ENS is the governance token of the Ethereum Name Service, the decentralized naming protocol that maps human-readable names (e.g., “vitalik.eth”) to Ethereum addresses, content hashes, and other on-chain data. Launched by the Ethereum Foundation in 2017 and spun out as an independent DAO in 2021, ENS has become the de facto identity layer for the Ethereum ecosystem. Over 2 million .eth names have been registered, and ENS integration is standard across MetaMask, Coinbase Wallet, Rainbow, Uniswap, and most major DeFi protocols. The ENS token airdrop in November 2021 — distributing tokens retroactively to all .eth registrants — was celebrated as one of the most fair and well-designed in DeFi history.
How It Works
Domain registration:
- Users register .eth names for 1-year renewable terms via the ENS app
- Registration fee depends on name length:
5+ character names: ~$5/year (in ETH)
4-character names: ~$160/year
3-character names: ~$640/year - Names are stored as NFTs (ERC-721) in the registrant’s wallet
- Registration fees go to the ENS DAO treasury
Technical architecture:
- ENS uses Ethereum smart contracts to maintain a registry of names to resolver records
- Resolvers map names to Ethereum addresses, IPFS content hashes, or any arbitrary data
- CCIP-Read (EIP-3668) enables ENS to resolve names stored off-chain (for Layer 2 integration)
ENS governance:
ENS DAO controls the ENS treasury (registration fees) and votes on protocol upgrades, fee structures, and ecosystem grants. Notable: Brantly Millegan (former ENS director) was controversially removed from his position by a DAO vote in 2022 after past social media posts surfaced.
Tokenomics
| Allocation | Amount | Notes |
|---|---|---|
| Community airdrop | 25% | Retroactive to all .eth registrants by Nov 1, 2021 |
| Community treasury | 50% | ENS DAO-controlled for protocol development |
| Contributors | 25% | Team and early contributors (4-year vesting) |
Max supply: 100,000,000 ENS. The retrospective airdrop went to anyone who had registered a .eth name before the snapshot — including a multiplier for longer registration periods and active users.
Use Cases
- Human-readable addresses — Replace 0x hex addresses with memorable .eth names in DeFi, NFTs, and payments
- Web3 identity — ENS names are the standard profile identifier across wallets, DeFi, and social platforms
- Governance — ENS holders vote on ENS DAO proposals including treasury spending and protocol upgrades
- Content hosting — ENS names can point to IPFS websites, creating censorship-resistant decentralized websites
- Multi-chain — ENS is expanding to resolve names across multiple blockchains via CCIP-Read
History
- 2017 — ENS launches as an Ethereum Foundation project
- May 2019 — ENS upgraded from auction model to continuous registration (first come, first served)
- Nov 2021 — ENS constitutionalization: ENS Foundation formed as an independent Cayman entity; ENS token launches; 50M+ ENS tokens distributed as a surprise retroactive airdrop to .eth holders
- Nov 2021 — Airdrop receives widespread praise for fairness; ENS reaches $80+ per token at peak
- 2022 — ENS DAO votes on multiple treasury grants; new TLD (top-level domain) discussions emerge; director controversy
- 2023 — ENS passes 2 million unique registrations; expands to support L2 names via CCIP-Read
- 2024 — ENS Namechain (a dedicated L2 for ENS resolution) in development; ENS integrates with DNS namespaces (.com, .org names on Ethereum)
Common Misconceptions
“ENS names are only for sending crypto.” ENS names can point to any on-chain data: IPFS websites, social profile metadata, email addresses, Twitter handles, and other wallet addresses. They serve as a universal Web3 identifier.
“.eth names are owned forever after purchase.” ENS registrations must be renewed annually (or in bulk for multiple years). If a registration lapses, the name becomes available to anyone.