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 fundacjanexus.org

Hostname mismatch
Issued by (CA)
Let's Encrypt
Subject
panel01.sprintdatacenter.pl
Valid from
Jul 14, 2026
Valid until
Oct 12, 2026 (83 days remaining)
Public key
RSA 4096-bit
Serial
05C244510CA0473909B0E8DBF69688DE753D
SHA-256 fingerprint
2F:88:18:EC:50:1C:66:6B:87:2F:44:9A:75:AA:23:D0:2D:D6:AC:85:AA:97:00:72:D1:38:1A:D0:6A:4F:00:D2
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
mail01.sprintdatacenter.pl, panel01.sprintdatacenter.pl

Certificate Authority Authorization (CAA)

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