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ENS maps blockchain addresses to readable names such as alice.eth or alice.id. Names are hierarchical: whoever owns e.g. brand.eth can issue [username].brand.eth to a user, a product, or a community member, giving everyone an identity inside a shared namespace. Namespace is the infrastructure for issuing ENS subnames. We provide no-code apps, APIs, and SDKs for issuing and managing ENS subnames, so developers can give every user, agent, or resource a name of its own.

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Choose where subnames live

Subnames can be issued on Ethereum, on an L2 chain, or through an offchain service. All 3 work the same, but they differ in cost, control, and ownership.
Start with offchain subnames when you need gasless, high-volume issuance. Choose Ethereum or an L2 chain when holding the subname as an onchain asset is a product requirement.

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Choose your path

Integrate Subnames into your product

Add subname issuance or resolution to an app, wallet, agent, or chain.

No-code onchain subnames

Activate an ENS name and manage onchain subnames in the Namespace App.

Issue offchain subnames

Configure a resolver, create API keys, and manage gasless subnames.

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Learn the concepts

Learn about Subnames

Compare Ethereum, L2, and offchain subnames in more detail.

About Namespace

Learn how Namespace products fit into the ENS ecosystem.

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Get help

Namespace Builders on Telegram

Ask a technical integration question in the Namespace Builders group.

ENS x AI on Telegram

Join the community working on ENS and AI apps, tools, and standards.