A domain name is similar to a house number on the Internet. It is a hierarchical character identifier used to identify and locate computers on the Internet, corresponding to the Internet Protocol (IP) address of the computer. Compared with IP addresses, domain names are easier for users to understand and remember. As a basic Internet service, domain names can support application services such as WWW, EMAIL and FTP.

For example, http://www.paisuo.com/ is the domain name of the Chinese website of Paishuo Shanghai.