> No two devices on the internet are directly connected.
I get the need for brevity and simplicity in a post like this, but is there really a need for obviously false statements?
This page makes Brave think it's unavailable and offer an archived version, lol.
This was likely an inside job. This outage prevented employees from entering their office buildings.
Facebook in this case, operates a set of intermediary DNS servers that are responsible for everything between your ISP's recursers and the roots. These are responsible for facebook.com, instagram.com, whatsapp.com and everything else they operate.
This is not the case for instagram.com, which is hosted on a different provider (AWS Route53) and was resolvable during the whole outage.
I'm not sure why Instagram's fronted servers returned 503, though. Maybe their backend fleet was included in the withdrawn prefixes, or maybe it was referenced through the affected domains.