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 borosliny.pl

Valid
Issued by (CA)
Let's Encrypt
Subject
borosliny.pl
Valid from
Jun 22, 2026
Valid until
Sep 20, 2026 (60 days remaining)
Public key
EC 384-bit
Serial
0541D0A44080E75BE739C34F11FEB3F1AFF0
SHA-256 fingerprint
F2:93:A9:C1:34:22:A6:4B:09:98:A8:91:D8:CF:DF:5D:BB:AF:43:88:ED:74:2C:51:10:3A:59:17:63:3B:34:98
Chain
YE1 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
borosliny.pl, www.borosliny.pl

Certificate Authority Authorization (CAA)

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