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list domain controllers with powershell

for my own edification and later reference.

to start, let's grab the current domain.
$myDomain = [System.DirectoryServices.ActiveDirectory.Domain]::GetCurrentDomain()

just for fun, we’ll look at the forest.

now, let’s list the domains of the forest.

this will count every domain controller in every domain.
$myDomain.Forest.Domains | % { $_.DomainControllers.Count }

for a final count, we’ll add all the numbers together into $myCount.
$myDomain.Forest.Domains | % { $myCount = $_.DomainControllers.Count + $myCount}

to list all of the domain controllers, we can run this command.
$myDomain.Forest.Domains | % { $_.DomainControllers } | Select-Object name

finally, another way to count all of the domain controllers in the forest.
($myDomain.Forest.Domains | % { $_.DomainControllers } | Select-Object name).count


  1. Great stuff! Its helped me a lot!. I am stuck on something thought - if I can pick your brain. Using strings such as yours; how could I dump a listing of all domains in a forest, sites within those domains, domain controllers at those sites, and the subnet ranges of the sites themselves. I've seen bits and pieces around here and there - but I'm not smart enough to figure out how to get them together just right so that everything correlates in a nice csv or something I can actually work with.... Any ideas?

  2. for some reason, i'm just now seeing this comment, josh. i'll put something together and post it today.

  3. hal's version:


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