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 kodap-data.cz

Valid
Issued by (CA)
Let's Encrypt
Subject
kodap-data.cz
Valid from
Sep 12, 2026
Valid until
Dec 11, 2026 (88 days remaining)
Public key
RSA 2048-bit
Serial
06B1649E8E3ECDE9193C0B8C4F50581EB8C4
SHA-256 fingerprint
A9:33:35:34:66:E9:D2:F5:2B:1F:10:01:F2:E6:93:B0:98:35:82:08:BF:3D:FA:40:8F:DA:66:CA:13:9D:99:66
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (30)
kodap-data.cz, kodap-data.eu, kodap.biz, kodap.info, kodap.net, kodap.org, kodap.sk, kodap.tax, kodapdata.cz, kodapdata.eu, liberec-kodap.cz, libereckodap.cz, mzdy-diskretne.eu, priznanidane.eu, ucetnictvi-profesionalne.cz, www.kodap-data.cz, www.kodap-data.eu, www.kodap.biz, www.kodap.info, www.kodap.net, www.kodap.org, www.kodap.sk, www.kodap.tax, www.kodapdata.cz, www.kodapdata.eu, www.liberec-kodap.cz, www.libereckodap.cz, www.mzdy-diskretne.eu, www.priznanidane.eu, www.ucetnictvi-profesionalne.cz

Certificate Authority Authorization (CAA)

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

Never get surprised by kodap-data.cz's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch kodap-data.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.