How to Understand DNS, the Internet’s Phonebook

💻 Tech Basics · 5-card lesson · 🔒 Premium

A cheerful owl wearing glasses and a graduation cap while holding a book

Preview — The Goal

🎯 The Goal: You type 'google.com' and a website appears — but computers don't speak words, they speak numbers. Every site lives at a numeric IP address (something like 142.250.80.46), and the DOMAIN NAME SYSTEM (DNS) is the internet's phonebook: it translates the name you typed into the number your browser actually dials, in milliseconds, billions of times a day. Understanding this one invisible step explains a shocking number of 'the internet is broken' moments — and gives you a couple of genuinely useful power moves.