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
- May 8, 2025
- Valid until
- May 8, 2026 (expired 127 days ago)
- Public key
- RSA 4096-bit
- Serial
- 0DB94D2C2C8021EE8B37114441A3E9B94ECD2B44
- SHA-256 fingerprint
- E8:7E:40:01:D8:47:58:B4:40:84:CA:E0:20:64:E6:A6:B6:4F:F0:05:66:C3:C1:5A:D3:54:D0:6B:05:1C:D5:0D
- Chain
- s23.zenbox.pl
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
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Uptime
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DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
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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