SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
h-therma.cz
SSL/TLS Certificate
SSL/TLS Certificate for h-therma.cz
Untrusted chain- Issued by (CA)
- DigiCert Inc
- Subject
- www.h-therma.cz
- Valid from
- May 15, 2026
- Valid until
- Nov 29, 2026 (14 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 07ED708B70C396E0DFE3EDDC8AC1A3FA
- SHA-256 fingerprint
- B2:88:07:AE:05:55:E2:C6:E8:62:F5:AF:BC:38:64:EA:2D:51:0B:9E:A5:92:34:2F:57:FF:F7:6A:C0:C6:22:15
- Chain
- —
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by h-therma.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch h-therma.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.