Introduction: The Two Pillars of Web3 Naming
Web3 domains replace long wallet addresses with human-readable names. The two leading providers are Ethereum Name Service (ENS) and Unstoppable Domains. Both let you send crypto, host decentralised websites, and build identity on-chain. But they work differently in key areas.
This article breaks down what each system does, how fees work, which blockchains they support, and how censorship-resistant each platform remains. By the end, you will know exactly which service fits your needs.
1. How ENS and Unstoppable Domains Work
ENS runs on the Ethereum blockchain. It uses smart contracts to map a name (e.g. alice.eth) to an Ethereum address, content hash, or other metadata. ENS names are NFTs (ERC-721 tokens). You hold them in your wallet and can transfer or sell them on secondary markets like OpenSea.
Unstoppable Domains operates on the Polygon blockchain. Names end with extensions like .crypto, .nft, .x, .polygon, and over 150 others. Unstoppable Domains markets its names as a "lifetime purchase" — you pay once, hold forever. However, the underlying registry is not truly decentralised on all extensions.
How Fees Compare in Practice
- ENS: Annual renewal fees. .eth names cost about $5/year for a 5+ character name. Gas fees apply only during setup and renewal.
- Unstoppable Domains: No renewal fees. You pay a fixed price upfront (e.g. $20–$100+). But gas fees exist only on the Polygon chain during the initial minting.
- Resale market: ENS names trade on OpenSea, LooksRare, and Blur. Unstoppable names only trade on its own marketplace due to locked NFT metadata.
If lifetime ownership appeals to you, Unstoppable Domains looks cheaper. But if you value liquidity and open marketplaces, ENS wins. To get started with ENS, .eth domain registration remains one of the most straightforward processes on Ethereum.
2. Supported Zones and Censorship Risks
ENS follows the DNS standard. The .eth zone runs on Ethereum, but wallet integrations, DNS gateways, and dApp resolvers make names usable inside traditional browsers (e.g. eth.link). This means .eth names are accessible through browsers, but the gateway operator may apply restrictions. However, the core registry on-chain is permissionless — no admin can delete or freeze a name you own.
Unstoppable Domains supports a mixed model. For .crypto, .x, and .nft, it maintains a central registry that maps names to associated addresses. This central registry allows the company to freeze a name, swap an owner, or modify records without user consent. While still possible with resolution at the application layer, the censorship vector exists in the registry itself.
Censorship or control? Real examples
- ENS: 0 admin keys after migration to a Timelock contract. Only you can change your .eth name's records.
- Unstoppable Domains: Company recently removed a name from one wallet and transferred it to themselves after a trademark dispute. This is centralization in action.
If you value true self-custody, ENS is the clear winner. If convenience and a broad extension list matter more, Unstoppable Domains offers a large set — but with trade-offs.
3. Interoperability: Which Domains Work Where?
Wallet compatibility matters. MetaMask, Rainbow, Trust Wallet, and Rainbow Bridge support both ENS and Unstoppable domains at the app level. Many wallets now load ENS names automatically. For Unstoppable Domains, you often need to install a browser extension or set a specific resolver in your wallet's settings.
Unstoppable Domains also requires the dApp to call its API rather than just an ENS-compatible smart contract. This puts a centralised gateway between the user and the name. ENS reliance on Ethereum RPC makes it trivially portable.
Blockchain integration summary
- ENS works on all EVM chains because the resolver contract can point to any chain address.
- Unstoppable Domains ties names to Polygon. To use outside Polygon, you register the same name on a L1 API gateway — introducing additional points of failure.
For anyone building custom tooling, the open standard ENS wins hands down. If you need blockchain-agnostic tools, build on the more decentralised system.
4. Resale Markets and Liquidity
ENS names are liquidity-rich because they follow the ERC-721 standard. Sellers list on OpenSea, LooksRare, or Blur. You can also wrap ENS names (ERC-1155 wrapper) to gain more metadata / permissions. Buyers bid and trade freely on any marketplace.
Unstoppable Domains names are not full ERC-721 NFT. Their resolver contract locks metadata inside a central API endpoint. Marketplaces cannot check name ownership or display records natively. A secondary marketplace run by the company exists, but trades happen on an order book that Unstoppable controls.
Privacy and ownership notes
- ENS displays registrant address publicly — pseudonymous.
- Unstoppable Domains does not record full ownership history, but the central registry enables full control.
- ENS names expire; you can reclaim an abandoned name.
- Unstoppable Domains names never expire, but there is no recycling if the registry is switched off.
If you care about resale flexibility, liquidity, and open markets, .eth domains provide clear advantages. On the governance side, you can read the Ens Governance Proposal Idea page for insights into how the community suggests changes over time.
5. Which One Should You Choose?
Your choice depends on your priorities. Below is a quick decision matrix.
Choose ENS if you want:
- Self-custody & trustless control over your name
- Ability to trade on any NFT marketplace
- Standardised resolver system (works with 100+ wallets)
- Active DAO governance with ongoing proposals
- Names that can expire — you can claim good 3-character domains after they drop
Choose Unstoppable Domains if you need:
- Pay once; never worry about renewal
- A massive list of extensions (200+) in one platform
- Free Zillow-style subdomains (youname.crypto with unlimited subs)
- Simplest onboarding for non-Web3 users — single payment, no extra steps
Green flags and red flags—final comparison
| Feature | ENS | Unstoppable Domains |
|---|---|---|
| Renewal model | Annually renew | Lifetime (one-time fee) |
| Decentralisation | Fully on-chain (no admin) | Central registry (operator can modify records) |
| Marketplace support | OpenSea, Blur, Rare for all names | Own limited marketplace |
| Censorship ceiling | None at smart contract level | Company-level freeze possible |
| Governance | Community via ENS DAO; proposals change rules | Company-run |
Final Take: The Better Long-Term Bag
ENS leads when you decentralise on every front: storage, registry, secondary liquidity, and governance. Unstoppable Domains leads only when user education is minimal and renewal costs are zero upfront. For builders and true Web3 believers who want names to retain value and function without gatekeeping, the .eth option is superior. Start with .eth domain registration now and remain future-proof against central frictions.
Remember that your Web3 identity is only as trusted as its infrastructure. ENS keeps owners in full control;
Whichever system you pick, register early. Good domain names grow scarce in every TLD.