SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
bau-bildung.de
SSL/TLS Certificate
SSL/TLS Certificate for bau-bildung.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- bau-bildung.de
- Valid from
- Jun 13, 2026
- Valid until
- Sep 11, 2026 (50 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0573671C5AF6A0DAAA51BE776AC1BC3A9958
- SHA-256 fingerprint
- 45:83:6A:4B:3D:B8:E9:D8:E7:23:39:73:DF:32:F9:28:7B:E1:57:99:01:1D:E7:04:D1:2E:34:85:7E:D9:40:69
- Chain
- YR1 → Root YR → ISRG Root X1
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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