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 artus-apo-koeln.de

Hostname mismatch
Issued by (CA)
Sectigo Limited
Subject
*.kasserver.com
Valid from
Dec 4, 2025
Valid until
Jan 4, 2027 (168 days remaining)
Public key
RSA 2048-bit
Serial
EEA1A029C2D378BCBB1F6E761E8DB33F
SHA-256 fingerprint
B5:D3:DA:25:3C:BB:32:53:02:8A:64:28:ED:66:71:2E:EE:4A:BD:D9:C3:14:63:CC:C4:64:88:90:85:F4:16:8B
Chain
Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
Subject Alternative Names (2)
*.kasserver.com, kasserver.com

Certificate Authority Authorization (CAA)

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