The Domain Name System is a powerful, flexible, and integral part of the Internet. Somewhat analogous to the 411 information service offered throughout American telephone system, DNS's most common use is to translate names—such as www.blackhat.com—to addresses— 216.231.63.34. But behind this deceptively simple operation lies a complex and interesting system, distributed widely but with a deeply centralized core. Though most commonly used to execute simple translations of the sort mentioned earlier, three aspects of the machinery lend themselves to more creative exploits. By creatively abusing the heirarchal, recursive, and cache-oriented nature of the multi-million-node DNS architecture, we can effect a range of unexpected functionality, including firewall penetration, bidirectional anonymous communication, large scale data transmission, and even "Voice over DNS".