15 Feb, 24

What is Ethereum Name Service (ENS)?

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The Ethereum Name Service (ENS) is a distributed, open, and extensible naming system based on the Ethereum blockchain. It is designed to map human-readable names like ‘alice.eth’ to machine-readable identifiers such as Ethereum addresses, other cryptocurrency addresses, content hashes, and metadata. ENS operates similarly to the Internet’s Domain Name Service (DNS), but with a decentralized architecture that leverages the security and transparency of the Ethereum blockchain​​​​​​.

How ENS Works

ENS consists of two main components: the registry and resolvers. The registry is a smart contract that maintains a list of all domains and subdomains, storing information about their owner, resolver, and time-to-live for records. Resolvers are responsible for the actual process of translating names into addresses. ENS uses a hierarchical naming structure, allowing domain owners to have full control over their subdomains. For example, if you own ‘example.eth,’ you can create and configure subdomains like ‘wallet.example.eth’ or ‘website.example.eth’​​.

Use Cases of ENS

ENS simplifies the user experience in the Ethereum ecosystem by allowing people to use easy-to-remember names instead of long, complex hexadecimal addresses. This reduces the likelihood of errors when sending transactions or interacting with smart contracts. ENS can also be used to create more readable and memorable names for decentralized websites, making it easier for users to navigate the decentralized web​​.

Obtaining an ENS Domain

To obtain an ENS domain, you can check its availability and rent it on a yearly basis. Popular names were initially auctioned off, but now you can register available names directly. Once you own a domain, you can attach addresses, create subdomains, and even sell or transfer your domain if desired. The cost of an ENS domain includes auction costs (if applicable) and annual rental fees, which vary depending on the length and popularity of the name​​.

ENS Governance

ENS has launched a governance token as part of its transition to a decentralized autonomous organization (DAO). This allows token holders to participate in decision-making processes and contribute to the development and governance of the ENS ecosystem​​.


The Ethereum Name Service is a crucial component of the Ethereum ecosystem, providing a user-friendly way to interact with Ethereum addresses and decentralized applications. Its decentralized nature ensures security and transparency, while the governance model empowers the community to shape its future direction.


  1. What is the Ethereum Name Service (ENS)?
    • ENS is a decentralized naming system that maps human-readable names to machine-readable identifiers on the Ethereum blockchain.
  2. How does ENS work?
    • ENS uses a registry and resolvers to map names to addresses. Domain owners have control over their subdomains and can configure them as needed.
  3. What are the use cases of ENS?
    • ENS is used for simplifying transactions, creating readable names for decentralized websites, and improving the overall user experience in the Ethereum ecosystem.
  4. How can I obtain an ENS domain?
    • You can check the availability of a domain and rent it on a yearly basis. Popular names were initially auctioned, but now you can register them directly.
  5. What is the governance model of ENS?
    • ENS has transitioned to a decentralized autonomous organization (DAO) with a governance token, allowing token holders to participate in decision-making processes.

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