I built an interactive visualizer for what actually happens when you enter a URL
I've always found networking difficult to learn from static diagrams.
You learn things like:
DNS → IP → ARP → Gateway → Router → Internet → Server
…but when you actually type a URL into your browser, what is really happening at each step?
That's why I started building Network Atlas.
👉 https://learn.dailytechminds.com
Start with the concepts. Then watch them happen.
If you're completely new to networking, don't jump straight into the simulator.
The idea is to first understand the networking concepts, then use Network Atlas to visualize how they connect together during a real web request.
The learning flow I'm aiming for is:
** Learn the concept → Run the simulation → Inspect the decision → Build the mental model**
For example, you can learn what a subnet, gateway, MAC address, ARP, or DNS actually means — and then see where that concept fits into the journey of a web request.
What Network Atlas explores
- DNS resolution
- Browser and cache concepts
- OS resolver
- IP addresses and ports
- Private IPs and subnets
- Default gateway
- MAC addresses
- ARP
- Local network → Internet
- Routing decisions
- Packets and network hops
- HTTPS/TLS concepts
- Server-side request flow
- Network topology
- Event timeline
- Step-by-step mode
- Real-time mode
- Decision Inspector
The Decision Inspector is one of the parts I'm most interested in.
Instead of just showing:
>
I want the tool to answer:
>
That's the difference I'm trying to make.
Who is this for?
If you're learning networking from scratch:
Learn the concepts first, then use the visualizer to connect everything together.
If you're a developer:
Use it to understand what actually happens between entering a URL and receiving a response.
If you already know networking:
This is where I need your help. I'm trying to make the simulation technically accurate, so I'd love to know where my mental model or implementation is wrong.
The goal isn't to replace Wireshark, browser DevTools, or actual network monitoring.
It's an interactive mental model of the web request journey.
I'm still building it, and I'd genuinely love feedback from people who know networking.
What networking concept was hardest for you to understand when you were starting out?
And if you could visualize one part of the request lifecycle, what would you want to see?