What is a domain and how does it work?
Updated: 2026-07-18 · YaDominios
A domain is your site's address on the internet (for example, yourcompany.com). You register it for years through a registrar like YaDominios, and the DNS system translates it into the address of the server where your page lives.
The parts of a domain
A domain has two main parts. In yourcompany.com: “yourcompany” is the name you choose (the SLD) and “.com” is the extension or TLD. There are hundreds of extensions: classic ones like .com, .net, and .org, and modern ones like .ai, .io, .store, or .dev.
How it works under the hood
When someone types your domain in a browser, the DNS system (a kind of phone book for the internet) turns it into the IP address of the server where your page or email lives. That's why you don't lose your domain when you change hosting: you just point the DNS to the new place.
Do you buy or rent a domain?
A domain is registered for terms of 1 to 10 years and it's yours as long as you renew it. At YaDominios the domain stays in your name as the owner: you control its configuration, renewal, and transfer, and you can move it to another registrar whenever you want.
Domain, hosting, and website: three different things
- Domain: the address (yourcompany.com).
- Hosting: the server where your page lives.
- Website: the content people see.
You can get all three together at YaDominios, or just the domain and point it wherever you prefer.
Frequently asked questions
Can I buy a domain forever?
There's no permanent purchase: domains are registered for 1 to 10 years and renewed. As long as you renew on time, the domain is yours with no limit.
What if someone already registered the name I want?
You can pick another extension (like .net or .ai), tweak the name, or make an offer to the current owner. The YaDominios search shows available alternatives instantly.