Sites and Subnets Table Name or Query

Does anyone know of the table where I can find site or subnet info as it relates to package servers? I would like to associate a computer at a certain location and be able to grab the package server that's assigned to that location. This info is available if you go to the site settings page but I need to pull it via sql so I can run a workflow and use the package server as a variable.

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7.1 Sp2 Mp1