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IP addresses not matching

Good day Experts -

A quandry for you.  My company uses static IP addresses for a small number of specific computers so we can lock down their Internet access. We have a few reserved IP addresses in a separate range that my team can temporarily use for admin work, which allow basically unrestricted Internet access.

In this case, we used the address 192.168.1.39 on a computer, but apparently forgot to change it back to what it should be.  I'm trying to track down what computer this was, so I can fix this problem.

So, I use nslook 192.168.1.39 (also tried another 3rd party utility) and I get a host name.  Now the fun starts.  I hop out to that computer to fix this and it is using the IP address that it should have (which is 192.168.1.18 for the record).

I can ping this hostname and it returns 192.168.1.18.  Also, I get replies when I ping 192.168.1.39.  So... .39 is apparently hidden somewhere?

Thoughts?

Windows computers, running XP Pro btw.
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Geisrud
Asked:
Geisrud
1 Solution
 
PapertripCommented:
If you only have a small number of computers using the restricted IP range, you could just check each of those individually.  You don't happen to have a list of MAC addresses for each computer do you?  That would definitely make this easier.
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GeisrudAuthor Commented:
small enough (and close enough) computer base I can get MACs no problem.
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hyperliteCommented:
do you have the host names? If so then I would either create a script or ping each one manually to get the ip address of each host.  External dns? If not then look there as well for comparison.
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GeisrudAuthor Commented:
I do have the hostnames available for all computers in the company.  I don't know enough about scripting to do what you describe.
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dejaanbuCommented:
Try to clear the arp cache . i hope it will help you
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GeisrudAuthor Commented:
I was able to find the computers with my static IP address via our antivirus server which has a list of all hostnames and current IP addresses.
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GeisrudAuthor Commented:
Not the best solution, and not one that others can really use.  I just happened to work in my environment.
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