SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
trefz-fenster.de
SSL/TLS Certificate
SSL/TLS Certificate for trefz-fenster.de
Valid- Issued by (CA)
- Sectigo Limited
- Subject
- *.trefz-fenster.de
- Valid from
- Mar 6, 2026
- Valid until
- Mar 20, 2027 (225 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 92A458E280B2FCBC390D578048B763CC
- SHA-256 fingerprint
- 4B:79:41:BB:C2:3E:04:99:D4:D1:63:8F:18:08:5D:AF:E9:E1:30:3B:C4:4B:12:DF:81:87:F3:13:7A:3F:21:E5
- 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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