Need new way to check if client has our TeamViewer tenant installed

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Prior to TV 15.4 we used a software inventory management and deployment system to check if our computers were setup on our tenant TeamViewer Host by checking the registry Value:

HKEY_LOCAL_MACHINE\SOFTWARE\TeamViewer OwningManagerCompanyName

Sometime between then and now, this key is no longer present. In 15.4 and above, is there a key or a file I can query to find a value or string that will help me verify if the client computer has our TeamView Host installed?