SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
samat-okna.cz
SSL/TLS Certificate
SSL/TLS Certificate for samat-okna.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- samat-okna.cz
- Valid from
- Sep 2, 2026
- Valid until
- Dec 1, 2026 (74 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0513DFB4B65318D8FBA59A8F1DF36494844A
- SHA-256 fingerprint
- 03:82:62:87:28:3D:D2:94:61:62:A9:56:CB:82:CB:7B:52:6D:D8:8A:53:B5:2D:4E:01:61:48:B7:D4:19:6D:89
- 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.
We've observed 1 previous certificate for this host. This certificate has been served since Sep 12, 2026.
Never get surprised by samat-okna.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch samat-okna.cz continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.