SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
kopos-technik.cz
SSL/TLS Certificate
SSL/TLS Certificate for kopos-technik.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- kopos-technik.cz
- Valid from
- May 27, 2026
- Valid until
- Aug 25, 2026 (34 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06EF141BD94CED94C3A7E0D68DF751FA80FD
- SHA-256 fingerprint
- E3:73:81:95:6D:BA:BF:99:3D:5C:BC:B1:6E:61:3C:C8:8C:42:56:1A:BC:26:82:D2:76:42:AB:FC:FA:4A:20:0F
- Chain
- R12 → 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
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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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