DNS (Domain Name System)
Domain Name System
A system that translates domain names into IP addresses, enabling connections to websites
In Simple Terms
DNS is the system that maps the domain names we use to the IP addresses computers rely on. When you visit a website, you type something like "google.com" — a name that's easy to remember. But computers can't locate anything by name alone; they need a numerical IP address to know where to go. That's where DNS steps in: it translates the human-friendly name into the number a computer understands. Think of it as the internet's address directory, always ready to point you in the right direction.
Behind the Name
Domain Name System — Domain · Name · System. "Domain" means a territory or zone, "Name" means a label or identifier, and "System" means a mechanism or framework. It's called this because it's a system that manages the names assigned to domains (territories) across the internet and directs you straight to the right destination.
Take a Closer Look!
DNS — short for Domain Name System — is the technology that links the human-readable domain names we type to the IP addresses computers use to communicate.
It's a foundational part of how the internet works, quietly running in the background every time you go online.
When computers talk to each other over the internet, they identify one another using numerical addresses like "192.0.2.1" — called IP addresses. Memorizing strings like that for every site you visit would be a nightmare.
That's exactly why DNS was built: so we can type something memorable like "google.com" and still reach the right destination.
Every time you enter a URL in your browser, your device sends a query to a DNS server behind the scenes — essentially asking, "What's the IP address for this domain?" The DNS server looks it up and replies with the answer. This process is called name resolution.
Thanks to DNS, you can browse websites all over the world without ever having to memorize a single IP address.