not a CA certificate

Subject Alternative Names

X.509 Certificate

The complete raw X.509 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-----
MHYwEAYHKoZIzj0CAQYFK4EEACIDYgAEnMJoRn4BQGbaXaK6Waqel2QTKA2fD5Cp
aFjgVG3vaYRZegCiocXsFhDAU/DIX1Y5e2sD3xAwZ4qSC6jlJy8CCB9j/16Gy46L
6He+WGaFoyZi4AOO+gkd9/O7KvSbSUov
-----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 223697162737540851697118958688467121858
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.4.3.3
 . . . . . . . . [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 'AT'
 . . . . . . . . . . . . [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 'ZeroSSL'
 . . . . . . . . . . . . [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 'ZeroSSL ECC Domain Secure Site CA'
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-06-06 00:00:00 +0000 UTC
 . . . . . . . . . . . . [c:0|t:23|false] UTCTime 2025-09-04 23:59:59 +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 '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
 . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.132.0.34
 . . . . . . . . . . . . [c:0|t:3|false] BIT STRING (776 bits)
				00049cc268467e014066da5da2ba59aa9e976413280d9f0f90a96858e0546def6984597a00a2a1c5ec1610c053f0c85f56397b6b03df1030678a920ba8e5272f02081f63ff5e86cb8e8be877be586685a32662e0038efa091df7f3bb2af49b494a2f
 . . . . . . . . [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 2.5.29.35
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (24 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:0|false] OtherName 0f6be64bce3947aef67e901e79f0309192c85fa3
 . . . . . . . . . . . . . . . . [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)
							1acf8e42aa69564d7db9d21142da50b17a9e8f1c
 . . . . . . . . . . . . . . . . [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 (1 bits)
							0780
 . . . . . . . . . . . . . . . . [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 2.5.29.37
 . . . . . . . . . . . . . . . . . . . . [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 2.5.29.32
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (66 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.4.1.6449.1.2.2.78
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:22|false] IA5String 'https://sectigo.com/CPS'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [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 1.3.6.1.5.5.7.1.1
 . . . . . . . . . . . . . . . . . . . . [c:0|t:4|false] OCTET STRING (124 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://zerossl.crt.sectigo.com/ZeroSSLECCDomainSecureSiteCA.crt'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.3.6.1.5.5.7.48.1
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:6|false] IA5String 'http://zerossl.ocsp.sectigo.com'
 . . . . . . . . . . . . . . . . [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)
							00ef007500dddcca3495d7e11605e79532fac79ff83d1c50dfdb003a1412760a2cacbbc82a000001974414e590000004030046304402207ec1b54ce5a951754c26dbea7059c4482f431527ec0bcdbd3a95b11475e1b1b80220228042fea208986ba570dbe4937bd067933638436793f60a36d35f5e4d195b670076000de1f2302bd30dc140621209ea552efc47747cb1d7e930ef0e421eb47e4eaa34000001974414e57e0000040300473045022100e30634e20914fc5ef38152b7c89626125d1d94e934d20ef176cd65ba97d6377402207dd4b0b60ad75903dfd1483d6d47498a5c4ad3714efd2688988ced48ba9164cc
 . . . . . . . . . . . . . . . . [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 (28 bytes)
 . . . . . . . . . . . . . . . . . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'www.kulina.cz'
 . . . . . . . . . . . . . . . . . . . . . . . . . . . . [c:2|t:2|false] IA5String 'kulina.cz'
 . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . [c:0|t:6|false] OBJECT IDENTIFIER 1.2.840.10045.4.3.3
 . . . . [c:0|t:3|false] BIT STRING (832 bits)
 . . . . . . . . [c:0|t:16|true] SEQUENCE, SEQUENCE OF 
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 33153595166115028276420575713816407781979044936749900739245824230127354390667702695390801504047323366686955776863654
 . . . . . . . . . . . . [c:0|t:2|false] INTEGER 31569297665580238962411343899285033110884893065318768759820107952306017590704023896865988406288834964429800816385606