@b0rk_reruns Continued:
Each IP refers to multiple physical servers, you'll get the one closest to you.
There's a map at root-servers.org.
If they didn't exist, resolvers wouldn't know where to start.
Sad resolver thinks: I need to query c.ca-servers.net but where is that? I'm the DNS erver, I can't ask MYSELF for the IP address?!
Every resolver has the root IPs hardcoded in its source code.
Here they are: You can try making DNS queries to them. a.root-servers.net to m.root-servers.net and IPs.
@b0rk_reruns Image description:
Comic: The root nameservers.
Every DNS resolver starts at the root nameservers.
A resolver (box with arms) asks: What's the IP for example.com?
A root nameserver (box with crown) replies: You should ask a dot com nameserver. It's at a.gtld-servers.net.
root nameserver IP addresses almost never change.
a.root-servers.net's IP (198.41.0.4.) hasn't changed since 1993 (decades ago). There are thousands of physical servers, but only 13 IP addresses.
aw yeah this is happening
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