In PowerShell we can use Get-GPRegistryValue cmled to identify the registry key(s) associated with:
More information about Get-GPRegistryValue can be found on this link:
For Enabled we get:
Specifies the string that appears for DirectAccess connectivity when the user clicks the Networking notification area icon. For example, you can specify “Contoso
Intranet Access” for the DirectAccess clients of the Contoso Corporation.
If this setting is not configured, the string that appears for DirectAccess connectivity is “Corporate Connection”.
At least Windows Server 2008 R2 or Windows 7
For Disabled we get: