Facebook, Instagram, WhatsApp Go Down as DNS Records Disappear under Mysterious Circumstances | Wolf Street

“Internet traffic to Facebook services virtually disappeared at 15:39 UTC on Monday, October 4, 2021 with initial indications pointing to a DNS problem,” reported Kentik, a network monitoring company, citing aggregate NetFlow data. For users, going to the websites of Facebook, Instagram, and WhatsApp has now been impossible for hours.

“Earlier this morning, something inside Facebook caused the company to revoke key digital records that tell computers and other Internet-enabled devices how to find these destinations online,” reported internet security focused investigative journalist, Brian Krebs, on his site, Krebs on Security.

These digital records are the records in the Domain Name System (DNS), a decentralized naming system for computers and services connected to the Internet or a private network. These name records allow browsers to find the websites the user wants to see. Without DNS records, there is nothing.

Facebook, Instagram, WhatsApp Go Down as DNS Records Disappear under Mysterious Circumstances | Wolf Street