[dns-operations] imdb.com (i.media-imdb.com (iwi.media-imdb.com))

Bob Paolucci Bob.Paolucci at rci.rogers.com
Mon Mar 7 20:46:38 UTC 2011


Hey Guys,

First let me apologize for any sig that's attached to this email...

Second, any other carriers having issues with content from imdb.com?

Symptoms for our customers, they get an incomplete load of the webpage,
formatting is all wrong.

Looks like it may have something to do with DNS resolution for :

i.media-imdb.com (iwi.media-imdb.com)

Could this come down to the CNAME being at the zone apex
Could have something to do with the resolver we're using not liking
that.


Here's what we see:

bash-2.05$ dig i.media-imdb.com @dns7.wlfdle                

; <<>> DiG 9.2.2 <<>> i.media-imdb.com @dns7.wlfdle
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 34504
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;i.media-imdb.com.              IN      A

;; Query time: 118 msec
;; SERVER: 192.168.11.147#53(dns7.wlfdle)
;; WHEN: Mon Mar  7 20:42:54 2011
;; MSG SIZE  rcvd: 34


bash-2.05$ dig i.media-imdb.com @dns7.wlfdle +trace

; <<>> DiG 9.2.2 <<>> i.media-imdb.com @dns7.wlfdle +trace
;; global options:  printcmd
.                       506608  IN      NS      f.root-servers.net.
.                       506608  IN      NS      j.root-servers.net.
.                       506608  IN      NS      b.root-servers.net.
.                       506608  IN      NS      a.root-servers.net.
.                       506608  IN      NS      d.root-servers.net.
.                       506608  IN      NS      i.root-servers.net.
.                       506608  IN      NS      h.root-servers.net.
.                       506608  IN      NS      g.root-servers.net.
.                       506608  IN      NS      m.root-servers.net.
.                       506608  IN      NS      e.root-servers.net.
.                       506608  IN      NS      c.root-servers.net.
.                       506608  IN      NS      l.root-servers.net.
.                       506608  IN      NS      k.root-servers.net.
;; Received 492 bytes from 192.168.11.147#53(dns7.wlfdle) in 2 ms

com.                    172800  IN      NS      m.gtld-servers.net.
com.                    172800  IN      NS      f.gtld-servers.net.
com.                    172800  IN      NS      d.gtld-servers.net.
com.                    172800  IN      NS      g.gtld-servers.net.
com.                    172800  IN      NS      j.gtld-servers.net.
com.                    172800  IN      NS      l.gtld-servers.net.
com.                    172800  IN      NS      k.gtld-servers.net.
com.                    172800  IN      NS      h.gtld-servers.net.
com.                    172800  IN      NS      i.gtld-servers.net.
com.                    172800  IN      NS      e.gtld-servers.net.
com.                    172800  IN      NS      a.gtld-servers.net.
com.                    172800  IN      NS      c.gtld-servers.net.
com.                    172800  IN      NS      b.gtld-servers.net.
;; Received 494 bytes from 192.5.5.241#53(f.root-servers.net) in 6 ms

media-imdb.com.         172800  IN      NS      pdns3.ultradns.org.
media-imdb.com.         172800  IN      NS      pdns4.ultradns.org.
media-imdb.com.         172800  IN      NS      pdns1.ultradns.net.
media-imdb.com.         172800  IN      NS      pdns2.ultradns.net.
media-imdb.com.         172800  IN      NS      pdns5.ultradns.info.
media-imdb.com.         172800  IN      NS      pdns6.ultradns.co.uk.
;; Received 237 bytes from 192.55.83.30#53(m.gtld-servers.net) in 51 ms

i.media-imdb.com.       180     IN      CNAME   iwi.media-imdb.com.
iwi.media-imdb.com.     7200    IN      NS      ns-921.amazon.com.
iwi.media-imdb.com.     7200    IN      NS      ns-911.amazon.com.
iwi.media-imdb.com.     7200    IN      NS      ns-923.amazon.com.
iwi.media-imdb.com.     7200    IN      NS      ns-931.amazon.com.
iwi.media-imdb.com.     7200    IN      NS      ns-932.amazon.com.
iwi.media-imdb.com.     7200    IN      NS      ns-912.amazon.com.
;; Received 189 bytes from 199.7.68.1#53(pdns3.ultradns.org) in 25 ms

bash-2.05$



bash-2.05$ dig iwi.media-imdb.com. @dns7.wlfdle       

; <<>> DiG 9.2.2 <<>> iwi.media-imdb.com. @dns7.wlfdle
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 54118
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;iwi.media-imdb.com.            IN      A

;; Query time: 1438 msec
;; SERVER: 192.168.11.147#53(dns7.wlfdle)
;; WHEN: Mon Mar  7 20:43:53 2011
;; MSG SIZE  rcvd: 36

bash-2.05$ dig iwi.media-imdb.com. @dns7.wlfdle +trace

; <<>> DiG 9.2.2 <<>> iwi.media-imdb.com. @dns7.wlfdle +trace
;; global options:  printcmd
.                       506572  IN      NS      f.root-servers.net.
.                       506572  IN      NS      j.root-servers.net.
.                       506572  IN      NS      b.root-servers.net.
.                       506572  IN      NS      a.root-servers.net.
.                       506572  IN      NS      d.root-servers.net.
.                       506572  IN      NS      i.root-servers.net.
.                       506572  IN      NS      h.root-servers.net.
.                       506572  IN      NS      g.root-servers.net.
.                       506572  IN      NS      m.root-servers.net.
.                       506572  IN      NS      e.root-servers.net.
.                       506572  IN      NS      c.root-servers.net.
.                       506572  IN      NS      l.root-servers.net.
.                       506572  IN      NS      k.root-servers.net.
;; Received 492 bytes from 192.168.11.147#53(dns7.wlfdle) in 2 ms

com.                    172800  IN      NS      h.gtld-servers.net.
com.                    172800  IN      NS      i.gtld-servers.net.
com.                    172800  IN      NS      j.gtld-servers.net.
com.                    172800  IN      NS      l.gtld-servers.net.
com.                    172800  IN      NS      d.gtld-servers.net.
com.                    172800  IN      NS      e.gtld-servers.net.
com.                    172800  IN      NS      g.gtld-servers.net.
com.                    172800  IN      NS      m.gtld-servers.net.
com.                    172800  IN      NS      a.gtld-servers.net.
com.                    172800  IN      NS      k.gtld-servers.net.
com.                    172800  IN      NS      c.gtld-servers.net.
com.                    172800  IN      NS      f.gtld-servers.net.
com.                    172800  IN      NS      b.gtld-servers.net.
;; Received 496 bytes from 192.5.5.241#53(f.root-servers.net) in 5 ms

media-imdb.com.         172800  IN      NS      pdns3.ultradns.org.
media-imdb.com.         172800  IN      NS      pdns4.ultradns.org.
media-imdb.com.         172800  IN      NS      pdns1.ultradns.net.
media-imdb.com.         172800  IN      NS      pdns2.ultradns.net.
media-imdb.com.         172800  IN      NS      pdns5.ultradns.info.
media-imdb.com.         172800  IN      NS      pdns6.ultradns.co.uk.
;; Received 239 bytes from 192.54.112.30#53(h.gtld-servers.net) in 118
ms

iwi.media-imdb.com.     7200    IN      NS      ns-921.amazon.com.
iwi.media-imdb.com.     7200    IN      NS      ns-911.amazon.com.
iwi.media-imdb.com.     7200    IN      NS      ns-923.amazon.com.
iwi.media-imdb.com.     7200    IN      NS      ns-931.amazon.com.
iwi.media-imdb.com.     7200    IN      NS      ns-932.amazon.com.
iwi.media-imdb.com.     7200    IN      NS      ns-912.amazon.com.
;; Received 169 bytes from 199.7.68.1#53(pdns3.ultradns.org) in 23 ms

iwi.media-imdb.com.     60      IN      CNAME   iai.media-imdb.com.
;; Received 54 bytes from 72.21.192.209#53(ns-921.amazon.com) in 17 ms
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