AAAA's for www.netflix.com

Wed Jun 6 14:05:04 UTC 2012

I started monitoring IPv6 access to www.netflix.com after seeing this
posting
(http://www.personal.psu.edu/dvm105/blogs/ipv6/2012/06/netflix-is-back.html)
and what I found, over the week, was that access was coming and going
(www.premieronline.net/~fbulk/netflix.png).  But not because of IPv6
connectivity, but because the AAAA's were coming and going.  Netflix's DNS
TTL is pretty short.  

I assume Netflix has some global DNS load balancing so my perspective may
not be complete.  Has anyone else been seeing this?

I contacted a Netflix employee (he's well known on this list) and he
responded once but I haven't heard back since Saturday.  

Here's some sample queries from Saturday and today.
=========================================================
nagios:/home/fbulk# dig AAAA www.netflix.com

; <<>> DiG 9.7.3 <<>> AAAA www.netflix.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 26825
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

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

;; AUTHORITY SECTION:
netflix.com.            150     IN      SOA     dns.netflix.com.
nicadmin.netflix.com. 2012060104 900 600 1209600 1800

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Sat Jun  2 09:29:17 2012
;; MSG SIZE  rcvd: 82

nagios:/home/fbulk#
=========================================================

=========================================================
nagios:/home/fbulk# dig AAAA www.netflix.com

; <<>> DiG 9.7.3 <<>> AAAA www.netflix.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 33117
;; flags: qr rd ra; QUERY: 1, ANSWER: 9, AUTHORITY: 8, ADDITIONAL: 0

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

;; ANSWER SECTION:
www.netflix.com.        132     IN      CNAME
dualstack.wwwservice--frontend-313423742.us-east-1.elb.amazonaws.com.
dualstack.wwwservice--frontend-313423742.us-east-1.elb.amazonaws.com. 12 IN
AAAA 2406:da00:ff00::3210:e195
dualstack.wwwservice--frontend-313423742.us-east-1.elb.amazonaws.com. 12 IN
AAAA 2406:da00:ff00::3213:5282
dualstack.wwwservice--frontend-313423742.us-east-1.elb.amazonaws.com. 12 IN
AAAA 2406:da00:ff00::3213:6340
dualstack.wwwservice--frontend-313423742.us-east-1.elb.amazonaws.com. 12 IN
AAAA 2406:da00:ff00::3213:779a
dualstack.wwwservice--frontend-313423742.us-east-1.elb.amazonaws.com. 12 IN
AAAA 2406:da00:ff00::1715:75cd
dualstack.wwwservice--frontend-313423742.us-east-1.elb.amazonaws.com. 12 IN
AAAA 2406:da00:ff00::1715:eceb
dualstack.wwwservice--frontend-313423742.us-east-1.elb.amazonaws.com. 12 IN
AAAA 2406:da00:ff00::1717:e388
dualstack.wwwservice--frontend-313423742.us-east-1.elb.amazonaws.com. 12 IN
AAAA 2406:da00:ff00::1717:eb58

;; AUTHORITY SECTION:
elb.amazonaws.com.      7092    IN      NS      ns-916.amazonaws.com.
elb.amazonaws.com.      7092    IN      NS      ns-941.amazonaws.com.
elb.amazonaws.com.      7092    IN      NS      ns-927.amazonaws.com.
elb.amazonaws.com.      7092    IN      NS      ns-925.amazonaws.com.
elb.amazonaws.com.      7092    IN      NS      ns-934.amazonaws.com.
elb.amazonaws.com.      7092    IN      NS      ns-935.amazonaws.com.
elb.amazonaws.com.      7092    IN      NS      ns-944.amazonaws.com.
elb.amazonaws.com.      7092    IN      NS      ns-947.amazonaws.com.

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Sat Jun  2 09:34:35 2012
;; MSG SIZE  rcvd: 504

nagios:/home/fbulk#
=========================================================

=========================================================
nagios:/home/fbulk# dig AAAA www.netflix.com

; <<>> DiG 9.7.3 <<>> AAAA www.netflix.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34529
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

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

;; AUTHORITY SECTION:
netflix.com.            94      IN      SOA     dns.netflix.com.
nicadmin.netflix.com. 2012060107 900 600 1209600 1800

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Jun  6 09:00:44 2012
;; MSG SIZE  rcvd: 82

nagios:/home/fbulk#
=========================================================

Frank Bulk