whois-light/examples/bulkLookup.js

Lightweight and performant WHOIS client supporting hundreds of TLDs

const WhoisLight = require("../index.js");

// The domains we want to query, and options for the whois server
const domains = [
  "google.com",
  "example.com",
  "gmail.com",
  "facebook.com",
  "eithan.net",
  "eithan.me",
  "youtube.com",
  "wikipedia.org",
];

// Additional options to the query
const options = {
  // Whether or not we return a parsed key/value of the whois results
  format: true,

  // Set timeout to 10 seconds
  timeout: 10000,

  // Set the whois port, default is 43
  port: 43,

  // The amount of concurrent queries this can execute at a time. if our bulk
  // lookup, queries less than this number, this number will automaically be
  // set to the amount of domaines we are looking up.
  parellel: 100,
};

(async () => {
  try {
    // Starting a simple benchmark
    const startTime = Date.now();

    // Fetching our bulk information from server
    const whoisResults = await WhoisLight.bulkLookup(options, domains);

    // Calculating and logging benchmark
    const endTime = Date.now();
    console.log(`Query successfully completed in ${endTime - startTime}ms`);

    // Printing results
    for (const domainLookup in whoisResults) {
      if (whoisResults[domainLookup]) {
        // To access any of the whois information on a particular domain, use
        // whoisResults[domainLookup]
        console.log(
          `Successfully queried information for ${domainLookup} who is registered with ${whoisResults[domainLookup]["Registrar"]}`
        );
      }
    }
  } catch {
    console.log("Failed to query whois information");
    console.log("Ensure a network connection is established.");
  }
})();