SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
jan-piatkowski.pl
SSL/TLS Certificate
SSL/TLS Certificate for jan-piatkowski.pl
Self-signed- Issued by (CA)
- s23.zenbox.pl
- Subject
- s23.zenbox.pl
- Valid from
- Sep 25, 2026
- Valid until
- Sep 25, 2027 (359 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 792CADF37970577D8816C005BBF3DA5F68BE19B7
- SHA-256 fingerprint
- A6:28:2A:F8:08:C0:F8:A4:C8:0E:21:E7:F8:99:9A:A1:5C:7E:E9:94:F8:BF:F9:3A:CE:0E:83:28:11:51:8A:DE
- Chain
- s23.zenbox.pl
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Sep 12, 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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