SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sat-tech.cz
SSL/TLS Certificate
SSL/TLS Certificate for sat-tech.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- sat-tech.cz
- Valid from
- Sep 21, 2026
- Valid until
- Dec 20, 2026 (65 days remaining)
- Public key
- EC 384-bit
- Serial
- 05F35ABF723296B00597D341AC0D247F59A1
- SHA-256 fingerprint
- 79:62:55:60:B9:1C:5D:7E:C9:85:F4:55:95:F0:13:0F:7B:73:ED:6D:34:86:D2:15:33:54:6A:D7:74:BF:80:AE
- Chain
- YE2 → Root YE → ISRG Root X2 → 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 Sep 24, 2026.
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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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