SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for e-zet.cz
Valid- Issued by (CA)
- Actalis S.p.A.
- Subject
- *.e-zet.cz
- Valid from
- Oct 15, 2026
- Valid until
- May 2, 2027 (171 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 78F9D94E745C5BEC5C4B727D355588D2
- SHA-256 fingerprint
- 10:12:12:35:89:F9:12:DA:5A:E8:74:0B:4E:B3:CD:AB:CC:41:5E:BD:3E:9F:B1:7A:FD:F7:AF:8C:A1:72:7B:63
- 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 Sep 27, 2026.
Never get surprised by e-zet.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch e-zet.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.