SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

kb.cz

SSL/TLS Certificate

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SSL/TLS Certificate for kb.cz

Valid
Issued by (CA)
DigiCert Inc
Subject
www.kb.cz
Valid from
Jul 16, 2026
Valid until
Jan 30, 2027 (84 days remaining)
Public key
EC 384-bit
Serial
046CE46002DA8DA99C36FE73A4428D9B
SHA-256 fingerprint
D7:A0:25:25:A6:15:D0:E5:C2:3C:31:DA:52:B1:04:56:7B:89:2C:8F:F5:AB:35:62:0B:49:A5:82:53:97:D3:D8
Chain
DigiCert Global G3 TLS ECC SHA384 2020 CA1 → DigiCert Global Root G3
Subject Alternative Names (2)
kb.cz, www.kb.cz

Certificate Authority Authorization (CAA)

The serving CA (DigiCert Inc) is not among the authorities this domain's CAA records authorize (ica.cz, quovadisglobal.com, symantec.com, trust-provider.com). This can indicate a misconfiguration or an unexpected issuance.

This certificate has been served since Aug 26, 2026.

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Uptime

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DNS changes

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TLS certificate

We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.

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