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 gruesch-danusa.ch

Valid
Issued by (CA)
Let's Encrypt
Subject
gruesch-danusa.ch
Valid from
Sep 27, 2026
Valid until
Dec 26, 2026 (54 days remaining)
Public key
RSA 2048-bit
Serial
064B1B230ECA784C8ED2727EC0E4759F7B2C
SHA-256 fingerprint
B4:4A:1C:26:CF:C5:5F:86:1F:38:4A:7B:A4:7C:41:EE:C2:CD:4A:73:8B:B2:F0:0C:8C:8B:46:9F:39:23:B0:A3
Chain
YR1 → Root YR → ISRG Root X1
Subject Alternative Names (2)
*.gruesch-danusa.ch, gruesch-danusa.ch

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 10, 2026.

Never get surprised by gruesch-danusa.ch's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch gruesch-danusa.ch continuously, notifying you the moment anything moves across all three signals:

Certificate monitor showing the issuer, expiry date, chain status, fingerprint, covered names, and a history of a rotation and an expiry warning

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.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.