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 gnsalumni.org

Expired
Issued by (CA)
Let's Encrypt
Subject
aiu.to
Valid from
Apr 16, 2025
Valid until
Jul 15, 2025 (expired 372 days ago)
Public key
RSA 2048-bit
Serial
06091279B9A58E65030EFC439844AC3CE211
SHA-256 fingerprint
2B:B9:7E:A9:12:91:02:E1:34:16:6A:F7:18:F7:BE:87:85:38:49:38:3C:A2:33:F8:C0:35:7C:D7:BF:AD:CC:BB
Chain
R10 → ISRG Root X1
Subject Alternative Names (15)
aiu.to, appletreegroup.com, dosgatosforge.com, gnalumni.org, gnnalumni.org, gnsalumni.com, gnsalumni.org, greatneckalumni.org, liusfa.org, toastman.net, toastman.org, tony.aiu.to, www.aiu.to, www.appletreegroup.com, www.liusfa.org

Certificate Authority Authorization (CAA)

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