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Free online security scanner

Enter your domain and we'll scan its DNS records, email setup and website, then show you anything that could put your business at risk.

  • Your operating system Detecting…
  • Your browser Detecting…
  • Browser security Checking…
  • Your IP address Detecting…

Scan your domain

When you hit scan, we check your name servers, email records (MX, SPF, DKIM and DMARC), public blacklists, your SSL certificate and your website's server, and try to spot anything that needs attention. We only look at public information, the same things any visitor or email server can see. Nothing on your systems is changed.

What We Check

Five areas attackers look at first

Each one is a common, easily missed weak spot for small businesses.

Name servers

Whether your DNS is split across more than one provider, so a single outage can't take your website and email offline.

Email security

Your MX, SPF, DKIM and DMARC records, which decide whether criminals can send email pretending to be you.

Blacklists

Whether your domain or mail servers appear on the public spam blacklists that cause your email to bounce.

SSL certificate

Whether your certificate is valid, trusted and current, and whether your server still allows outdated encryption.

Website & server

What your server reveals about its software and operating system, whether that version has known vulnerabilities, which platform runs your site, and which security headers are missing.