SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
potapko.cz
SSL/TLS Certificate
SSL/TLS Certificate for potapko.cz
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- www.potapko.cz
- Valid from
- Jul 27, 2026
- Valid until
- Feb 10, 2027 (139 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 79F1517619F8D4E540BA926D7B27D7F6
- SHA-256 fingerprint
- C7:7F:6D:AE:FA:23:B4:3A:0B:A6:76:17:ED:AA:9E:C3:D7:66:AD:19:56:CD:4A:B6:0B:0E:C1:9E:4E:D1:58:B8
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
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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