Find-LocalAdminAccess –Verbose
This function queries the DC of the current or provided domain for a list of computers (GetNetComputer) and then use multi-threaded Invoke-CheckLocalAdminAccess on each machine.
This can also be done with the help of remote administration tools like WMI and PowerShell remoting. Pretty useful in cases ports (RPC and SMB) used by Find-LocalAdminAccess are blocked.
See Find-WMILocalAdminAccess.ps1 and Find-PSRemotingLocalAdminAccess.ps1
Find local admin access on the current domain by using powerview.ps1
Find-LocalAdminAccess

Find-WMILocalAdminAccess

Find-DomainUserLocation -Verbose

Find-DomainUserLocation -UserGroupIdentity "<Group Name>"