blog.cloudflare.com

Understanding How Facebook Disappeared from the Internet

“Facebook can't be down, can it?”, we thought, for a second. Today at 15:51 UTC, we opened an internal incident entitled "Facebook DNS lookup returning SERVFAIL" because we were worried that something was wrong with our DNS resolver 1.1.1.1. But as we were about to post on our public status page we realized something else more serious was going on. Social media quickly burst into flames, reporti