Facebook and its affiliated services WhatsApp and Instagram were, in fact, all down. Social media quickly burst into flames, reporting what our engineers rapidly confirmed too. But as we were about to post on our public status page we realized something else more serious was going on. 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. “ Facebook can't be down, can it?”, we thought, for a second. This post is also available in 简体中文, 繁體中文, 日本語, 한국어, Deutsch, Français, Español, Português, Pусский, and Italiano.
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