StackOverflow, Twitch, Reddit, others down in Fastly CDN outage

Major websites around the world are either completely down or not loading properly in a global outage.

As noticed by BleepingComputer, sites currently impacted by this outage include:

Amazon Amazon Web Services (AWS) Debian.org repos (https://deb.debian.org/) GOV.UK GitHub Heroku (https://dashboard.heroku.com/) PyPI.org Reddit RubyGems.org Shopify StackOverflow TechRadar The Verge TomsGuide

This is not an exhaustive list as many reports are surfacing on the internet with users struggling to access prominent websites.

Accessing any of the websites impacted by this breach throws a "connection failure," "IO error", or an HTTP 503 error, as seen by BleepingComputer:

As seen by BleepingComputer, in cases of Amazon and GitHub, the images, JavaScript files, CSS styling sheets, all likely hosted on a CDN, are not loading properly:

Fastly CDN likely to blame

While an investigation is ongoing as to what the reason behind the outage might be, Fastly CDN has been seen as the common link.

Many of the impacted websites on the list rely on Fastly CDN to serve content, as seen by BleepingComputer.

As of today, Jun 8, 09:58 UTC time, Fastly's status page confirmed an ongoing issue that is being investigated.

"We're currently investigating potential impact to performance with our CDN services," reads Fastly's status page. 
 

This is a developing story.

Updates:

06:44 AM ET: "The issue has been identified and a fix is being implemented," according to Fastly.

06:57 AM ET: The issue has been identified and a fix has been applied. Customers may experience increased origin load as global services return.

h/t Michael Kearns, Mayank Parmar