DNS/TCP/datacenter.ne.jpについて、ここに記述してください。

$ dig +tcp -t ns wakasa.jp @a.dns.jp

; <<>> DiG 9.12.1 <<>> +tcp -t ns wakasa.jp @a.dns.jp
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48977
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 3
;; WARNING: recursion requested but not available

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

;; AUTHORITY SECTION:
wakasa.jp.              86400   IN      NS      dns01.datacenter.ne.jp.
wakasa.jp.              86400   IN      NS      dns02.datacenter.ne.jp.

;; ADDITIONAL SECTION:
dns01.datacenter.ne.jp. 86400   IN      A       210.249.30.180
dns02.datacenter.ne.jp. 86400   IN      A       210.249.29.5

;; Query time: 4 msec
;; SERVER: 203.119.1.1#53(203.119.1.1)
;; WHEN: Mon Apr 23 13:32:11 JST 2018
;; MSG SIZE  rcvd: 124

tmaeno@u16:~$ dig +tcp -t ns wakasa.jp @dns01.datacenter.ne.jp.
;; Connection to 210.249.30.180#53(210.249.30.180) for wakasa.jp failed: timed out.
;; Connection to 210.249.30.180#53(210.249.30.180) for wakasa.jp failed: timed out.

; <<>> DiG 9.12.1 <<>> +tcp -t ns wakasa.jp @dns01.datacenter.ne.jp.
;; global options: +cmd
;; connection timed out; no servers could be reached
;; Connection to 210.249.30.180#53(210.249.30.180) for wakasa.jp failed: timed out.
tmaeno@u16:~$ dig +notcp -t ns wakasa.jp @dns01.datacenter.ne.jp.

; <<>> DiG 9.12.1 <<>> +notcp -t ns wakasa.jp @dns01.datacenter.ne.jp.
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 9082
;; flags: qr aa rd; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 3
;; WARNING: recursion requested but not available

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

;; ANSWER SECTION:
wakasa.jp.              300     IN      NS      dns01.datacenter.ne.jp.
wakasa.jp.              300     IN      NS      dns02.datacenter.ne.jp.

;; ADDITIONAL SECTION:
dns01.datacenter.ne.jp. 3600    IN      A       210.249.30.180
dns02.datacenter.ne.jp. 3600    IN      A       210.249.29.5

;; Query time: 13 msec
;; SERVER: 210.249.30.180#53(210.249.30.180)
;; WHEN: Mon Apr 23 13:32:54 JST 2018
;; MSG SIZE  rcvd: 124