SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
baust-tec.de
SSL/TLS Certificate
SSL/TLS Certificate for baust-tec.de
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- baust-tec.de
- Valid from
- Jul 28, 2026
- Valid until
- Oct 26, 2026 (31 days remaining)
- Public key
- EC 256-bit
- Serial
- 06C4D99FE4EE2CBC2739711773F1F85C1AE8
- SHA-256 fingerprint
- 29:F5:0E:B0:EB:C5:4B:82:46:88:2C:C5:A0:0A:1B:5B:54:3C:54:0F:06:95:93:78:37:24:3C:4B:40:A5:6B:4B
- Chain
- YE1 → Root YE → ISRG Root X2 → 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
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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