as per Firefox - Facebook Container addon
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//src - https://github.com/mozilla/contain-facebook/blob/master/src/background.js
facebook.com
www.facebook.com
facebook.net
fb.com
fbcdn.net
fbcdn.com
fbsbx.com
tfbnw.net
facebook-web-clients.appspot.com
fbcdn-profile-a.akamaihd.net
fbsbx.com.online-metrix.net
connect.facebook.net.edgekey.net
instagram.com
cdninstagram.com
instagramstatic-a.akamaihd.net
instagramstatic-a.akamaihd.net.edgesuite.net
messenger.com
m.me
messengerdevelopers.com
atdmt.com
workplace.com
www.workplace.com
work.facebook.com
onavo.com
oculus.com
oculusvr.com
oculusbrand.com
oculusforbusiness.com
#hosts
origin - https://www.pipiscrew.com/?p=17644 facecbook-domains