Ports cannot be directly bound to domain names, but they can be mapped through routers. For example, the domain name: www.aa.com is 8080 in the server port, and 80 can be accessed as a map in the router, thus realizing the function you said in disguise.

A domain name is the name of a computer or computer group on the Internet, which consists of a series of names separated by dots. It is used to identify the electronic position of the computer in the process of data transmission (sometimes it refers to the geographical location, geographical domain name, and refers to the local area with administrative autonomy). The domain name masks the IP address. The purpose of a domain name is to become the address of a group of servers (website, email, FTP, etc.). ) It is easy to remember and communicate. The first registered domain name in the world was registered at 1985 1.