Dynamic domain name also becomes DDNS, which is used for example, your home or company uses the operator's dial-up broadband line and non-commercial optical fiber, that is, you use the dial-up account and password to surf the Internet, so that you will get the public IP address again every time you dial. If you want to access this line externally, you need to know the current IP address, which will be very troublesome. However, using the dynamic domain name function, you can bind a fixed domain name with the dynamic IP address of your home or company, and you can access related equipment every time you use this domain name.

In addition, general routers support this function, such as netmoon router.