Let's say I own two servers with the static IPv4 addresses a.a.a.a and b.b.b.b. Can I run my own DNS servers on them, so me and my friends can set a.a.a.a and b.b.b.b in our resolvers' settings, anywhere in the world, and have our own toy DNS root zone, where we can register any domain names we want on any level, without ever depending on registrars? Something like an internal DNS, but without the boundaries of a private network. If not, what exactly would be stopping me?
