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 flug24.at

Hostname mismatch
Issued by (CA)
Let's Encrypt
Subject
root1986-web.premium-rootserver.net
Valid from
Jun 7, 2026
Valid until
Sep 5, 2026 (45 days remaining)
Public key
RSA 2048-bit
Serial
0532297FA1E5053E5C96B91EE1228A3D73E2
SHA-256 fingerprint
4F:89:32:D8:AC:94:86:6B:21:F3:19:68:7F:6E:0D:70:C1:25:38:A3:E3:46:BC:FE:52:5B:B7:15:2C:23:35:BA
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (1)
root1986-web.premium-rootserver.net

Certificate Authority Authorization (CAA)

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