Besides using c9.io or Glitch, you can also use scraping API's to get the HTML from a site, just like using Request. This way you can keep getting the html, even if your own ip has been blocked.

Check out Scraper API here: http://scraperapi.com?via=nodejswebscraping

The link is a referral link with a special discount for my students! The first 1000 API calls are free!

You can use the Postman app to execute the scraping request, or just use request inside Nodejs. Check out their great documentation for examples!