Update: Facebook, WhatsApp, and Instagram are now back online for some users.
DNS, Short for Domain Name System, is the internet’s address book. It translates Domain names such as facebook.com into numerical Internet Protocol (IP) addresses that computers understand such as 102.132.100.35. DNS is a critical piece of how the internet or websites work. Currently, Facebook’s DNS system seems to be broken. Since Facebook’s other properties such as Instagram and WhatsApp share the same computing infrastructure, they’ve also been equally affected. Even Oculus, Facebook’s virtual reality platform, and Workplace, its business communication tool, are down.
A Reddit user who claims to be on the recovery team of the issue confirmed that the problem is indeed related to DNS for Facebook services. The comment and the account, however, have since been deleted. Here’s what he wrote;
Facebook is now hours into the outage and there’s no clear timeline when the issue is going to be resolved.
The SVP of Cloudflare tweeted that Facebook’s BGP routes have been withdrawn from the internet. While DNS is the Internet’s Phone Book, Border Gateway Protocol (BGP) is the postal service of the Internet. BGP is a system that’s responsible for looking at all of the available paths that data could travel and picking the best route. With Facebook BGP routes missing on the internet, providers don’t know how to route Facebook traffic. Cloudflare has a great write-up on BGP and how it caused the outage.
Update: Looks like things are starting to get back online. According to the latest tweet from Cloudflare CTO, they are beginning to see some BGP traffic from Facebook again after the outage. WhatsApp and Instagram are back for some users. Facebook is partially back online too.
Read More: WhatsApp Call Not Working: Here are 5 Ways To Fix It
Meanwhile, a number of domain registration companies listed the domain Facebook.com as up for sale!
Due to the nature of DNS, it’ll take at least 24 hours for full recovery from the time the issue is resolved. This is due to the decentralized nature of the DNS systems. Typically, when a record is changed, it takes about 24 hours for the copy of the change to be reflected across all the DNS servers on the internet. This is called “DNS Propagation” time.
So even when services are restored, not everyone will come back online at the same time after this Facebook outage. This is a developing story. We shall keep updating you as the issue gets resolved.
