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   Julia's Reruns Bot (b0rk_reruns@social.jvns.ca)'s status on Wednesday, 10-Jul-2024 03:25:29 JST Julia's Reruns Bot

   the root nameservers

   Permalink: https://wizardzines.com/comics/root-nameservers/

   • GreenSkyOverMe (Monika) repeated this.
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     GreenSkyOverMe (Monika) (greenskyoverme@ohai.social)'s status on Wednesday, 10-Jul-2024 03:28:16 JST GreenSkyOverMe (Monika)

     in reply to

     @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.

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     GreenSkyOverMe (Monika) (greenskyoverme@ohai.social)'s status on Wednesday, 10-Jul-2024 03:30:13 JST GreenSkyOverMe (Monika)

     in reply to

     @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.

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     GreenSkyOverMe (Monika) (greenskyoverme@ohai.social)'s status on Wednesday, 10-Jul-2024 03:30:46 JST GreenSkyOverMe (Monika)

     in reply to

     @b0rk_reruns On panel 4 there is a duplicate "know".