SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
f-class.cz
SSL/TLS Certificate
SSL/TLS Certificate for f-class.cz
Valid- Issued by (CA)
- Amazon
- Subject
- f-class.cz
- Valid from
- Oct 6, 2026
- Valid until
- Apr 21, 2027 (164 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06AB69284D2231E98E8C4509216D1E6D
- SHA-256 fingerprint
- 2D:85:60:5E:E3:BF:FB:F7:0B:D2:F1:B6:99:7E:46:06:80:42:AC:FC:DA:C7:7B:62:9E:06:CE:74:AC:04:11:D8
- Chain
- Amazon RSA 2048 M01 → Amazon Root CA 1 → Starfield Services Root Certificate Authority - G2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by f-class.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch f-class.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, 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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