In this article we will look at how to go about finding and then creating a list of all the available IP addresses on your local area network (LAN). The software we will be using is the IP Address Tracker from SolarWinds which is a free tool that anyone can use. The tool, although basic, will enable you to find all the available, reserved and currently used IP addresses on your network as well as exporting that list to a .csv file for future reference.
So let’s take a look at how to use the software. First, head over to the SolarWinds site and download the free IP address tracking tool. Once you have downloaded and installed the program, open it up. Note that you will be required to open the tool as the administrator, so right-click on it and select Run as administrator.
Once the program opens, select New Subnet at the top of the window.
A small window will open in to which you need to enter the following information. The Subnet Mask will be done for you.
- A Subnet Name (eg. company name)
- Your Subnet Address
Once you hit OK, the program will begin scanning all the IP address for the given value which should only take about 5-15 seconds. When it has finished you will be presented with all of the IP addresses that are currently in use as well as those that are reserved or available to use. Using the drop-down box over on the right, you can easily sort these into Used/Available/Reserved addresses.
To export a list of these addresses, select Export at the top of the window. Select the Fields that you wish to include (leave them all checked) and hit OK.
Then simply name the file and Save it. This will then save the address list to a .csv
There is a Pro version of the software called IP Address Manager that has a lot more functionality and would be of great use in a more corporate environment. The Pro Version is pretty expensive, although you get what you pay for. IP Address Manager offers the following benefits:
- Centrally manage, monitor, alert, & report on your entire IP infrastructure
- Maintain Microsoft DHCP/DNS & Cisco DHCP services from a single web interface
- Optimize IP space utilization & avoid IP conflicts via automatic scans & preventative alerts
- Deliver role-based access control along with detailed event recording & activity logs
- Gain critical insight into IP address space through real-time views & historical tracking
Note: If you get a Error 339 when using this software, then you just need to register the file correctly on your side. To do this, open a command prompt with Admin privileges and enter the following string and hit Enter:
regsvr32 “C:\Program Files (x86)\Common Files\SolarWinds\ComDlg32.ocx”
Note that you can replace the end section of the string to match the .OCX file that may be causing the issue. For example, SWLogo.ocx or IGThreed40.ocx etc
If you are getting an Error 91 then please see this fix