SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
jk-design.cz
SSL/TLS Certificate
SSL/TLS Certificate for jk-design.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- jk-design.cz
- Valid from
- Jul 13, 2026
- Valid until
- Oct 11, 2026 (80 days remaining)
- Public key
- EC 256-bit
- Serial
- 05A0C29AD594EB2435C4D47D93FF633B1140
- SHA-256 fingerprint
- 56:70:47:84:AD:AB:01:A0:62:21:74:B7:9E:68:0D:5E:53:CC:74:57:68:E5:6F:D9:38:4C:E6:07:42:97:29:CE
- Chain
- YE2 → Root YE → ISRG Root X2 → 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 jk-design.cz's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch jk-design.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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