nanog mailing list archives

Re: OT: www.Amazon.com down?


From: Edward Lewis <Ed.Lewis () neustar biz>
Date: Sat, 7 Jun 2008 10:58:37 -0400

At 23:00 -0400 6/6/08, Andrew D Kirch wrote:
Paul Ferguson wrote:

 Are you looking in the right place? :-)

 %dig www.imdb.com

 ; <<>> DiG 9.3.2 <<>> www.imdb.com
 ;; global options:  printcmd
 ;; Got answer:
 ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 924
 ;; flags: qr rd ra; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 0

 ;; QUESTION SECTION:
 ;www.imdb.com.                  IN      A

 ;; ANSWER SECTION:
 www.imdb.com.           4400    IN      CNAME   us.imdb.com.
 us.imdb.com.            4       IN      CNAME   us.dd.imdb.com.
 us.dd.imdb.com.         16      IN      A       72.21.206.70
...
Odd, I'm seeing it now.  Couldn't see it for 20-30 minutes.

Andrew

I saw this problem late last night too. The problem was "downstream" in the CNAME chain. I was able to access IMDB by using us.dd.imdb.com (http://us.dd.imdb.com) while the www.imdb.com address was (in some sense of the word) "broken." My local recursor got a SERVFAIL for www.imdb.com and inserted a redirection page for it. Using dig +trace at the time I could work my way around the issue. I bet the recursor got most of the way there but couldn't get the A record or something.

As it was very late for me, I didn't try to "debug" it. Just had a burning question about I movie I had just seen. ;)
--
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Edward Lewis                                                +1-571-434-5468
NeuStar

Never confuse activity with progress.  Activity pays more.


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