SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
zelena-hora.cz
SSL/TLS Certificate
SSL/TLS Certificate for zelena-hora.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.zelena-hora.cz
- Valid from
- Jul 25, 2026
- Valid until
- Oct 23, 2026 (84 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0572EFD7241D51EDC8DB61DD94DB755081DB
- SHA-256 fingerprint
- CD:FD:0A:89:34:6F:AB:40:2A:AA:F9:0B:33:F7:AB:1E:32:45:7F:08:0B:A4:53:4C:14:6E:5F:3D:61:23:33:38
- Chain
- YR2 → Root YR → ISRG Root X1
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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