CmdID / PowerShell / Cmdlets / Get
Get-GlobalAddressList
Use the Get-GlobalAddressList cmdlet to view a global address list (GAL) or a set of GALs. Exchange PowerShell reference
From the Exchange PowerShell reference 3 parameters Its page in the reference
Parameters
-IdentityThe Identity parameter specifies the global address list that you want to view.-DefaultOnlyThe DefaultOnly switch filters the results so only the default GAL is returned.-DomainControllerThe DomainController parameter specifies the domain controller that's used by this cmdlet to read data from or write data to Active Directory.