Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.
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GPO>Computer Config>Admin Templates>Windows Components>Windows Updates>Specify intranet Microsoft update service location
Which says
If the status is set to Disabled or Not Configured, and if Automatic Updates is not disabled by policy or user preference, the Automatic Updates client connects directly to the Windows Update site on the Internet.
Or you can under services.msc disable update services
and you could also manually remove wsus
How to manually remove all of WSUS