A wireless router's diagnostic tools can't tell you how many individual people are connected to the network, but the tools can tell you how many devices are connected to the network to give you an idea of how many people are using it. The device listing feature can be found in the router's Web browser configuration menu and will identify all devices including computers, game consoles, mobile devices and smart TVs currently connected to the network. Netgear, Linksys and Belkin routers all feature a device list option.

Access the Device List

To access the device list, open a Web browser on a network computer and enter the Gateway IP address in the address bar. The router may list the Gateway IP address on the device, but if not you can find the address by pressing "Windows-R" to open the Run box. Enter "cmd," then type "ipconfig," press "Enter" and look for the number next to "Default Gateway." Once in the router's setup utility, look for something along the lines of "Device List" or "Client List" in the menu; click the option to bring up the list. The device list may include information like IP addresses, operating systems, device types and device names. A single person may connect to the network with multiple devices, so match each device to a person and you can manually count how many people are using the network.