SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
bieri-ag.ch
SSL/TLS Certificate
SSL/TLS Certificate for bieri-ag.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- bieri-ag.ch
- Valid from
- Aug 19, 2026
- Valid until
- Nov 17, 2026 (30 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 056800B0CF458DE614D9890E6644F6A0F5D3
- SHA-256 fingerprint
- 97:90:A3:52:CC:B6:7C:45:AD:24:18:CC:42:90:FB:66:75:3A:63:AB:92:2E:57:55:63:56:26:CE:6B:5C:1E:4F
- Chain
- YR1 → Root YR → ISRG Root X1
Certificate Authority Authorization (CAA)
No CAA policy is published for this domain — any certificate authority may issue for it.
This certificate has been served since Sep 9, 2026.
Never get surprised by bieri-ag.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch bieri-ag.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, 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.