Get ENS expiry for a given address

ensExpiry.js

const { ethers, BigNumber } = require("ethers");

const provider = new ethers.providers.AlchemyProvider('homestead', '_gNU-Y2xjUgiSuMx2tr87F-wZ12ybjrh');

async function getExpiryDate(address) { 
  const ens = await provider.lookupAddress(address);
  
  if (ens === null) {
    console.log('No ENS found for this address');
    return;
  }
  
  const ensDomainSubstring = ens.substring(0, ens.indexOf('.eth'));
  const ensContractAddress = "0x57f1887a8BF19b14fC0dF6Fd9B2acc9Af147eA85"

  const ensAbi = [
   "function nameExpires(uint256 id) external view returns(uint)"
  ]

  const ensContract = new ethers.Contract(ensContractAddress, ensAbi, provider);
  const keccakAddress = ethers.utils.keccak256(ethers.utils.toUtf8Bytes(ensDomainSubstring));

  const result = await ensContract.nameExpires(keccakAddress);
    
  const timestamp = BigNumber.from(result).toNumber();
  var date = new Date(timestamp*1000); // https://stackoverflow.com/questions/24170933/convert-unix-timestamp-to-date-time-javascript
  
  console.log('Expiry: ', date); 
}

getExpiryDate('0xa892631eacaf19db0b229d08b3a02e5e53ff37c1');