DNS/毒盛/キャッシュ上書き/NS変更毒/デモ/返事1について、ここに記述してください。 

$ dig +norec -t ns flip.e-ontap.com @ns.e-ontap.com

; <<>> DiG 9.12.3 <<>> +norec -t ns flip.e-ontap.com @ns.e-ontap.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 6772
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 1

;; QUESTION SECTION:
;flip.e-ontap.com.              IN      NS

;; AUTHORITY SECTION:
flip.e-ontap.com.       86400   IN      NS      ns1.flip.e-ontap.com.

;; ADDITIONAL SECTION:
ns1.flip.e-ontap.com.   86400   IN      A       150.42.6.1

;; Query time: 11 msec
;; SERVER: 14.192.44.1#53(14.192.44.1)
;; WHEN: 水 12月 26 08:40:22 JST 2018
;; MSG SIZE  rcvd: 68