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 gasag-gruppe.de

Valid
Issued by (CA)
Let's Encrypt
Subject
www.gasag-gruppe.de
Valid from
Jun 18, 2026
Valid until
Sep 16, 2026 (42 days remaining)
Public key
RSA 4096-bit
Serial
05866300E976DF0FEEE08C3C7A0AEF2CAE1B
SHA-256 fingerprint
84:9C:72:AA:F4:32:DC:C5:3A:C0:92:23:00:39:28:12:6C:6F:6B:C9:AE:23:D9:20:43:86:2B:25:16:F0:7F:87
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (2)
gasag-gruppe.de, www.gasag-gruppe.de

Certificate Authority Authorization (CAA)

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TLS certificate

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