How can I get the SQL Server instance names running based on a hostname (COMPUTERNAME)?

I have only a hostname (what Microsoft calls a COMPUTERNAME). How can I get the names of SQL Server instances running on the host? It appears from other answers that I could look through the services running on the host. However, it is a remote machine and I am not an Administrator for the host or any of the database instances. The organization has not begun to use PowerShell remoting. Is there a better way? How can this be done? Windows PowerShell PS C:\> Get-Service -ComputerName Tyyyyyyy8B Get-Service : Cannot open Service Control Manager on computer 'Tyyyyyyyy8B'. This operation might require other privileges. At line:1 char:1 + Get-Service -ComputerName Tyyyyyyy8B + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + CategoryInfo : NotSpecified: (:) [Get-Service], InvalidOperationException + FullyQualifiedErrorId : System.InvalidOperationException,Microsoft.PowerShell.Commands.GetServiceCommand PS C:\> $PSVersionTable.PSVersion.ToString() 5.1.19041.2364 PowerShell Core PS C:\> Get-Service -ComputerName Tyyyyyyy8B Get-Service: A parameter cannot be found that matches parameter name 'ComputerName'. PS C:\> $PSVersionTable.PSVersion.ToString() 7.3.5 --- > ...why not ask an admin or DBA for help? I am a mere, lowly user. There is significant organizational resistance to making work requests of another group. --- What is the minimum set of permissions I would need to ask for in order to discover SQL Server instances?