national allocations

=>> But inetnum has "country" field which is mandatory and if I look for
=>> related "route" object, it has "origin" field with AS number.

  My guess would be that in 9 out of 10 cases (or in 199 out of 200?),
  the concept of "country" in the Internet is not useful at all.
  
  Even if you manage to "properly" look at the geographical aspect, in
  general it doesn't tell you anything reasonable about connectivity, user
  community, and the like.
  
  Maybe the only exception is the exchange of a set of packets, from a
  legal point of view, when you are able to positively verify (by some
  magic) that source, destination and intermediate hops stay within
  national boundaries.
  
  -WW