2021 Facebook outage

On October 4, 2021, American social network Facebook and its subsidiaries Messenger, Instagram, WhatsApp, Mapillary, and Oculus became globally unavailable.[1] The outage started close to 12:00 pm Eastern Time and lasted around six hours.[2] The reason is known as the loss of IP routes to the Facebook Domain Name System (DNS) servers.[3][4]

This is believed to have been caused by a problem with Facebook's Border Gateway Protocol.[5][2] The outage also reportedly broke internal systems used by Facebook employees.[2]

References

  1. ↑ "Facebook's historic outage, explained". Kentik Blog. Archived from the original on 2021-11-01. Retrieved 2021-11-23.
  2. ↑ 2.0 2.1 2.2 Lawler, Richard (October 4, 2021). "Facebook is down, along with Instagram, WhatsApp, Messenger, and Oculus VR". The Verge. Archived from the original on October 4, 2021. Retrieved October 4, 2021.
  3. ↑ Isaac, Mike; Frenkel, Sheera (October 4, 2021). "Facebook and all of its apps go down simultaneously". The New York Times. Archived from the original on October 4, 2021. Retrieved October 4, 2021.
  4. ↑ "Facebook suffers global outage". Kentik. Archived from the original on 2021-10-04. Retrieved 2021-11-23.
  5. ↑ Duffy, Clare; Lyngaas, Sean (October 4, 2021). "Facebook, Instagram, WhatsApp go down". CNN Business. Archived from the original on October 4, 2021. Retrieved October 4, 2021.