Your POS Is Only as Good as Your Network

What is my IP?

Your public address is how the internet sees this connection — useful when checking firewall rules or reporting an issue to your provider.

This is your public (WAN) address. Browsers cannot see your computer’s local (LAN) address — to find it, run ipconfig on Windows or ipconfig getifaddr en0 on a Mac. The first three parts of that local address are the network prefix used by the scan tool below.

Approximate results to this website using several parallel connections. Each direction runs for up to 10 seconds and may finish sooner at its data limit. VPNs and network load can affect results.

Find devices on your network

Browsers cannot scan a private network or see device names reliably. Run this command on a computer connected to the network you manage to list reachable IP and hardware addresses. Scan only networks you own or administer.

# PowerShell: discover reachable devices on your /24 network
$subnet = '192.168.1'
1..254 | ForEach-Object {
  $ip = "$subnet.$_"
  ping -n 1 -w 150 $ip > $null
}
arp -a

Find your prefix in your computer’s network settings (the first three parts of its IPv4 address). The scan can take a minute or more. Some devices block ping and may not appear. When it finishes, copy the whole output and paste it below to identify each device.

Troubleshoot a network printer