If GNU Project ever wanted to run a free Google alternative, GNUgl at gnu.gl would be a great fit.
Once they become a community project, rather than the rms fan club, I'll talk to them.
Until a year or two ago (can't remember exactly) it wasn't possible to register a "naked" .ar domain and they were reserved for very special cases (government mostly). It had to be a .com.ar or .org.ar etc.