SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
bau-hb.de
SSL/TLS Certificate
SSL/TLS Certificate for bau-hb.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- bau-hb.de
- Valid from
- Oct 16, 2026
- Valid until
- Jan 14, 2027 (70 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 0530E48FC56F14D2161B696D91B8573D1939
- SHA-256 fingerprint
- 72:E3:68:A1:4A:F7:0B:38:DE:93:1D:56:B4:9B:2C:FC:17:A6:F6:33:AD:8B:B5:B8:93:BE:0D:19:8A:62:51:B4
- Chain
- YR2 → 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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This is today's certificate. Turn on monitoring and we'll watch bau-hb.de continuously, notifying you the moment anything moves across all three signals:
Uptime
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DNS changes
We watch NS, MX, CAA, CNAME, TXT and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
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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