SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
der-zimmermann.com
SSL/TLS Certificate
SSL/TLS Certificate for der-zimmermann.com
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.der-zimmermann.com
- Valid from
- Jan 3, 2026
- Valid until
- Jan 17, 2027 (71 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 3BAADBE557AD4C7B2EA5C96905B2549D
- SHA-256 fingerprint
- 55:B3:7A:13:3E:9A:6B:C0:3F:D7:BE:D2:D4:99:60:07:AE:47:EF:AA:D3:E8:7E:86:A3:D2:12:C8:94:C9:8C:26
- 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.
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Uptime
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DNS changes
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TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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