How to reverse resolve an ENS name

Prerequisites

Before getting started, make sure you have the following ready:

• Node v.14+ or Python
• NPM/Yarn or Pip

Step 1: Setup Moralis

First register your Moralis account and get your Moralis API Key.

Once you have your Moralis API Key, install the Moralis SDK in your project.

npm

npm install moralis @moralisweb3/common-evm-utils

yarn

yarn add moralis @moralisweb3/common-evm-utils

pnpm

pnpm add moralis @moralisweb3/common-evm-utils

pip

pip install moralis

Step 2: Reverse Resolve ENS name

In order to reverse resolve the ENS name from an ETH address, Moralis provides you a resolveAddress endpoint to do so.

Here you'll need one parameter: address.

Once you've obtained the address, you can copy the following code:

index.js (JavaScript)

const Moralis = require("moralis").default;
const { EvmChain } = require("@moralisweb3/common-evm-utils");

const runApp = async () => {
  await Moralis.start({
    apiKey: "YOUR_API_KEY",
    // ...and any other configuration
  });

  const address = "0x26fcbd3afebbe28d0a8684f790c48368d21665b5";

  const response = await Moralis.EvmApi.resolve.resolveAddress({
    address,
  });

  console.log(response.toJSON());
};

runApp();

index.ts (TypeScript)

import Moralis from "moralis";
import { EvmChain } from "@moralisweb3/common-evm-utils";

const runApp = async () => {
  await Moralis.start({
    apiKey: "YOUR_API_KEY",
    // ...and any other configuration
  });

  const address = "0x26fcbd3afebbe28d0a8684f790c48368d21665b5";

  const response = await Moralis.EvmApi.resolve.resolveAddress({
    address,
  });

  console.log(response.toJSON());
};

runApp();

index.py (Python)

from moralis import evm_api

api_key = "YOUR_API_KEY"

params = {
  "address": "0x26fcbd3afebbe28d0a8684f790c48368d21665b5",
}

result = evm_api.resolve.resolve_address(
    api_key=api_key,
    params=params,
)

print(result)

Step 3: Run the script

To run the script, enter the following command:

Shell (JavaScript)

node index.js

Shell (TypeScript)

ts-node index.ts

Shell (Python)

python index.py

In your terminal, you should see the following JSON response:

{
  "name": "vitalik.eth"
}

Congratulations 🥳 You just reverse resolved the ENS name from a wallet address with just a few lines of code using the Moralis Resolve API!

Youtube Video

API Reference

If you want to know more details on the endpoint and optional parameters, check out:

• resolveAddress

Support

If you face any trouble following the tutorial, feel free to reach out to our community engineers in our Discord or Forum to get 24/7 developer support.