Ethereum Name Service

ICANN report backs DNS and onchain name coexistence

A new ICANN report finds that the same name can function across the traditional internet and onchain without conflicting versions of control, with the right safeguards. ENS views this as a possible path for DNS and onchain names to work together, and notes it has applied for .ens in ICANN's 2026 round — the report doesn't approve individual applications but supports the concept of one name across both systems.

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Ethereum Name Service

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The Ethereum Name Service (ENS) is a distributed, open, and extensible naming system based on the Ethereum blockchain.

ENS’s job is to map human-readable names like ‘alice.eth’ to machine-readable identifiers such as Ethereum addresses, other cryptocurrency addresses, content hashes, and metadata. ENS also supports ‘reverse resolution’, making it possible to associate metadata such as canonical names or interface descriptions with Ethereum addresses.

ENS has similar goals to DNS, the Internet’s Domain Name Service, but has significantly different architecture due to the capabilities and constraints provided by the Ethereum blockchain. Like DNS, ENS operates on a system of dot-separated hierarchical names called domains, with the owner of a domain having full control over subdomains.

Top-level domains, like ‘.eth’ and ‘.test’, are owned by smart contracts called registrars, which specify rules governing the allocation of their subdomains. Anyone may, by following the rules imposed by these registrar contracts, obtain ownership of a domain for their own use. ENS also supports importing in DNS names already owned by the user for use on ENS.

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