How exposed is your organisation?
Enter your domain. In seconds you see what any attacker sees first: whether mail in your name can be forged, whether your website is served safely, and more. Free, no account.
What you get at once
Four checks anyone can verify, with a provisional grade: mail spoofing (SPF, DKIM, DMARC), HTTPS and certificate, DNSSEC, security.txt. Meanwhile we count what the owner-only checks find, so you know what is waiting.
What the owner gets
After a one-click confirmation from an address on your domain: open and risky services, software with exploited vulnerabilities, lookalike domains and phishing pages, leaked accounts, your Microsoft 365 tenant, certificate expiry and forgotten hostnames — plus a PDF.
Fenceliner Quick Check only reads public information: DNS records, certificates and public data feeds about the domain. Nothing is scanned or probed. Developed and operated by Route443 B.V. · Privacy