SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
jan-sobotka.info
SSL/TLS Certificate
SSL/TLS Certificate for jan-sobotka.info
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- jan-sobotka.info
- Valid from
- Oct 2, 2026
- Valid until
- Dec 31, 2026 (72 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 05F7D46AC02D796E977A92673C1997EBB7BC
- SHA-256 fingerprint
- 8F:84:4A:14:F9:BE:B2:21:70:F6:04:19:1E:77:72:AA:9E:88:19:3C:CA:68:A3:74:1F:CC:32:CC:6B:CF:4A:0A
- 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.
We've observed 1 previous certificate for this host. This certificate has been served since Oct 7, 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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