SSL/TLS Certificate Lookup
Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted
waelchli-ag.ch
SSL/TLS Certificate
SSL/TLS Certificate for waelchli-ag.ch
Valid- Issued by (CA)
- Let's Encrypt
- Subject
- waelchli-ag.ch
- Valid from
- Oct 22, 2026
- Valid until
- Jan 20, 2027 (66 days remaining)
- Public key
- RSA 2048-bit
- Serial
- 06379E8F24736CEE7320B5D0B3914B75CACA
- SHA-256 fingerprint
- AA:F1:17:2F:A6:FB:D8:83:AD:ED:88:05:08:16:41:BF:BB:19:AA:29:72:5E:79:54:71:10:C2:DD:64:4B:B5:1A
- 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 26, 2026.
Never get surprised by waelchli-ag.ch's certificate expiring
This is today's certificate. Turn on monitoring and we'll watch waelchli-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.