Navigating the Internet requires using addresses and corresponding names that identify the location of individual computers. The Domain Name System (DNS) is the distributed set of databases residing in computers around the world that contain address numbers mapped to corresponding domain names, making it possible to send and receive messages and to access information from computers anywhere on the Internet. Many of the technical, operational, and management decisions regarding the DNS can have significant impacts on Internet-related policy issues such as intellectual property, privacy, Internet freedom, e-commerce, and cybersecurity.