watchNS/ayu-net.com/進化/iij4uについて、ここに記述してください。

$ dig -t a ayu-net.com @210.130.0.1
{{{
; <<>> DiG 9.9.5-3ubuntu0.13-Ubuntu <<>> -t a ayu-net.com @210.130.0.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 33364
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;ayu-net.com.			IN	A

;; Query time: 95 msec
;; SERVER: 210.130.0.1#53(210.130.0.1)
;; WHEN: Tue Feb 21 11:15:24 JST 2017
;; MSG SIZE  rcvd: 40
}}}

$ dnsname 210.130.0.1
ns01.iij4u.or.jp