Re: Numbering nameservers and resolvers

for authoritatuve servers, i try to have one on a very different backbone on a distant continent. i make deals with friends. there have been just too many failures where servers were in the same facility, or behind the same routing, or on a single backbone. see rfc 2182. for customer- and infrastructure-facing caches, i try for as different routing domains and peering/x-stream exits as i can while keeping them easily reachable by their clients. randy