var headers = {
  'Accept': "/*",
  'Referer': 'https://www.whoisxmlapi.com/?domainName=cloudfront.net&outputFormat=json',
  'User-Agent': 'Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.116 Safari/537.36',
  'X-Requested-With': 'XMLHttpRequest'
};
var options = {
  'method': 'get',
  'headers': headers,
};
var url = "https://www.whoisxmlapi.com/whoisserver/WhoisService?domainName=com.br&outputFormat=json&username=user&password=pass";
var response = JSON.parse(UrlFetchApp.fetch(url));

var express = require("express");
var app = express();
var headers = {
  'Accept': "/*",
  'Referer': 'https://www.whoisxmlapi.com/?domainName=cloudfront.net&outputFormat=json',
  'User-Agent': 'Mozilla/5.0 (Windows NT 6.3; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/53.0.2785.116 Safari/537.36',
  'X-Requested-With': 'XMLHttpRequest'
};
var options = {
  'method': 'get',
  'headers': headers,
};
var url = "https://www.whoisxmlapi.com/whoisserver/WhoisService?domainName=com.br&outputFormat=json&username=user&password=pass";

try {
  var response = app.get(url, function(req, res){
    req.set(headers);
    });
    response = JSON.parse(response);
    console.log(response);
}
catch(err) {
    console.log("Error: ", err);
}