All Facebook services are currently down including the Oculus app, Oculus Store, and Oculus website.
We’re aware that some people are having trouble accessing our apps and products. We’re working to get things back to normal as quickly as possible, and we apologize for any inconvenience.
— Oculus (@oculus) October 4, 2021
The issue appears to be related to DNS (Domain Name System), the global semi-decentralized system which maps human readable domain names (such as oculus.com) to the associated IP address of the server they belong to.
Any attempt to reach the facebook.com or oculus.com domain names currently returns NXDOMAIN, the error for a domain that does not exist. That suggests either Facebook’s own DNS servers experienced a critical failure, or some kind of rare DNS exploit from malicious actors is taking place.
This news is breaking, we will update this article as it develops.
via Mint VR