TOP > Various Settings of the Product > Product’s [Settings] Menu > [Interface] Menu > [Network] (PW208NX wireless LAN model only) > [Settings] > [Wi-Fi] > [IPv4] > [Netmask]
If you have selected [DHCP] in the [Mode] menu or [Wi-Fi Direct] is set, the gateway address you received from the DHCP server is displayed on the screen.