SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
s-mail.cz
SSL/TLS Certificate
SSL/TLS Certificate for s-mail.cz
Valid- Issued by (CA)
- DigiCert Inc
- Subject
- s-mail.cz
- Valid from
- Jun 27, 2026
- Valid until
- Sep 24, 2026 (64 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 039717E022AAD33CB44CF28697DC7561
- SHA-256 fingerprint
- E2:C9:1A:33:6E:6A:7F:73:E5:D1:B2:7F:B4:97:07:E6:99:E5:BB:2C:DF:97:8A:21:4D:A4:E3:95:F4:91:6D:D0
- Chain
- Encryption Everywhere DV TLS CA - G2 → DigiCert Global Root G2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by s-mail.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch s-mail.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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