[dns-operations] google DNS returns different result

[Robert Edmonds]

Interestingly, https://cachecheck.opendns.com/ shows that www.qq.com is
a CNAME to qq.com.edgesuite.net at all of OpenDNS's locations, except
for Los Angeles, which shows the same 14.17.x.x and 59.x.x.x A-records
in the original post below.

TOURNAT Guillaume wrote:
> It has been discussed several times about China "great firewall", which consists of altering DNS responses, among filtering IP connections. 
> 
> Searching google about "great firewall" you will find some links. As the note of Stephane Bortzmeyer : http://www.bortzmeyer.org/sichuan-pepper.html
> 
> 
> > Le 4 juil. 2016 à 05:51, "yhpeng at orange.fr" <yhpeng at orange.fr> a écrit :
> > 
> > Hi members,
> > 
> > I dig www.qq.com from within a server in China.
> > Most the other public DNS servers return a CNAME to akamai CDN.
> > Only google's DNS returns a group of addresses which are China's IP.
> > Do you know why? Thanks.
> > 
> > $ dig www.qq.com @8.8.8.8
> > 
> > ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6_7.7 <<>> www.qq.com @8.8.8.8
> > ;; global options: +cmd
> > ;; Got answer:
> > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 37376
> > ;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0
> > 
> > ;; QUESTION SECTION:
> > ;www.qq.com.                    IN      A
> > 
> > ;; ANSWER SECTION:
> > www.qq.com.             299     IN      A       14.17.32.211
> > www.qq.com.             299     IN      A       59.37.96.63
> > www.qq.com.             299     IN      A       14.17.42.40
> > 
> > ;; Query time: 52 msec
> > ;; SERVER: 8.8.8.8#53(8.8.8.8)
> > ;; WHEN: Mon Jul  4 10:54:29 2016
> > ;; MSG SIZE  rcvd: 76
> > 
> > 
> > level3's DNS:
> > 
> > $ dig www.qq.com @209.244.0.3
> > 
> > ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6_7.7 <<>> www.qq.com @209.244.0.3
> > ;; global options: +cmd
> > ;; Got answer:
> > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 8533
> > ;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 0
> > 
> > ;; QUESTION SECTION:
> > ;www.qq.com.                    IN      A
> > 
> > ;; ANSWER SECTION:
> > www.qq.com.             277     IN      CNAME   qq.com.edgesuite.net.
> > qq.com.edgesuite.net.   1590    IN      CNAME   a1574.b.akamai.net.
> > a1574.b.akamai.net.     14      IN      A       173.205.77.26
> > a1574.b.akamai.net.     14      IN      A       173.205.76.243
> > 
> > ;; Query time: 166 msec
> > ;; SERVER: 209.244.0.3#53(209.244.0.3)
> > ;; WHEN: Mon Jul  4 10:59:26 2016
> > ;; MSG SIZE  rcvd: 123
> > 
> > 
> > Comodo's DNS:
> > 
> > $ dig www.qq.com @8.26.56.26
> > 
> > ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.37.rc1.el6_7.7 <<>> www.qq.com @8.26.56.26
> > ;; global options: +cmd
> > ;; Got answer:
> > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 31750
> > ;; flags: qr rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 0
> > 
> > ;; QUESTION SECTION:
> > ;www.qq.com.                    IN      A
> > 
> > ;; ANSWER SECTION:
> > www.qq.com.             108     IN      CNAME   qq.com.edgesuite.net.
> > qq.com.edgesuite.net.   1534    IN      CNAME   a1574.b.akamai.net.
> > a1574.b.akamai.net.     3       IN      A       2.21.75.67
> > a1574.b.akamai.net.     3       IN      A       2.21.75.66
> > 
> > ;; Query time: 279 msec
> > ;; SERVER: 8.26.56.26#53(8.26.56.26)
> > ;; WHEN: Mon Jul  4 11:01:53 2016
> > ;; MSG SIZE  rcvd: 123
> > 
> > 
> > regards.
> > _______________________________________________
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> 
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-- 
Robert Edmonds