DNSSEC (DNS Security Extensions) allows you to sign your DNS records to prevent a Man-in-the-Middle attack by making sure the DNS records cannot be hijacked. An attacker could tamper the DNS response or poison the DNS cache and redirect the user to a malicious site. Use this DNSSEC lookup tool to verify if a domain has DNSSEC enabled. For a quick test, simply type "sigok.verteiltesysteme.net" in the form below: