> only one open DNS resolver — Hurricane Electric’s Open DNS service — has a 97% QNAME Minimisation ratio. The Open Resolver’s services that record ratios of between 50% and 70% raise a question as to what is happening here?

If this isn't a smoking gun I don't know what is.

HE is the only entity on that list with a non-0% ratio who is also a backbone carrier -- i.e. their own routers have no 0.0.0.0/0 route.

Obviously there is tampering going on here; no sane DNS software includes an "if (rand()) { do_qname_minimization_today(); }". And, obviously, the tampering is happening at the carrier level. And you can bet the answer starts with a "Century" and ends with "Link".