Checking against multiple domains

Question

Hi all
The script below works perfectly fine, but I feel there is a better way to write it/condense it. We have a list of nearly 2,800 servers that we have to confirm which of the 8 domains they belong to. When I run this script from the root domain it checks against
that domain and, if not a part of the root domain, then moves onto the first child domain, and then the next child domain, and so on.
$servers = Get-Content c:\scripts\servers.txt
foreach ($server in $servers){
  If (test-connection $server){
       write-host "Checking which domain $server is part of..."
       try {
            $a = Get-ADComputer -Identity $server
            Write-Host "$server is member of rootdomain"
       catch [Microsoft.ActiveDirectory.Management.ADIdentityNotFoundException] {
             try {
                  $a = Get-ADComputer -Identity $server -server childdomain1
                  Write-Host "$server is member of childdomain1"
             catch [Microsoft.ActiveDirectory.Management.ADIdentityNotFoundException] {
                  try {
                       $a = Get-ADComputer -Identity $server -server childdomain2
                       Write-Host "$server is member of childdomain2"
                  catch [Microsoft.ActiveDirectory.Management.ADIdentityNotFoundException]{
                       try {
                            $a = Get-ADComputer -Identity $server -server childdomain3
                            Write-Host "$server is member of childdomain3"
                       catch [Microsoft.ActiveDirectory.Management.ADIdentityNotFoundException]{
                               Write-Host "$server not found on any domain"
  }Else{
        Write-Host "$server not responding"
That's a lot of Try/Catch when you have 7 child domains, so I was wondering if there was a way to check against multiple domains in a better way.
~Rick

Answer 1

While the method you suggest is easier if the list was flat, the list I am using is dynamic and the script will run against it every night. Essentially, it pulls from an XLS sheet in column A (hostname), looks to see if column B (domain) is empty, and if
it is empty it then runs the script to pull specific details about the server. Once it captures the info it then populates the spreadsheet with the required details (IP, # of CPU cores, memory, storage size, OS, service pack, DNS details, etc...).
Unfortunately we don't have SCCM to do something like this. The portion I copied above is just a small snip-it from the real script. I was hoping to simplify that portion so I could condense the script a little more.