1. watchA

2. whois

$ dig -t ns lit.jp @ns2.dns.ne.jp

; <<>> DiG 9.11.3-1ubuntu1.16-Ubuntu <<>> -t ns lit.jp @ns2.dns.ne.jp
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 949
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;lit.jp.                                IN      NS

;; Query time: 20 msec
;; SERVER: 133.167.21.1#53(133.167.21.1)
;; WHEN: Tue Feb 15 10:42:16 JST 2022
;; MSG SIZE  rcvd: 35

3. ns1

バックエンドもOK

$ dig -t ns lit.jp @ns1.dns.ne.jp

; <<>> DiG 9.11.3-1ubuntu1.16-Ubuntu <<>> -t ns lit.jp @ns1.dns.ne.jp
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 36442
;; flags: qr aa rd; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 3
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; NSID: 66 38 62 30 36 35 39 66 2d 35 39 31 39 2d 34 35 66 36 2d 62 62 62 33 2d 65 65 30 66 34 64 37 39 64 32 32 36 ("f8b0659f-5919-45f6-bbb3-ee0f4d79d226")
;; QUESTION SECTION:
;lit.jp.                                IN      NS

;; ANSWER SECTION:
lit.jp.                 86400   IN      NS      ns2.dns.ne.jp.
lit.jp.                 86400   IN      NS      tomcat.lit.jp.
lit.jp.                 86400   IN      NS      annex751.lit.jp.
lit.jp.                 86400   IN      NS      ns1.dns.ne.jp.

;; ADDITIONAL SECTION:
tomcat.lit.jp.          86400   IN      A       210.171.174.66
annex751.lit.jp.        86400   IN      A       153.121.65.189

;; Query time: 18 msec
;; SERVER: 61.211.236.1#53(61.211.236.1)
;; WHEN: Tue Feb 15 10:43:42 JST 2022
;; MSG SIZE  rcvd: 194

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