How the Internet Works
At: Your Device
Before we start
You click a link.
Somewhere between your finger leaving the mouse button and the page appearing, your request travels to a machine that could be on the other side of the planet — and comes back. All of it in well under a second. Scroll to follow it, hop by hop.
Step 1
Your device
Every device on a network has an address — an IP address — the same way every house has a postal address. Your laptop or phone wraps your request in a small digital envelope addressed to where it's going, and hands it off.
Step 2
Leaving the building
The envelope first reaches your home router — the box quietly blinking in the corner. Its job is simple: take everything leaving your house and forward it toward the wider internet.
Step 3
Your ISP
Next it lands with your Internet Service Provider — the company whose cables or towers actually connect your home to the internet backbone. From here your request joins millions of others moving in and out every second.
Step 4
Finding the address (DNS)
There's a catch: you typed a name, like example.com, but the internet only understands numbers. So your request makes a quick detour to a DNS server — essentially a phonebook — which converts that name into the actual IP address of the destination.
Step 5
The journey
With an address in hand, your request sets off — bouncing between routers operated by different networks around the world, each one reading the address and forwarding it one step closer, like a very fast game of pass-the-parcel.
Step 6
The server
Eventually it arrives at the server that actually holds what you asked for. The server reads the request, prepares a response — a webpage, a photo, a video — and packages it back up to send.
Step 7
The trip back
The response makes the exact same journey in reverse: server → routers → your ISP → your router → your device. Whichever app you're using unwraps the envelope and shows you what's inside.
Step 8
Blink and you'd miss it
A round trip like this usually takes somewhere between 20 and 150 milliseconds — faster than a human blink. It happens continuously, for every image, script and request a page needs, thousands of times a second, all over the world.