Facebook DNS appears to be broken

[kriteknetworks]

I'm sure I'm not the only one to notice but Facebook dns servers are timing out when requests are sent for its AAAA records. I sent a msg to the Facebook team, hopefully they fix it as this problem adds to page load time, and I shouldn't have to disable ipv6 in my web browser :)

[piojan]

I am not seeing time outs for AAAA recors. Servers seem to respond in less then 350ms.

www.facebook.com.       497     IN      NS      glb01.sf2p.tfbnw.net.

dig www.facebook.com AAAA @glb01.sf2p.tfbnw.net

Code Select Expand

;; QUESTION SECTION:
;www.facebook.com.              IN      AAAA

;; Query time: 252 msec


[ericj]

dig facebook.com NS

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;; ANSWER SECTION:
facebook.com.           87070   IN      NS      dns04.sf2p.tfbnw.net.
facebook.com.           87070   IN      NS      dns05.sf2p.tfbnw.net.
facebook.com.           87070   IN      NS      ns1.facebook.com.
facebook.com.           87070   IN      NS      ns2.facebook.com.

Using "dig facebook.com AAAA @SERVER" those four servers all responded in under 10 milliseconds for me.

dig www.facebook.com NS

Code Select Expand


;; ANSWER SECTION:
www.facebook.com.       328     IN      NS      glb01.ams1.tfbnw.net.
www.facebook.com.       328     IN      NS      glb01.sf2p.tfbnw.net.
www.facebook.com.       328     IN      NS      glb01.ash1.tfbnw.net.

Using "dig www.facebook.com AAAA @SERVER" those three servers all responded in under 200 milliseconds.

[kriteknetworks]

Yeah, looks like its been fixed as far as lookups no longer timing out. Page loads on FB no longer wait on v6 lookups :)

[carrerasg]

It was horrible... I sent them a message also but I didn't really expect any improvement.  I'm rather surprised.