What Actually Happens When You Type a URL? — How DNS Works

What actually happens when you type a URL and hit Enter? In this video, you'll learn exactly how DNS works — step by step, from your browser all the way to the server that holds the answer. Every time you visit a website, a silent process runs in the background to translate a domain name into an IP address. Most people never think about it. By the end of this video, you will. We'll build your understanding from the ground up: ◼️ First, you'll learn what DNS is and why the internet can't function without it. ◼️ Then, we'll walk through how your browser checks its own cache before making any network request. ◼️ After that, we'll cover the hosts file — and why it always wins over everything else. ◼️ Next, we'll trace the full resolution chain: resolver, root servers, TLD servers, and authoritative nameservers. ◼️ Finally, you'll understand what DNS-over-HTTPS is and why it matters for your privacy. ⏱️ Timestamps 0:00 - Why Do We Need DNS? 0:24 - What Is DNS? 1:02 - How Does DNS Work? ✅ Free Python Courses https://www.youtube.com/@turtlecode/courses By the end of this video, you'll have a clear picture of what's happening under the hood every time you visit a website — without unnecessary complexity.