Facebook is down

As of about 15 minutes ago, Facebook and its associated companies, Instagram, Whatsapp, etc are current offline, mainly due to a DNS resolution issue. This may be a deliberate change to protect the servers, or it could be a failure of the DNS resolvers. No one really knows at this point. 

 

We can verify this by doing DNS resolution checks from the command line, and we get

 

; <<>> DiG 9.10.6 <<>> -t A www.facebook.com @8.8.8.8 +all

;; global options: +cmd

;; Got answer:

;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 436

;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

 

;; OPT PSEUDOSECTION:

; EDNS: version: 0, flags:; udp: 512

;; QUESTION SECTION:

;www.facebook.com. IN A

 

;; Query time: 23 msec

;; SERVER: 8.8.8.8#53(8.8.8.8)

;; WHEN: Mon Oct 04 18:03:09 BST 2021

;; MSG SIZE  rcvd: 45

 

The quick response means that Google (8.8.8.8) has already cached the failure and is returning nothing for www.facebook.com. There's like to be a short delay once its back up before resolvers expire this and retry, depending on the zone configuration.