Atenção: nossos artigos estão disponíveis somente em inglês no momento.
What is ENS (Ethereum Name Service) and how do .eth names work?
ENS, the Ethereum Name Service, replaces a 42-character Ethereum address with a readable name like name.eth. Anyone can register a name, point it at their address, and share the name instead of the address. Wallets that support ENS look up the address behind the name when you .
Trezor Suite resolves ENS names when you send from an Ethereum account. For the steps, see Send to an ENS name on Ethereum.
What an ENS name does
An ENS name points at a wallet address. Whoever owns alice.eth sets the Ethereum address it resolves to, and anyone who sends to this name reaches that address.
A name can hold more than an address. The same resolver can store a website, an avatar image, an email address and social handles, which is why some apps show a name and a picture instead of an address. One name can also store addresses for several blockchains at once.
Your funds sit at the address, not in the name. The name is a label pointing to it, and the owner can change where it points.
How ENS resolution works
ENS runs on Ethereum mainnet. A registry contract records who owns each name, and a resolver contract stores the records that belong to it.
When you enter a name, your wallet asks Ethereum which resolver holds it, then reads the address record from that resolver. This is a read of public on-chain data, so it costs nothing and does not need a transaction.
Does ENS work on blockchains other than Ethereum?
The name itself lives on Ethereum mainnet, and so do its records. The addresses stored in those records can belong to other chains: one name can hold a Bitcoin address, a Dogecoin address, and separate addresses for EVM networks such as Base and Arbitrum.
Some names keep their records elsewhere. A subname such as alice.example.eth can hold its records on a Layer 2, while the parent example.eth stays on Ethereum mainnet.
Trezor Suite reads only the Ethereum address record, and only when you send from an Ethereum account or an Ethereum Sepolia testnet account. On Base, Arbitrum, Polygon, Solana, Bitcoin and every other network, the recipient field takes an address.
What to check before you send to an ENS name
Check the address the name resolves to, the same way you would check any address someone gave you.
Whoever controls a name decides where it points, and can change that at any time. A name you saved months ago may resolve somewhere new today.
Names also expire. A .eth name is registered by the year. If it is not renewed, it enters a 90-day grace period and keeps resolving to the same address throughout. It is then released for anyone to register, at first with an extra fee that falls to zero over 21 days. A name you trust today can belong to someone else later.
ENS blocks many lookalike names when they are registered, but not all of them. ENS says its own checks cannot rule out every visual similarity. Compare the name character by character against the one you were given.
Check the address the name resolves to. If your recipient gave you an address as well as a name, the two should match. If all you have is the name, look it up yourself in the ENS app and compare the address shown there with the one Trezor Suite found.
Looking the name up yourself only confirms that Trezor Suite read the record correctly. It cannot tell you that the record points where your recipient intended. If you are unsure, ask your recipient to confirm their address directly, or send a small amount first and check it arrives.
ENS names and your privacy
An ENS name is a public label on an address. Anyone who knows the name can look up every transaction that address has made and the balance it holds now.
Ethereum's account model already links your activity, because you reuse one address across mainnet, Layer 2 networks and other EVM chains. A name makes that history easy to find and to attribute to you, especially if it matches a username you use elsewhere.
If you want a public name, keep it on an account you use for public activity and keep your savings on a separate account.
For more on what a blockchain reveals about you, see Is crypto anonymous? Understanding privacy on the blockchain.
Registering an ENS name
Names are registered through the ENS app and paid for in ETH on Ethereum mainnet, plus gas.
There is no auto-renewal, so you extend the registration yourself before it expires.
Trezor Suite does not register or manage ENS names. You can connect your Trezor to a third-party wallet app such as MetaMask or Rabby and sign the registration there, which keeps your keys on the device.
For the full registration and renewal rules, see ENS documentation.
Key takeaways
ENS names replace an Ethereum address with a readable name. The registry that records them lives on Ethereum mainnet.
One name can hold addresses for several chains, but every lookup happens on Ethereum mainnet.
Trezor Suite resolves ENS names when you send from an Ethereum account. Every other network takes an address.
The owner can repoint a name, and a name left unrenewed can end up with someone else. Verify the resolved address on your Trezor before you confirm.
A public name ties an address, and its whole transaction history, to the person known by that name.