Facebook is experiencing a rare outage that is making the popular social network site — along with Facebook Messenger and Instagram — unavailable to users across the United States as well as parts of Europe and South America, according to third-party site Down Detector’s outage map.

Facebook has officially acknowledged the issue on its social media platforms (ironically, Twitter is likely your most reliable source due to the outage), and the company’s support dashboard notes that it’s working on a fix.

We know some people are having trouble accessing the Facebook family of apps. We’re working to resolve the issue as soon as possible. — Facebook (@facebook) November 20, 2018

Today’s outage marks the second major downtime event for Facebook this month, following a shorter outage for about a half-hour on November 12th, which the company commented to USA Today was caused by a “routine test.”