SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
petnik-koupelny.cz
SSL/TLS Certificate
SSL/TLS Certificate for petnik-koupelny.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.petnik-koupelny.cz
- Valid from
- Oct 12, 2026
- Valid until
- Jan 10, 2027 (56 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0671C97F85BB20A207AE57D83B6B1A2D797F
- SHA-256 fingerprint
- AE:2F:BC:B0:E0:F3:C2:48:08:D2:C2:A8:65:55:AB:2F:E8:9D:BA:F0:3E:EE:10:9C:6F:7C:0B:2F:56:59:F2:63
- 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 15, 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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