SiteSonar discovers your subdomains automatically via Certificate Transparency and watches their TLS certificates and uptime today — with domain/DNS and blacklist monitoring on the way.
Certificates is where we started. The vision is bigger: everything that can fail silently in your online presence, in one panel.
Automatic alerts for SSL/TLS certificate expiration —already live— and for domain and DNS renewals, on the way.
Checks every 5 minutes that your site responds (uptime) and that the expected content is still present in the HTML (HTTP keywords), with an email when something breaks or recovers.
Daily checks for whether your IP or domain shows up on spam or malware blacklists, so you catch reputation issues before your customers do.
No agents to install, no complex setup — just enter your domain.
We automatically find every subdomain that ever had a certificate issued, via Certificate Transparency.
We scan your domains at the interval you choose, so you don't have to remember to do it yourself.
We notify you by email when a certificate is about to expire, or when something changes that deserves your attention.
Go straight to the changes panel and know exactly what happened, where, and when.
Free to get started. No credit card required.
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