The wast majority of those domains are either redirects or do not resolve at all, which is what I got when randomly testing them. I would expect that many of th

The wast majority of those domains are either redirects or do not resolve at all, which is what I got when randomly testing them. I would expect that many of them are also be parked at dns service companies. They could apply some efficiency but it would be terrible in term of cost savings. There doesn't seem to be a registration costs (at least not that I can find). DNS service companies might take a $0-50 fee per year per domain? It is a very small number in a very large budget for a government entity.