DNS Demystified
Interactive guide to understanding DNS
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What is DNS?
The Domain Name System () is like a phone book for the internet. It translates human-friendly domain names into that computers use to communicate.
🧠 What Humans Remember
google.com
youtube.com
github.com
💻 What Computers Need
142.250.80.46
142.250.190.174
140.82.112.4
example.com
🔄DNS
93.184.216.34
DNS bridges the gap between human-readable names and machine-readable addresses
Try It Yourself
Enter a domain name to see its IP address:
A Brief History
1970s
HOSTS.TXT
A single file at Stanford maintained all hostname-to-IP mappings. Everyone downloaded it to stay updated.
1983
DNS is Born
Paul Mockapetris invented DNS (RFC 882 & 883). A distributed, hierarchical system that could scale with the growing internet.
Today
Trillions of Queries
DNS handles over 1 trillion queries per day. It's the backbone of the internet, yet invisible to most users.
🌳
Hierarchical
Organized as a tree from root to domains
🌐
Distributed
No single point of failure
⚡
Cached
Responses cached for performance
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