Domain names were created to make IP, or Internet Protocol, addresses more human-friendly. An IP address is a unique set of numbers that is assigned to every computer on the Internet. When visitors enter your domain name into a Web browser, the browser uses your domain name to find the correct IP address and, in turn, passes back the website associated with that IP address. A domain name consists of, at least, a top-level and a second-level domain. A top-level domain (TLD) is the part of the domain name located to the right of the dot ("."). The most common TLDs are .com, .net, and .org.