SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
sam-cl.cz
SSL/TLS Certificate
SSL/TLS Certificate for sam-cl.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- sam-cl.cz
- Valid from
- Aug 26, 2026
- Valid until
- Nov 24, 2026 (68 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 066A36D85EF620984ACCB60F99C10E1D8D7A
- SHA-256 fingerprint
- E6:8A:1B:3C:A9:77:DA:CA:33:EF:9B:6C:6E:24:D1:AE:CD:BF:ED:C4:BC:56:39:A7:17:C4:93:FD:34:5D:E8:51
- 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.
This certificate has been served since Sep 14, 2026.
Never get surprised by sam-cl.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch sam-cl.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.
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