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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 03:28:16 JSTGreenSkyOverMe (Monika)