What Is a Domain Name
What a Domain Name Is and Why It Exists
What is a domain name? A domain name is a human-friendly label, such as example.com, that identifies a website or other online service. Computers do not find each other by name. They use IP addresses, which are numeric labels such as 192.0.2.10. A domain name gives people a readable address to remember and share instead of a string of numbers.
The link between the two is made by the Domain Name System (DNS), a distributed directory that answers one question: which numeric address belongs to this name? Because of that directory, the owner can change servers and visitors keep using the same name. The parts of a name, such as the extension, are explained in the parts of a domain name.
Why Domain Names Are Rented Rather Than Bought
People often say they bought a domain, but in practice they register it for a set period of one year or more. The registration is recorded in a database run by the registry for that extension, and a company called a registrar sells access to that record.
This means a domain is a license to use a name, not permanent property. To keep it, the registration must be renewed before it expires. If it lapses, the name is eventually released and anyone can register it. A domain is therefore a recurring commitment, and it should be managed like any other subscription.
Example: Moving a Website Without Changing the Name
A bakery registers a domain name and points it at a website on a hosting server. A few years later, the bakery moves its site to a different provider with faster servers. Customers keep typing the same address and notice nothing. The name never changed. Only the record that points it to the new server was updated.
The registration itself was never touched. This is why a domain and the hosting behind it are separate services that can be changed independently.
Frequently asked questions
Is a Domain Name the Same as a Website?
No. A domain name is the address used to reach a website, an email service or another online resource. The website is the files and software that run on a server. One domain can point to a website, to email, or to nothing at all, and a single website can be reached through several domain names. For the difference between a domain and a full web address, see domain vs URL.
What Happens If I Forget to Renew My Domain Name?
If a domain expires, the website and email linked to it can stop working. Most registrars allow a grace period after the expiry date, and the registry may then hold the name for longer before releasing it. Turning on auto-renewal and keeping contact details up to date reduces the risk of losing a name.