Here's how to list the IPs of devices on the network using Linux utils.
Get the tool:
sudo apt install arp-scan
Determine Network Interface
How are you connected to the network? Run:
Look for something like
wlp0s20f3, hehe. Copy that interface name into the next step.
Scan for Devices
sudo arp-scan --interface=wlp0s20f3 --localnet
Read results, including IPs, MAC addresses and vendor brand names.