CmdID / PowerShell / Cmdlets / Get
Get-WebAppDomain
Gets the application domains in which the specified IIS worker process is running. Windows Server PowerShell reference
From the Windows Server PowerShell reference 3 parameters Its page in the reference
Parameters
-ApplicationPool, -apppool, -poolSpecifies the application pool for which application domains are returned.-InputObjectSpecifies the input object from which parameter data is received.-ProcessId, -proc, -procid, -pid, -wpSpecifies the ID of the worker process for which the application domain is returned.