SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
jana-sonntagova.cz
SSL/TLS Certificate
SSL/TLS Certificate for jana-sonntagova.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- jana-sonntagova.cz
- Valid from
- Oct 5, 2026
- Valid until
- Jan 3, 2027 (51 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 058B590F8AC339EECA615B8B9254BBCACA01
- SHA-256 fingerprint
- 0E:3B:9D:FF:C8:F6:D2:1B:30:E3:D8:19:AE:5D:12:F4:34:E9:A8:23:AA:4E:07:56:FF:92:C4:E8:6B:2A:24:4E
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
We've observed 1 previous certificate for this host. This certificate has been served since Oct 10, 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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