ENS vs Unstoppable Domains: Web3 Names Compared

By bestcloudmining editorial desk · updated 2026-09-24 · facts checked 2026-09-24

table of contents

1. Two philosophies of a name
2. ENS: a DAO-governed protocol
3. ENS: cost and expiry
4. Unstoppable Domains: a one-time model
5. Cost over time: rent versus buy once
6. Which one should you use?
7. The bottom line

Two philosophies of a name

Both systems issue names as ERC-721 tokens, so at the token level they look similar: you hold a transferable asset in a wallet. The resemblance stops at the rules around it. ENS defines a namespace with registrars that set allocation rules, and gives the community a governance process over that namespace [1][2]. Unstoppable builds a commercial product with its own contracts and a company behind the minting and support. If you care about who can change the rules, that distinction matters more than the token standard.

ENS: a DAO-governed protocol

ENS is a distributed, open and extensible naming system on Ethereum that maps names like alice.eth to addresses, content hashes and metadata, and supports reverse resolution from addresses back to names [2]. Top-level domains are owned by smart contracts called registrars that specify the rules for allocating names, and the .eth registrar issues names as tokens on Ethereum [2]. The ENS root node is owned by the ENS DAO, which can add or replace TLDs, enable or disable registrar controllers, update .eth pricing and receive registration revenue [1]. A registration is a registrar record of ownership that stores the expiry date and the fees paid [1]. In short, ENS is infrastructure with a public governance process, not a shop.

ENS: cost and expiry

ENS publishes its .eth prices openly. A name with five or more characters costs 5 dollars in ETH per year; a four-character name costs 160 dollars per year; a three-character name costs 640 dollars per year, and there is no maximum registration duration [1][3]. Forgetting to renew is the main way people lose names. After expiry there is a 90-day grace period to renew, then the name is released for anyone to register with a temporary premium that decreases over 21 days; until a new owner overwrites it, the released name continues to resolve to the old address [1]. The registrar is built so that once issued a name cannot be revoked or taken from its owner - loss comes from losing the private key or forgetting to renew [1]. Renewal is a recurring obligation, not an optional extra.

Unstoppable Domains: a one-time model

Unstoppable Domains builds UNS, where every domain is an ERC-721 token that owners can manage from any compatible wallet, exchange or marketplace [4]. The architecture page is explicit: domains are owned irrevocably, do not need to be renewed, and cannot be reclaimed by Unstoppable Domains; once minted, the owner controls the domain, and the registry is designed without an admin who can transfer it without the owner's permission [4]. UNS supports multiple domain endings and stores records in the registry itself, and Unstoppable's resolution service can return an address for any of more than 310 supported cryptocurrencies from a single domain name [4][5]. The company now also runs a registrar and marketplace for traditional domains, while the web3 names remain a one-time purchase [6].

Cost over time: rent versus buy once

Put the two cost models side by side and the trade-off is clear. ENS charges a small yearly fee for five-or-more-character .eth names and much more for short names, and that money recurs for as long as you keep the name [1][3]. Unstoppable charges once at purchase, and there is no renewal, so the long-run cost is fixed at signing [4]. Over many years a one-time purchase can look cheaper, but a yearly fee keeps the protocol funded and lets an expired name return to the pool for others. There is also a market dimension: because both types of name are transferable tokens, the price you pay can be dominated by the resale market and by the name itself rather than the protocol fee [1][4].

Which one should you use?

It depends on what you optimise for.

• Choose ENS if you want a widely integrated, DAO-governed standard on Ethereum, DNS interoperability through the DNS registrar, and you accept annual renewal [1][2].
• Choose Unstoppable if you want a one-time purchase, no renewal bookkeeping, and a name that resolves to many chain addresses; accept that it is a company product built on its own contracts [4][5].
• If you are a builder, check integration: a name only works where wallets and apps have added resolution support. ENS documents its resolution and resolver stack publicly, and Unstoppable publishes a resolution service and smart-contract path for UNS and the older CNS [2][5].
• If you are buying as an investment, remember both models can let a name lapse or be transferred, and ENS's 90-day grace plus 21-day premium is a hard deadline that destroys value if missed [1].

Compare live naming providers under naming and best naming, including reviews such as ENS and Unstoppable Domains; Handshake and Freename are the other models worth knowing before you commit.

The bottom line

ENS and Unstoppable Domains are not two brands selling the same thing; they are a protocol and a product. ENS rents names by the year, governs them through a DAO and integrates with DNS [1][2]. Unstoppable mints ERC-721 names once, states that they never need renewal and cannot be reclaimed, and resolves a wide range of currencies from one name [4][5]. Pick the model whose failure mode you can live with: a missed renewal with ENS, or dependence on one company's contracts with Unstoppable. Whichever you choose, treat the name as a key you must not lose, because neither model can recover it for you.

FAQ

Do I own my ENS name outright?

You hold it as a token and can transfer it, but it is registered for a term you renew. The registrar is built so a name cannot be revoked from its owner, but it can lapse if you stop renewing.

Do Unstoppable Domains need to be renewed?

No. The architecture documents domains as owned irrevocably, with no renewal and no way for Unstoppable to reclaim them once minted. You still have to protect the wallet key that controls them.

Why are three and four character .eth names so expensive?

ENS prices short names far higher to reflect scarcity. The published rates are 640 dollars per year for three characters, 160 for four, and 5 for five or more.

What happens if an ENS name expires?

There is a 90 day grace period to renew, then the name is released to anyone with a temporary premium that falls over 21 days. Until a new owner overwrites the records, the name still resolves to the old address.

Which one works in more wallets and apps?

It depends on integration, not on the model. ENS documents an open resolution stack on Ethereum, while Unstoppable publishes a resolution service and smart contracts for its domains. Check support before you buy.

Sources

1. ENS Docs - FAQ (pricing, renewal, grace period, DAO root) - accessed 2026-09-24
2. ENS Docs - The Protocol - accessed 2026-09-24
3. ENS Docs - ETH Registrar - accessed 2026-09-24
4. Unstoppable Domains - UNS Architecture Overview - accessed 2026-09-24
5. Unstoppable Domains - Resolution Overview - accessed 2026-09-24
6. Unstoppable Domains (registrar and marketplace) - accessed 2026-09-24

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