SSL/TLS Certificate Lookup

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

odn.slupsk.pl

SSL/TLS Certificate

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SSL/TLS Certificate for odn.slupsk.pl

Valid
Issued by (CA)
Let's Encrypt
Subject
odn.slupsk.pl
Valid from
Jun 1, 2026
Valid until
Aug 30, 2026 (40 days remaining)
Public key
RSA 4096-bit
Serial
0641DB3EA3B5E592C1A9293CC9FEBE7A4B92
SHA-256 fingerprint
CE:4E:9A:28:DC:B4:1A:D6:00:5B:24:B8:2F:DB:B1:6D:13:E5:1B:F3:09:8B:16:C8:73:57:BD:2D:DD:7D:72:51
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
odn.slupsk.pl, www.odn.slupsk.pl

Certificate Authority Authorization (CAA)

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