SSL/TLS Certificate Lookup

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

katena.pl

SSL/TLS Certificate

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SSL/TLS Certificate for katena.pl

Valid
Issued by (CA)
Let's Encrypt
Subject
katena.pl
Valid from
Jun 25, 2026
Valid until
Sep 23, 2026 (64 days remaining)
Public key
EC 256-bit
Serial
0594429DDE707B495D3AAC9036502940CDA7
SHA-256 fingerprint
BF:16:87:ED:1D:96:13:32:80:20:F8:8B:14:45:6E:C9:71:28:8B:F5:C2:BF:A3:1A:5E:67:4E:C8:2C:BC:5E:41
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
*.katena.pl, katena.pl

Certificate Authority Authorization (CAA)

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