facebook server name resolve problem?

marxwang

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Dec 29, 2009, 2:06:32 AM12/29/09

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I am both facebook and google public dns user. (at Taiwan)
After I use google public dns services, most my links (pics and rest)
to facebook are fail.

With test img url from photos-f.ak.fbcdn.net will be resolved as
60.254.131.78 by G DNS.
but type http://60.254.131.78 in browser timeout (or very slow) and
nslookup 60.254.131.78 timeout too.

With another webdns lookup (photos-f.ak.fbcdn.net) will get
80.154.117.25. and with this ip get much faster response.

Should that be google dns resolve the wrong ip? or the google dns
server return ip actually route slower for people actually in
different Area ( like Asia).

Alex Smith

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Dec 29, 2009, 8:36:21 AM12/29/09

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It's likely the fact that they are using Akamai - and hence geolocation based on where the DNS request comes from.

It's been covered a fair bit already on here, but because Googles servers are elsewhere they won't get the same sort of "close" result that you would from your ISP (I get sent to Munich, Germany for example when I should be going to London, UK).

That 60.254.131.78 IP is in Japan by the way.

- Alex

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James O'Donnell

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Dec 31, 2009, 11:36:50 PM12/31/09

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Same problem in Taipei.

workhorse:~ james$ dig @8.8.8.8 profile.ak.fbcdn.net

; <<>> DiG 9.6.0-APPLE-P2 <<>> @8.8.8.8 profile.ak.fbcdn.net
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 39471
;; flags: qr rd ra; QUERY: 1, ANSWER: 11, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;profile.ak.fbcdn.net. IN A

;; Query time: 17 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Fri Jan 1 12:25:43 2010
;; MSG SIZE rcvd: 259

workhorse:~ james$ dig @168.95.1.1 profile.ak.fbcdn.net

; <<>> DiG 9.6.0-APPLE-P2 <<>> @168.95.1.1 profile.ak.fbcdn.net
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6343
;; flags: qr rd ra; QUERY: 1, ANSWER: 11, AUTHORITY: 9, ADDITIONAL: 5

;; QUESTION SECTION:
;profile.ak.fbcdn.net. IN A

;; AUTHORITY SECTION:
l.akamai.net. 752 IN NS n0l.akamai.net.
l.akamai.net. 752 IN NS n4l.akamai.net.
l.akamai.net. 752 IN NS n2l.akamai.net.
l.akamai.net. 752 IN NS n5l.akamai.net.
l.akamai.net. 752 IN NS n6l.akamai.net.
l.akamai.net. 752 IN NS n7l.akamai.net.
l.akamai.net. 752 IN NS n1l.akamai.net.
l.akamai.net. 752 IN NS n8l.akamai.net.
l.akamai.net. 752 IN NS n3l.akamai.net.

;; ADDITIONAL SECTION:
n0l.akamai.net. 1032 IN A 60.254.173.7
n1l.akamai.net. 2074 IN A 202.175.5.94
n2l.akamai.net. 2101 IN A 60.254.173.7
n3l.akamai.net. 1766 IN A 203.69.113.37
n4l.akamai.net. 667 IN A 203.69.113.36

;; Query time: 21 msec
;; SERVER: 168.95.1.1#53(168.95.1.1)
;; WHEN: Fri Jan 1 12:26:22 2010
;; MSG SIZE rcvd: 501

On Dec 29 2009, 3:06 pm, marxwang <marx.w...@gmail.com> wrote:
> I am bothfacebookand google public dns user. (at Taiwan)

> After I use google public dns services, most my links (pics and rest)

> tofacebookare fail.

>
> With test img url from photos-f.ak.fbcdn.net will be resolved as
> 60.254.131.78 by G DNS.

> but typehttp://60.254.131.78in browser timeout (or very slow) and

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