SSL/TLS Certificate Lookup

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

webdomu.cz

SSL/TLS Certificate

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SSL/TLS Certificate for webdomu.cz

Valid
Issued by (CA)
Let's Encrypt
Subject
app02.webdomu.cz
Valid from
Jul 3, 2026
Valid until
Oct 1, 2026 (72 days remaining)
Public key
EC 256-bit
Serial
05482E32CF479CEC16C1F45D649B2E156C0D
SHA-256 fingerprint
5D:D0:72:BA:E9:2E:20:75:5D:A9:61:47:E2:5E:17:85:F4:4C:FF:23:64:C2:82:E8:FA:CC:9A:30:37:3B:E1:CE
Chain
YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (3)
app02.webdomu.cz, webdomu.cz, www.webdomu.cz

Certificate Authority Authorization (CAA)

The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).