SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for protislunecni-plachty.cz

Valid
Issued by (CA)
ZeroSSL GmbH
Subject
www.protislunecni-plachty.cz
Valid from
Sep 29, 2026
Valid until
Dec 28, 2026 (74 days remaining)
Public key
EC 384-bit
Serial
C94A70C6E1C48884DBB9297EF43711CA
SHA-256 fingerprint
DE:32:6D:68:35:0C:73:73:21:5D:47:E2:79:08:20:FA:8D:FB:CB:D8:97:ED:C4:EC:58:99:09:F6:30:58:A7:A9
Chain
ZeroSSL ECC DV SSL CA 2 → Sectigo Public Server Authentication Root E46 → USERTrust ECC Certification Authority
Subject Alternative Names (2)
protislunecni-plachty.cz, www.protislunecni-plachty.cz

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

We've observed 1 previous certificate for this host. This certificate has been served since Oct 14, 2026.

Never get surprised by protislunecni-plachty.cz's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch protislunecni-plachty.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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.