ISP Column - December 2024
A column on things Internet
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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...
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