SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
SSL/TLS Certificate for bio-r.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- bio-r.ch
- Valid from
- Jul 27, 2026
- Valid until
- Oct 25, 2026 (43 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 05926F7740C087EF516B4A48E11952896F66
- SHA-256 fingerprint
- 32:F1:D2:2B:4E:9F:78:D8:01:D3:90:7D:B8:CE:3E:F3:61:AE:41:18:7D:D8:9F:8A:60:35:8E:49:7A:27:8C:24
- 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 bio-r.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch bio-r.ch 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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