1. 登录 http://www.noip.com
2. 选择 Hosts/Redirects -- Add A Host
3. 填写 期望的域名即可(如下图)

4. 更新域名的API: wget -q -O - --http-user=username --http-password=passwd "https://dynupdate.no-ip.com/nic/update?hostname=your_domain&myip=your_ip"