SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
fass-system.cz
SSL/TLS Certificate
SSL/TLS Certificate for fass-system.cz
Valid- Issued by (CA)
- Actalis S.p.A.
- Subject
- *.fass-system.cz
- Valid from
- Sep 26, 2026
- Valid until
- Apr 13, 2027 (181 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 3880F0BE6FD1E911A85B4109389D1598
- SHA-256 fingerprint
- 48:4F:70:2E:69:03:30:CF:10:41:37:00:FC:ED:70:44:B7:33:9C:D5:32:E6:1A:E1:AA:62:CE:28:45:16:E2:35
- Chain
- Actalis Domain Validated TLS Server RSA CA 2025 → Actalis TLS Server RSA Root CA 2025 → Actalis Authentication Root CA
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 Oct 4, 2026.
Never get surprised by fass-system.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch fass-system.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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