A column on things Internet Other Formats: DNS Nameservers December 2024 It's common folklore in the Domain Name System that a delegated domain name must be served by 2 or more nameservers. The logic for this is based in a desire for service resilience. If one server is unreachable then hopefully the other is not, and recursive resolvers when presented with a list two or more nameservers for a domain will work through this list until it queries a nameserver that is responsive. This simple descri...