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 windhager.fr

Expired
Issued by (CA)
Let's Encrypt
Subject
qr.windhager.eu
Valid from
Aug 24, 2024
Valid until
Nov 22, 2024 (expired 652 days ago)
Public key
RSA 2048-bit
Serial
035878F4B05EBA9A5982439C25B378AFEBF6
SHA-256 fingerprint
AA:22:43:E4:CB:C2:4B:90:16:E7:A6:1D:7F:F9:EF:C9:EF:7B:81:FA:DE:5A:FD:5D:BA:67:2F:D6:E4:5F:DB:BB
Chain
R11 → ISRG Root X1
Subject Alternative Names (1)
qr.windhager.eu

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 Aug 14, 2026.

Never get surprised by windhager.fr's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch windhager.fr 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.

Monitor this certificate free

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