SSL/TLS Certificate Lookup

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

nfk.cz

SSL/TLS Certificate

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SSL/TLS Certificate for nfk.cz

Valid
Issued by (CA)
Let's Encrypt
Subject
nfk.cz
Valid from
Jul 19, 2026
Valid until
Oct 17, 2026 (88 days remaining)
Public key
RSA 4096-bit
Serial
05BC8920D4122A68398D0E77736C04604AC1
SHA-256 fingerprint
17:55:A3:CA:55:B7:17:28:09:CE:95:CB:BE:ED:A2:1F:D5:F2:6E:0C:54:AF:1E:CD:73:86:97:02:43:E0:CE:AB
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (5)
database.nfk.cz, nfk.cz, novofundlandklub.cz, www.nfk.cz, www.novofundlandklub.cz

Certificate Authority Authorization (CAA)

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