I know there is a single line of a command and its arguments that can help display all computer IP addresses (those that are being used) on a LAN, and my computer is also a client, as one of those displayed, but I forgot. What is it?
You could do the
arp -a command to show all ARP entries in the table about computers on your network.
Not everything with an IP address is a computer - I found none of these suggestions returned all active IP addresses - in fact most returned very few. My home network has a combination of wired and wireless devices and two routers, mobile phones, TV, PVR, Apple AirPort and probably a few things I have forgotten. I used the following to scan all addresses on the 192.168.1.xxx subnet:
for /L %i in (0,1,255) do ping -n 1 -w 250 192.168.1.%i>>ipaddress.txt
The resulting file ipaddress.txt contains the ping results for all addresses and I looked for those with "
Received = 1" - currently 16 addresses returned a result - I only have 4 computers in the house - and they were not all on.
There is the
net view /all command which will list all of the computer names that are connected to the same LAN.
From that you can retrieve the individual IP addresses using the
nslookup <computer name> command or write a batch script to do it for you.
Here is an example batch I threw together to illustrate.
@echo off setlocal EnableDelayedExpansion set "xNext=" set "xComputer=" for /f %%A in ('net view /all') do ( set "xComputer=%%~A" if "!xComputer:~0,2!"=="\\" for /f "tokens=2,* delims=. " %%X in ('nslookup %%A') do ( if "!xNext!"=="1" ( echo.!xComputer! = %%X.%%Y set "xNext=0" ) if "!xComputer:~2!"=="%%~X" set "xNext=1" ) ) endlocal pause
net view /all, or writing a batch script there is no native/built-in command line to do this (at least not that I know of).
If you're willing to use a non-native command, I would suggest using Nmap. You can run
nmap -sn 192.168.0.0/24 (replacing the subnet with the appropriate one for your LAN) to achieve what you're looking for, more reliably so than
net view /all or
arp -a in my opinion.
ipconfig /all (use forward slash, not backwards)
echo ls %USERDNSDOMAIN%|nslookup
This is my quick solution. It tells you what type of device is connected at each ip address:
display all computer IP addresses (those that are being used)
I think you might mean
netstat -a this gives you an active list. If you want to know the program using the ip address then use
netstat -b (open as administrator).
As indicated by someone else, you can use
arp -a however make sure that you ping a broadcast address first so that ARP reports all the devices. For example,
you get a list of all devices connected to the network by their IP and MAC addresses. you can look up the MAC addresses on a website like https://aruljohn.com/mac.pl to find out who the vendor of the NIC is. This should help you narrow down what most of the devices are. i.e. computers, printers, TV, cell phone, etc..