Issued by PostSignum Public CA 2

About this certificate

This digital certificate with serial number 0a:8f:1e was issued on by Česká pošta, s.p. [IČ 47114983] .

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Cerificate errors/warnings *beta

  • ERROR: localityName is required for [EV] certificates
  • ERROR: businessCategory is required for [EV] certificates
  • ERROR: jurisdictionCountryName is required for [EV] certificates
  • ERROR: localityName or stateOrProvinceName is required if organizationName is set
  • ERROR: stateOrProvinceName is required if organizationName is set
  • ERROR: Certificate doesn't contain any subjectAltName
  • ERROR: Certificate CN is not listed in subjectAltName
  • ERROR: Certificate should not contain a wildcard

České hudební nástroje, spol. s r. o. [IČ 25657275]

Company registration number: D286969
Organization: České hudební nástroje, spol. s r. o. [IČ 25657275]
Country: CZ

Česká pošta, s.p. [IČ 47114983]

Organization: Česká pošta, s.p. [IČ 47114983]
Country: CZ

Time since certificate expired

This certificate has expire since

Certificate Details

Serial Number (hex): 0a:8f:1e
Serial Number (int): 691998
Serial Number lenght: 20 bits, 3 octets

SubjectKeyId: 0c:fc:2c:45:39:93:58:0b:70:c8:67:30:42:51:f1:07:ef:fc:46:3d
AuthorityKeyId: 48:ef:3e:d4:ea:89:89:a3:e9:e2:3f:db:ef:8c:42:b1:0a:f8:c8:d1

Fingerprint (sha1): a9:c7:a8:76:a4:34:ea:29:a7:13:fc:0a:b7:ba:63:9c:06:47:36:61
Fingerprint (sha256): 51:9f:fa:c4:72:0f:ba:28:3f:5b:cc:5d:dc:b4:2a:bd:01:fc:a1:fd:cd:b9:5a:91:90:b1:cd:a2:d2:26:24:7e

Issuing Certificate URL: http://www.postsignum.cz/crt/pspublicca2.crt
Issuing Certificate URL: http://www2.postsignum.cz/crt/pspublicca2.crt
Issuing Certificate URL: http://postsignum.ttc.cz/crt/pspublicca2.crt

Revocation information

OCSP Server: http://ocsp.postsignum.cz/OCSP/VCA2/OCSP_public/
CRL Distribution Point: http://www.postsignum.cz/crl/pspublicca2.crl
CRL Distribution Point: http://www2.postsignum.cz/crl/pspublicca2.crl
CRL Distribution Point: http://postsignum.ttc.cz/crl/pspublicca2.crl

Check the revocation status for the current certificate on *.chn.cz
DNS Names
Email Addresses
IP Addresses

Advanced Certificate Properties

Technical details about this certificate

Public Key Algorithm


Key Size


Signature Algorithm

SHA256 with RSA

Key Usage

Digital Signature
Key Encipherment

Extended Key Usages

Server Authentication
Client Authentication


8 extensions
No unhandled critical extensions

CA Certificate

This is not a CA certificate

Subject Alternative Names