SSL/TLS Certificate Lookup

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

SSL/TLS Certificate for ekozefir.com.pl

Hostname mismatch
Issued by (CA)
Let's Encrypt
Subject
biogazownia.plus
Valid from
Jun 13, 2026
Valid until
Sep 11, 2026 (51 days remaining)
Public key
RSA 4096-bit
Serial
069EFC275B619687E0B83F4E4ED3FF5F5758
SHA-256 fingerprint
6B:E1:53:93:F2:AA:B9:A6:26:36:1F:0B:63:5B:4F:F4:5E:DE:DA:BC:D6:4C:D3:E2:B7:C6:6B:80:B7:9C:80:6F
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
biogazownia.plus, www.biogazownia.plus

Certificate Authority Authorization (CAA)

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