SSL/TLS Certificate Lookup

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

katena.com.pl

SSL/TLS Certificate

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SSL/TLS Certificate for katena.com.pl

Valid
Issued by (CA)
Let's Encrypt
Subject
katena.com.pl
Valid from
May 15, 2026
Valid until
Aug 13, 2026 (22 days remaining)
Public key
EC 384-bit
Serial
06FCA9A47E4925664653D4706D2372A42BA2
SHA-256 fingerprint
E6:7F:58:95:50:AF:3A:52:FC:5B:1A:1A:37:B5:7E:80:DC:F5:AC:1F:72:D1:B1:7F:81:6D:D6:79:5C:5E:F2:F7
Chain
E8 → ISRG Root X1
Subject Alternative Names (3)
katena.com.pl, mail.katena.com.pl, www.katena.com.pl

Certificate Authority Authorization (CAA)

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