Some Wi-Fi routers use a name called a Service Set Identifier, commonly referred to as an SSID, to identify the router on a local network. Manufacturers set a default SSID for their routers at the factory and typically use the same name for all of their routers. For example, Linksys routers typically all have the default Linksys SSID, while AT&T routers use a variation of ATT plus three digits.
How to Change Your Router's WiFi Name and Password
People change the default name of a WiFi network for several reasons:
Each router's instruction manual will have slightly different instructions for changing the SSID. However, the process is generally quite common among the major router manufacturers. The exact names of menus and settings may vary depending on the specific router model.
Determine the local address of the router and log in to the router's management console via a web browser. Enter the currently active username and password when prompted.