SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
ac-duderstadt.de
SSL/TLS Certificate
SSL/TLS Certificate for ac-duderstadt.de
Expiring soon- Issued by (CA)
- Sectigo Limited
- Subject
- *.ac-duderstadt.de
- Valid from
- Nov 9, 2025
- Valid until
- Nov 23, 2026 (16 days remaining)
- Public key
- RSA 2048-bit
- Serial
- DB441C8B781C6A1E32F9EB83057EC075
- SHA-256 fingerprint
- 5E:2A:92:CE:C0:87:67:FE:1B:C6:20:BF:BE:E3:24:AE:F8:B4:76:8C:31:1C:BF:7E:BF:1E:02:B1:BA:2D:CE:32
- Chain
- Sectigo Public Server Authentication CA DV R36 → Sectigo Public Server Authentication Root R46 → USERTrust RSA Certification Authority
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 Oct 2, 2026.
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TLS certificate
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