referring to bouldering.it everyplace in vicinity to the alps is labelled nord.
the red letters indicate the county:
SO = around Sondrio, valtellina; this is basically the big EW-Valley between lago di como and alto adige/Trento (which is TN). there are the areas described in clim.valtellina (Val masino, val di mello etc.)
VB = around Verbano-Cusio-Ossola; mainly the valley n' of lago di como; good to reach from cresciano/magic wood.
then there's CN (Cueno) and TO (Torino), these areas are more off to the south and west; better to combine with some french alps.
they show also some areas in TN and BZ which correponds with the areas in the Dolomites (BZ; Bolzano) and the Brenta (Lago di Garda).
most of the locations can be found with these route planning web things.
val di mello/val masino is really nice and after 2 (3?) events of melloblocco there should be enough to do: maybe in august the place is crowded (holiday time in italy)...but that may be likely for the whole alps ;-)
good bouldering in alto adige (except for passo di sella...)
some areas in VB (monte, foppiano) and that cimaganda look promising (though i haven't been there).
hth