SSL/TLS Certificate Lookup

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

stefan-werum.de

SSL/TLS Certificate

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SSL/TLS Certificate for stefan-werum.de

Valid
Issued by (CA)
Let's Encrypt
Subject
*.stefan-werum.org
Valid from
Oct 29, 2026
Valid until
Jan 27, 2027 (75 days remaining)
Public key
RSA 2048-bit
Serial
05CCA18C203B0D7AA2862B80394B852CBEC8
SHA-256 fingerprint
DA:CC:FE:31:54:BD:2D:94:FE:7E:5B:87:30:E5:20:34:78:BF:39:51:C1:6C:AE:E1:BF:E8:91:EB:CE:EE:64:83
Chain
YR2 → Root YR → ISRG Root X1
Subject Alternative Names (30)
*.opimius-consulting.com, *.opimius-consulting.de, *.opimius.eu, *.opimiusconsulting.com, *.opimiusconsulting.de, *.stefan-werum.de, *.stefan-werum.info, *.stefan-werum.net, *.stefan-werum.org, *.stefanwerum.com, *.stefanwerum.de, *.stefanwerum.eu, *.stefanwerum.info, *.stefanwerum.net, *.stefanwerum.org, opimius-consulting.com, opimius-consulting.de, opimius.eu, opimiusconsulting.com, opimiusconsulting.de, stefan-werum.de, stefan-werum.info, stefan-werum.net, stefan-werum.org, stefanwerum.com, stefanwerum.de, stefanwerum.eu, stefanwerum.info, stefanwerum.net, stefanwerum.org

Certificate Authority Authorization (CAA)

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

We've observed 1 previous certificate for this host. This certificate has been served since Oct 10, 2026.

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TLS certificate

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