SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
zi-congress.de
SSL/TLS Certificate
SSL/TLS Certificate for zi-congress.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- zi-congress.de
- Valid from
- Jan 28, 2026
- Valid until
- Feb 18, 2027 (102 days remaining)
- Public key
- RSA 2048-bit
- Serial
- A7347DBA96017667B2337730F9D1FCBA
- SHA-256 fingerprint
- 12:41:08:D1:7F:79:4F:C5:09:8B:28:83:CA:B5:76:4A:E8:68:2A:45:8A:9D:AD:AA:8B:D5:04:2E:AC:52:51:5B
- 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 Aug 7, 2026.
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Uptime
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DNS changes
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TLS certificate
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