SSL/TLS Certificate Lookup

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

pg.edu.pl

SSL/TLS Certificate

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SSL/TLS Certificate for pg.edu.pl

Valid
Issued by (CA)
Let's Encrypt
Subject
cui.pg.edu.pl
Valid from
Jul 14, 2026
Valid until
Oct 12, 2026 (82 days remaining)
Public key
EC 256-bit
Serial
05BD928705798905F1E71115577B1FFB2D28
SHA-256 fingerprint
00:CE:92:95:5C:DD:B6:C1:20:4A:45:EC:2B:87:46:28:A9:64:C5:F1:AC:36:9C:EF:18:66:43:A8:08:EC:DE:29
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (34)
chor.pg.edu.pl, cjo.pg.edu.pl, cmew.pg.edu.pl, cmtm.pg.edu.pl, ctbo.pg.edu.pl, ctt.pg.edu.pl, ctw.pg.edu.pl, ctwt.pg.edu.pl, cui.pg.edu.pl, eduroam.pg.edu.pl, jubileusz.pg.edu.pl, otwarta.pg.edu.pl, pg.edu.pl, samorzad.pg.edu.pl, studia.pg.edu.pl, szkoly.pg.edu.pl, task.pg.edu.pl, www.chor.pg.edu.pl, www.cjo.pg.edu.pl, www.cmew.pg.edu.pl, www.cmtm.pg.edu.pl, www.ctbo.pg.edu.pl, www.ctt.pg.edu.pl, www.ctw.pg.edu.pl, www.ctwt.pg.edu.pl, www.cui.pg.edu.pl, www.eduroam.pg.edu.pl, www.jubileusz.pg.edu.pl, www.otwarta.pg.edu.pl, www.pg.edu.pl, www.samorzad.pg.edu.pl, www.studia.pg.edu.pl, www.szkoly.pg.edu.pl, www.task.pg.edu.pl

Certificate Authority Authorization (CAA)

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