SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
gtue-tz.de
SSL/TLS Certificate
SSL/TLS Certificate for gtue-tz.de
Untrusted chain- Issued by (CA)
- Let's Encrypt
- Subject
- gtue-tz.de
- Valid from
- Aug 4, 2026
- Valid until
- Nov 2, 2026 (76 days remaining)
- Public key
- EC 256-bit
- Serial
- 052FC5CB340465D399904CB2A587998531A8
- SHA-256 fingerprint
- 9F:47:33:38:82:10:F5:E5:C3:24:4F:21:A0:81:BB:37:C0:5A:CB:37:B6:29:F4:A7:7B:CA:6D:F9:2C:E1:7B:4C
- Chain
- YE1
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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