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