watchNS/cloud.i.u-tokyo.ac.jpについて、ここに記述してください。

%dig -t ns cloud.i.u-tokyo.ac.jp @133.11.0.1

; <<>> DiG 9.9.0 <<>> -t ns cloud.i.u-tokyo.ac.jp @133.11.0.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34243
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 2
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;cloud.i.u-tokyo.ac.jp.         IN      NS

;; AUTHORITY SECTION:
cloud.i.u-tokyo.ac.jp.  86400   IN      NS      ad01.cloud.i.u-tokyo.ac.jp.

;; ADDITIONAL SECTION:
ad01.cloud.i.u-tokyo.ac.jp. 86400 IN    A       133.11.23.83

;; Query time: 7 msec
;; SERVER: 133.11.0.1#53(133.11.0.1)
;; WHEN: Wed May 13 19:27:46 2015
;; MSG SIZE  rcvd: 85

%dig -t any cloud.i.u-tokyo.ac.jp @133.11.23.83

; <<>> DiG 9.9.0 <<>> -t any cloud.i.u-tokyo.ac.jp @133.11.23.83
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16480
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 5, AUTHORITY: 0, ADDITIONAL: 3

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4000
;; QUESTION SECTION:
;cloud.i.u-tokyo.ac.jp.         IN      ANY

;; ANSWER SECTION:
cloud.i.u-tokyo.ac.jp.  600     IN      A       133.11.23.83
cloud.i.u-tokyo.ac.jp.  3600    IN      NS      i-ns.i.u-tokyo.ac.jp.
cloud.i.u-tokyo.ac.jp.  3600    IN      NS      ad01.cloud.i.u-tokyo.ac.jp.
cloud.i.u-tokyo.ac.jp.  3600    IN      SOA     ad01.cloud.i.u-tokyo.ac.jp. hostmaster.cloud.i.u-tokyo.ac.jp. 3080 900 600 86400 3600
cloud.i.u-tokyo.ac.jp.  600     IN      AAAA    2002:850b:1753::850b:1753

;; ADDITIONAL SECTION:
i-ns.i.u-tokyo.ac.jp.   41879   IN      A       133.11.232.71
ad01.cloud.i.u-tokyo.ac.jp. 3600 IN     A       133.11.23.83

;; Query time: 8 msec
;; SERVER: 133.11.23.83#53(133.11.23.83)
;; WHEN: Wed May 13 18:55:18 2015
;; MSG SIZE  rcvd: 211