TTL 33
We type them, we click them, we rely on them every day.
They’re in every link, every email, every search result.
But ask most people what a domain name actually is—and how it works—and you’ll likely get a blank stare.
That’s not surprising.
Domains are so deeply embedded in our online experience that they’ve become invisible. We interact with them constantly, but rarely stop to think about what they are, why they exist, or how they shape the web.
But if we don’t understand them, we can’t truly understand the web. And in a world increasingly run by algorithms, platforms, and AI agents, understanding how the web actually works isn’t optional—it’s power.
Since I work with domains every day, I thought I’d share a few insights—starting with the basics: what domains are, how they work, and why they matter more than ever.
What’s a domain?
Let’s start with the obvious: google.com is a domain name. So is wikipedia.org. Or ttl.blog.
If you had to explain it simply, a domain is the address to a website you type into your browser.
But actually, it’s a bit more sophisticated: it’s a record in a global, distributed database that tells the your browser where to go when you type something.
Once you register a domain, it becomes your slice of the internet.
You can connect it to a website, use it for custom email addresses, link it to remote file storage, a smart-home device, a car—or even just a simple page that says: this is me.
Think of it like a railroad switch: the domain doesn’t carry the train—it decides which track to send it down. Type a domain name, and your device follows the instructions tied to that name to reach the right destination.
And this isn’t theoretical or marginal: if the root zone were deleted tomorrow, platforms like Facebook, Google, and GitHub would disappear from your browser.
Not because they stopped existing—but because your device would no longer know where to find them.
How it works
Computers talk in numbers. To reach a website, your browser needs an IP address—something like 142.250.184.206.
(That’s one of Google’s, by the way.)
But you wouldn’t want to memorize or type that, would you?
So a domain is basically a human-friendly shortcut to something a computer understands.
When you type google.com, your device performs a quick lookup to translate that into the correct IP address.
This whole process is powered by something called the Domain Name System, or DNS—a massive, global network of servers that ensures everyone ends up on the right page when they type in a name.
So:
- The domain name is what you type (like
example.com) - The DNS is the system that finds the matching IP address
- The website is a thing hosted at that address (text, images, cat videos…)
Many other services can benefit from a domain name, websites are just the most popular, with email being the other ubiquitous one.
The paradox of everyday invisibility
The Domain Name System is everywhere—and almost completely invisible.
It works so well, and so quietly, that we forget it’s even there. But it’s been running the internet for over 40 years.
It’s like plumbing: essential infrastructure, hidden from view, mostly ignored until something breaks.
Part of the problem might be us—the people who work in the industry. We haven’t exactly made it easy for others to understand or visualize how it all works.
Case in point: when we needed to shorten “domain names”, we picked “domains” (smart move, now it sounds like something between a real estate deal and a medieval land grab) instead of “names”.
But actually, that’s what a domain name really is: a name—your name—online.
A pointer to where you are, what you do, and what you stand for.
Only 3% of the Internet has a name
Most of us build our online lives on platforms we don’t control.
We post, publish, share, and connect on “rented land” (like social media, for instance).
Owning a domain doesn’t mean launching a complex website or running a business.
It simply means having an address—a stable, independent place on the internet that points to you.
Something no algorithm can bury, no platform can take away, and no trend can erase.
But only 3.4% of internet users actually own a domain—
a tiny number, especially considering that 100% of us use them, every single day.
This isn’t just about adoption.
It’s about a missing layer of digital literacy.
Because if we want a more open, user-owned internet, we have to start with the basics.
Not just helping people use the web—but helping them understand it.
And maybe—finally—giving them a name to call their own.
That’s it for today, see you next week.
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I also publish on paolo.blog and monochrome.blog.
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