SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
jh-pro.cz
SSL/TLS Certificate
SSL/TLS Certificate for jh-pro.cz
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- jh-pro.cz
- Valid from
- Oct 13, 2026
- Valid until
- Jan 11, 2027 (60 days remaining)
- Public key
- EC 256-bit
- Serial
- 06963C5122ED4349DF1F349B5879DB13137F
- SHA-256 fingerprint
- 7C:33:D2:AE:D6:A5:AB:00:60:7C:1A:15:56:F7:A9:C9:D4:D4:E3:D9:7D:CB:25:48:78:49:B4:A6:CB:D3:C3:03
- 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.
We've observed 2 previous certificates for this host. This certificate has been served since Nov 3, 2026.
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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.
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