SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
h-square.cz
SSL/TLS Certificate
SSL/TLS Certificate for h-square.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- theinmetalworks.cz
- Valid from
- Jun 12, 2026
- Valid until
- Sep 10, 2026 (45 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06D51E2A32B70B46699DA7BDB9DDB318FAE0
- SHA-256 fingerprint
- 5A:68:A1:56:EC:06:F1:8D:A8:4D:C4:BF:7D:19:BF:81:8C:A5:1E:8C:18:1D:AD:77:91:AF:D5:0B:39:36:50:5E
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
Never get surprised by h-square.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch h-square.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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