Ethereum Name Service (ENS) is a decentralized, open, and Ethereum-based dApp that allows the user to set up an easy and human-readable domain name for their Ethereum address.
https://www.altcoinbuzz.io/reviews/altcoin-projects/an-overview-of-ethereum-name-service-ens/
https://www.altcoinbuzz.io/reviews/altcoin-projects/an-overview-of-ethereum-name-service-ens/