Secure64 DNS Cache is a scalable, carrier-grade DNS caching solution designed for modern networks. Built on the SecureOS kernel, it provides DNS caching services with superior network protection and exceptional blacklisting capabilities when used with Secure64 DNS Guard. It is designed to address the complex demands of service providers, including security and virtualization needs. Secure64 DNS Cache is not built on BIND, making it immune to BIND vulnerabilities. It is available as both a hardware and virtual appliance, running on Secure64's proprietary secure Linux operating system, SecureOS.