Facebook is back. After a six-hour outage yesterday, the social network is coming back to life. DNS routing problems were reportedly to blame for the problems. The blackout also hit Instagram, Oculus, Messenger and Whatsapp. The company released a statement saying, “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.” This was the longest Facebook outage since 2019, when the site was down for more than 24 hours.