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Rogue DHCP test tool

I am using the Rogue DHCP test tool and it's showing me a very old server that doesnt' exist anymore. I tried looking in myAD to find it, but I'm not finding it.  Any help would be appreciated.
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Sarang Tinguria
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when I typed that command, I got this error:

"the following command was not found: dhcp show server"
"Netsh DHCP show server" copy paste without quotes else the link i have give also have this command

Run on Domain Controller (I tried on that)
open CMD in Run as administrator mode
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Or you may also open adsiedit directly and navigate to location given in article and see if you could find entry of that very old server that doesnt' exist
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Thanks everyone, I was able to get the command to work: Netsh DHCP show server

Here's my other problems, I've attached the file with the output.
So I have some problems, for example, currently, the following servers are DCs, (DC1 and DC3)

DC2 used to be a few weeks ago, but I need to remove it.  Then Loudcry and Freewill are very old servers that again are no longer in use.  The problem is, that the IP address of loudcry (192.168.100.89 is in use, as my cluster IP address, as I am using Hyper V in a cluster environment.  Also, the IP address of DC3 is 192.168.100.91, which in this screenshot is listed as DC2, which is not accurate, as I used the IP address of DC2 for DC3, and just turned off DC2, which I plan to delete.

How would I fix this mess?
dhcpservers.jpg
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ok, so after going to net services, I see the following servers:
dc1
dc2
dc3
DhcpRoot

So DC1 and DC3 are ok.  DC2 I plan to delete the VM, so I'm guessing that can be removed?
Also what is DhcpRoot entry, as when I looked at the properties, (dhcpServer) property listed the loudcry and the IP 192.168.100.89

So not sure if I can delete that or not, as my cluster IP now is the 192.168.100.89
dhcplist.jpg
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Thanks for the help, got it fixed.