> For the complete documentation index, see [llms.txt](https://docs.alldomains.id/protocol/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.alldomains.id/protocol/overview/what-is-a-web3-domain-tld.md).

# What is a Web3 domain/TLD

A **Web3 domain** is a human-readable and unique address that is easy to remember & communicate and can be used in place of a Public Key (more commonly known as a Wallet Address).

A **TLD** is the final component of a domain name and it’s the highest level in the hierarchical **AllDomains** registry.

{% hint style="info" %}
**\<human readable domain>.\<top-level-domain>**
{% endhint %}

Unlike Web 2 domains that are hosted on the global network of Domain Name System (DNS) servers, **Web3** domains leverage blockchain technology making them decentralized and more importantly allowing them to interact with blockchain apps and smart contracts.