SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
app-backend.de
SSL/TLS Certificate
SSL/TLS Certificate for app-backend.de
Expired- Issued by (CA)
- Starfield Technologies, Inc.
- Subject
- *.wissenswerft.net
- Valid from
- Jan 27, 2025
- Valid until
- Jan 27, 2026 (expired 210 days ago)
- Public key
- RSA 4096-bit
- Serial
- 3C8E8C5A3C18005B
- SHA-256 fingerprint
- 2E:01:56:AA:0F:19:C6:86:73:CE:4C:29:8E:62:5F:21:88:9A:05:67:C0:57:17:27:27:D6:AD:83:7A:62:F8:51
- Chain
- Starfield Secure Certificate Authority - G2 → Starfield Root Certificate Authority - G2
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Aug 19, 2026.
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TLS certificate
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