i like "critical infrastructre." this is because, while i understand that the roots need golden space, and i can almost see that anycasted services need micro-allocations, i do not feel that tlds per se are critical in the sense that they need golden space. that would suggest an external reference to the term and other evaluation criteria than those proposed.
Also, could you elaborate on the difference between "micro-allocations" and "golden space"?
the use case for micro-allocation that ws used in arin, until cathy started screaming at me, was cnn.
there is a reason the dns maps from names to addresses. use it. Sure, we use anycast to support performant and resilient mapping.
i have sympathy for the anycast need. i do not have sympathy for non-anycast tds, and i run a number of them. randy