Using the https://ens.domains/ is there a way to query the ENS name service using an API endpoint and get a JSON response? I want to be able to integrate these eth addresses into my application.

2 Answers 2


Cindercloud has a rest-endpoint which is specifically designed for this.

Documentation on this endpoint can be found here.

  • that requires signing up for that service. etherscan.io/enslookup -- etherscan has a free lookup tool, but i'm not sure how to output the json api Jun 10, 2019 at 16:19
  • Instead of using the rapidapi endpoint, you can also use api.cinder.cloud. It's rate limited, but free.
    – Qkyrie
    Jun 11, 2019 at 8:19
  • Looks like you own that api restpoint, hence the bias. thanks anyways. I want to just do a simple call to retrieve what a .eth domain resolves to. why is it so difficult to do? Jun 11, 2019 at 14:45
  • I do indeed. It's not that difficult, it's just calling the ENSResolver contract on chain with the correct data, but you asked for an API endpoint which returns a json result and I happen to have something like that, which is why I proposed it as a solution :)
    – Qkyrie
    Jun 12, 2019 at 14:13
  • Do I need to install any other js libraries or sign up for some token key id? Jun 12, 2019 at 15:24

Old question, but this was the first result on Google. Since 2019, Cloudflare now hosts a free Ethereum web resolver. You can read more here: https://blog.cloudflare.com/cloudflare-distributed-web-resolver/

The ethers.js project is a fantastic, easy to use, web-ready Ethereum client that supports many providers, one of which being a CloudflareProvider (https://docs.ethers.io/v5/api/providers/api-providers/#CloudflareProvider)

So resolving an ENS address to a wallet address is now as easy as:

(Last updated November 22, 2023)

  1. Install ethers.js, with npm for example:
npm install ethers

  1. Import the module:
import { ethers } from 'ethers'
  1. Resolve:
const provider = new ethers.CloudflareProvider()
const address = await provider.resolveName('vitalik.eth')

// Outputs 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045

Happy coding :)

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