SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
bau-ma.at
SSL/TLS Certificate
SSL/TLS Certificate for bau-ma.at
Hostname mismatch- Issued by (CA)
- Let's Encrypt
- Subject
- admin.easy-web-systems.at
- Valid from
- Aug 4, 2026
- Valid until
- Nov 2, 2026 (60 days remaining)
- Public key
- RSA 4096-bit
- Serial
- 05AF4B479DB168FF4EA9D2BCA7A9B2085A12
- SHA-256 fingerprint
- 04:31:03:67:98:92:72:68:9E:01:94:AD:F5:F1:84:58:8E:A5:9D:5B:52:5B:AB:C6:FA:38:C4:D0:16:CE:E9:13
- Chain
- YR2 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
The serving CA (Let's Encrypt) is authorized by this domain's CAA records (letsencrypt.org).
We've observed 1 previous certificate for this host. This certificate has been served since Aug 19, 2026.
Never get surprised by bau-ma.at's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch bau-ma.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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.