SSL/TLS Certificate Lookup

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

aup.de

SSL/TLS Certificate

SSL/TLS Certificate for aup.de

Valid

Issued by (CA): Let's Encrypt
Subject: aup.de
Valid from: May 26, 2026
Valid until: Aug 24, 2026 (33 days remaining)
Public key: RSA 2048-bit
Serial: 0560EC85661BB64EAA8467FC11E44E97C73C
SHA-256 fingerprint: 65:02:4E:A5:F4:A6:2E:F5:FE:0A:93:49:92:D9:17:3D:3E:03:F8:AB:63:05:0F:99:2D:27:6A:54:39:61:6C:48
Chain: R12 → ISRG Root X1

Subject Alternative Names (3)

aup.de, webmail.aup.de, www.aup.de

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