UN doesn't do RnD investment. They'd have no weapons or tech specs worth saving. They don't even log science. The UN's primary interest in information would be in international law and politics. There's no developmental merit to possessing the outdated files on how many second-hand US Armored Cars they had in the Congo.

So why do you keep shoehorning them in?

EDIT - The internet isn't UN property either and it would exist however it exists now with the only issue being state censors blocking people from certain sites. The internet would still be there.