About the QUAD9 category

Welcome to the Quad9 Community Forum. Quad9 is a free security solution that uses DNS to protect your system against the most common cyber threats. It improves your system’s performance, plus, it preserves and protects your privacy. If you need technical support, please contact support@quad9.net.
IPv4: 9.9.9.9, 149.112.112.112
IPv6: 2620:fe::fe, 2620:fe::9