What Is Ethereum Name Service?

The Ethereum Name Service (ENS) is a decentralized domain name system built on the Ethereum blockchain. Its primary function is to convert long, unreadable Ethereum addresses like 0xAB21… into easy-to-read names such as alice.eth. Much like how the traditional DNS (Domain Name System) maps IP addresses to domain names, ENS makes blockchain addresses more accessible and user-friendly. Beyond just wallet addresses, ENS can also map human-readable names to metadata, smart contract addresses, content hashes (for decentralized websites), and even cryptocurrency addresses on other chains. This not only simplifies the user experience but also enhances the way digital identities are managed across the Web3 ecosystem.

ENS functions similarly to the traditional Domain Name System (DNS) but is tailored for the Ethereum blockchain. It comprises three core components:

ENS Registry: A smart contract that maintains records of all registered domains and subdomains, including ownership details and associated resolvers.
Registrars: Smart contracts are responsible for the allocation of domain names, particularly top-level domains like “.eth.” These domains are issued as ERC-721 NFTs, granting users verifiable ownership.
Resolvers: Smart contracts that translate ENS names into machine-readable addresses, such as Ethereum wallet addresses or content hashes for decentralized websites.

This architecture allows for seamless integration of ENS names across various decentralized applications (dApps), wallets, and services, fostering a more intuitive user experience.

ENS Adoption and Market Dynamics

Rapid Growth in Domain Registrations

ENS has witnessed significant growth in domain registrations over recent years:

2022: Approximately 500,000 domains registered.
2023: Registrations surged to 1.2 million, marking a 140% year-over-year increase.
2024: Registrations further escalated to 3.5 million, a 191% increase from the previous year.

This upward trend underscores the growing demand for decentralized identity solutions in the Web3 ecosystem.

Market Capitalization and Token Performance

As of June 25, 2025, the ENS token is trading at approximately $18.89, with a market capitalization of around $675 million. The token’s all-time high was $85.69, achieved on November 11, 2021.

Price predictions for ENS vary, with some analysts forecasting a potential rise to $33.96 by the end of 2024, contingent on broader market trends and increased adoption.

Security Considerations: Domain Re-registrations

A study presented at IMC 2024 highlighted concerns regarding the re-registration of expired ENS domains. Out of 3.1 million analyzed ENS names, approximately 241,000 were re-registered by new owners after expiration. This practice has led to instances where funds intended for the original domain owner were mistakenly sent to the new registrant, resulting in financial losses.

To mitigate such risks, users are advised to monitor domain expiration dates and renew registrations promptly.

ENS in the Broader Context of Web3

ENS is more than a naming service; it’s a foundational component of the decentralized internet. By enabling user-friendly identifiers, ENS facilitates broader adoption of blockchain technologies and supports the development of decentralized applications.

Its integration with various platforms and services enhances interoperability within the Ethereum ecosystem, positioning ENS as a critical infrastructure for the future of digital identity and decentralized web services.

In summary, the Ethereum Name Service is playing a pivotal role in shaping the user experience within the decentralized web by simplifying interactions and bolstering digital identity frameworks. As adoption continues to grow, ENS stands as a testament to the evolving landscape of blockchain technology and its potential to redefine online interactions.