watchA/jp.sharp/corporateについて、ここに記述してください。

1. sharp NS 返答

$ dig corporate.jp.sharp @a.gmoregistry.net

; <<>> DiG 9.16.1-Ubuntu <<>> corporate.jp.sharp @a.gmoregistry.net
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 32670
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;corporate.jp.sharp.            IN      A

;; AUTHORITY SECTION:
jp.sharp.               86400   IN      NS      tg1.sharp.co.jp.
jp.sharp.               86400   IN      NS      ns1.sharp.co.jp.

;; Query time: 8 msec
;; SERVER: 37.209.192.4#53(37.209.192.4)
;; WHEN: 水 10月 28 08:17:09 JST 2020
;; MSG SIZE  rcvd: 94

2. jp.sharp NSの返答

一見、まともそうなCNAME返答なのだが、

$ dig corporate.jp.sharp @ns1.sharp.co.jp

; <<>> DiG 9.16.1-Ubuntu <<>> corporate.jp.sharp @ns1.sharp.co.jp
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 36779
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; WARNING: recursion requested but not available

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
; COOKIE: 79a32b64f37e38538843eda15f98aab2acc15786a900a00b (good)
;; QUESTION SECTION:
;corporate.jp.sharp.            IN      A

;; ANSWER SECTION:
corporate.jp.sharp.     300     IN      CNAME   ualsharp.hs.llnwd.net.

;; Query time: 28 msec
;; SERVER: 61.214.248.154#53(61.214.248.154)
;; WHEN: 水 10月 28 08:18:10 JST 2020
;; MSG SIZE  rcvd: 110

• DNS/gTLD/sharp/jp.sharp