SearchSpecificNetworks

It's not currently possible but it's in the developers ToDo list. However, you can use a workaround for now for the GTK GUI.

Add a Network column to the Results* tab:

File->Settings->GUI->Columns titles->Results->Add->Network %%%
or right click on a column header of the Results tab, then Add column after->Network

• Search anything you want

Go to Results* tab. Now, you can identify from which network each result comes from.