SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
bau-hs.at
SSL/TLS Certificate
SSL/TLS Certificate for bau-hs.at
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- bau-hs.at
- Valid from
- Jun 19, 2026
- Valid until
- Sep 17, 2026 (56 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 052D2F38D45134B4740E933894CFDEF3E703
- SHA-256 fingerprint
- C6:23:28:E0:22:0B:A5:F0:B5:11:80:57:46:7D:21:FA:D6:FE:BB:3D:2E:E9:C2:56:95:B4:1E:01:5C:73:06:5A
- 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.
Never get surprised by bau-hs.at's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch bau-hs.at continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME 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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