Some domain names build websites on the server, and some servers set up multiple websites.

There are many ways to use it, some use multiple ports, and each port corresponds to a website.

Some also use multiple domain names, and each domain name corresponds to a website.

For some non-professional on-site testing technology websites in Chinese mainland, because there is no legal record, and the regular 80 port is blocked by the regional communication company, non-80 ports, such as 88 ports, are used to provide access.