watchNS/on-jin.comについて、ここに記述してください。

$ dnsq a on-jin.com a.gtld-servers.net

1 on-jin.com:
128 bytes, 1+0+5+0 records, response, noerror
query: 1 on-jin.com
authority: on-jin.com 172800 NS ns1.xserver.jp
authority: on-jin.com 172800 NS ns2.xserver.jp
authority: on-jin.com 172800 NS ns3.xserver.jp
authority: on-jin.com 172800 NS ns4.xserver.jp
authority: on-jin.com 172800 NS ns5.xserver.jp

tmaeno@tm:~$ dnsq a on-jin.com ns1.xserver.jp

1 on-jin.com:
44 bytes, 1+1+0+0 records, response, authoritative, noerror
query: 1 on-jin.com
answer: on-jin.com 86400 A 183.90.242.46

$ dnsname 183.90.242.46

sv2145.xserver.jp