以 http://www.xinnet.com/ 为例
1.登陆新网,进入域名管理,解析
2.进入mydns
添加新的A记录
填写主机名比如:www.xxx.com
填写对应的ip地址:xxx.xxx.xx.xxx
3.还可以设置 转发、别名
ps:什么是DNS
https://en.wikipedia.org/wiki/Domain_Name_System
The Domain Name System (DNS) is a hierarchical decentralized naming system for computers, services, or any resource connected to the Internet or a private network.