SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
zslogopedicka-tnv.cz
SSL/TLS Certificate
SSL/TLS Certificate for zslogopedicka-tnv.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- www.zslogopedicka-tnv.cz
- Valid from
- Oct 11, 2026
- Valid until
- Jan 9, 2027 (58 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 065A0D16EB77837BBBEBB0BB504CC4068843
- SHA-256 fingerprint
- 56:C6:F0:78:D8:43:93:3C:A7:A1:12:7B:E0:9C:55:43:91:53:7D:AA:BE:27:B9:00:7B:81:8D:A0:93:C9:7F:FF
- 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.
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Uptime
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DNS changes
We watch NS, MX, CAA, CNAME, TXT 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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