Explain Like I'm Five

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Do dns server federeate and who is the authority on a given domian name (programming.dev)

submitted 1 week ago by cactus_head@programming.dev to c/explainlikeimfive@lemmy.world

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Somelse asked about what is DNS, but how are there multiple DNS server. You can buy a domain from cloudflare like say example.org, but how does clouflare get to claim that domain as it's own, and how can there be DNS outages when there are multiple DNS servers? Is there a DNS authority? And does every government have there own DNS servers that point to the main ones?

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[–] mhzawadi@lemmy.horwood.cloud 6 points 6 days ago

DNS is more a tree then a flat network, the root DNS servers host all the top level domains. Think .com and .UK and all the country codes.

Below that are DNS servers that host sub domains, below that are caching DNS servers that an ISP might run or your own DNS.

What is added to root DNS servers is in the hands of IANA, they allow new top level domains and where sub domains live.

The sub domain DNS servers are managed by the owners of that sub domain, so I own horwood.biz and can decide where that domain is hosted and what the hosts in the domain resolve to.

When you look up my domain, you might find that a query to a root DNS server is done to find the owner of .biz and then from that a query to find my DNS server and finally a query of the DNS server for horwood.biz.