SSL/TLS Certificate Lookup

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

zdrowastrefa.pl

SSL/TLS Certificate

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SSL/TLS Certificate for zdrowastrefa.pl

Valid
Issued by (CA)
Let's Encrypt
Subject
zdrowastrefa.pl
Valid from
Jun 8, 2026
Valid until
Sep 6, 2026 (47 days remaining)
Public key
RSA 2048-bit
Serial
05A5F947052EBEB0C7B5B504BA16762E9B21
SHA-256 fingerprint
04:DE:6F:CF:D8:0E:55:76:28:E1:3A:B8:81:4F:DF:AD:64:53:89:D8:50:6D:49:67:7F:B3:93:08:4A:36:46:27
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
www.zdrowastrefa.pl, zdrowastrefa.pl

Certificate Authority Authorization (CAA)

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