Active directory missing subnets

At a costumer AD i have many missing subnets. maybe a few hundred.

is there an eventlog or something else where i can get the subnet informations of clients which are not in a subnet which is known from the AD?

i wanted to write a script and get this information from netlogon.log, but as there is just the IP address it´s not really helpfull.

Best regards
Thomas
Thomas_1991Asked:
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Ganesamoorthy STech LeadCommented:
Can be found in netlogon logs

https://gallery.technet.microsoft.com/scriptcenter/Get-a-report-on-missing-f2a95194

to check is the given IP is added on the AD and in which subnet

http://www.windowstricks.in/2010/12/get-ip-info.html
Thomas_1991Author Commented:
yes the problem is to get the subnet information for these IP addresses from netlogon.

any suggestions how to get this information?
Ganesamoorthy STech LeadCommented:
You have the IP list and it's easy to convert to Subnet, mostly it's /24
Change the last bit to 0 and add /24 on each IP

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