## page was renamed from watchNS/greensys.ne.jp
watchNS/greensys.ne.jpについて、ここに記述してください。

JPサーバーが余計なAレコードをつけてくることが害であることを示す実例：

{{{
%dig -t ns greensys.ne.jp @a.dns.jp                            ~/dnsq/0103

; <<>> DiG 9.11.2 <<>> -t ns greensys.ne.jp @a.dns.jp
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 9836
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 5, ADDITIONAL: 30
;; WARNING: recursion requested but not available

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

;; AUTHORITY SECTION:
greensys.ne.jp.		86400	IN	NS	ns1.xserver.jp.
greensys.ne.jp.		86400	IN	NS	dns1.greensys.ne.jp.
greensys.ne.jp.		86400	IN	NS	ns3.xserver.jp.
greensys.ne.jp.		86400	IN	NS	dns2.greensys.ne.jp.
greensys.ne.jp.		86400	IN	NS	ns2.xserver.jp.

;; ADDITIONAL SECTION:
ns1.xserver.jp.		86400	IN	A	219.94.200.165
ns1.xserver.jp.		86400	IN	A	219.94.200.166
ns1.xserver.jp.		86400	IN	A	219.94.200.167
ns1.xserver.jp.		86400	IN	A	219.94.200.168
ns1.xserver.jp.		86400	IN	A	219.94.200.169
ns1.xserver.jp.		86400	IN	A	219.94.200.170
ns1.xserver.jp.		86400	IN	A	219.94.200.246
ns1.xserver.jp.		86400	IN	A	219.94.200.70
ns1.xserver.jp.		86400	IN	A	219.94.200.71
ns1.xserver.jp.		86400	IN	A	219.94.200.164
ns2.xserver.jp.		86400	IN	A	157.112.182.225
ns2.xserver.jp.		86400	IN	A	210.188.201.61
ns2.xserver.jp.		86400	IN	A	210.188.201.246
ns2.xserver.jp.		86400	IN	A	157.112.182.221
ns2.xserver.jp.		86400	IN	A	157.112.182.222
ns2.xserver.jp.		86400	IN	A	157.112.182.223
ns2.xserver.jp.		86400	IN	A	157.112.182.224
ns3.xserver.jp.		86400	IN	A	219.94.200.176
ns3.xserver.jp.		86400	IN	A	219.94.200.177
ns3.xserver.jp.		86400	IN	A	219.94.200.247
ns3.xserver.jp.		86400	IN	A	219.94.200.72
ns3.xserver.jp.		86400	IN	A	219.94.200.73
ns3.xserver.jp.		86400	IN	A	219.94.200.171
ns3.xserver.jp.		86400	IN	A	219.94.200.172
ns3.xserver.jp.		86400	IN	A	219.94.200.173
ns3.xserver.jp.		86400	IN	A	219.94.200.174
ns3.xserver.jp.		86400	IN	A	219.94.200.175
dns1.greensys.ne.jp.	86400	IN	A	182.171.248.210
dns2.greensys.ne.jp.	86400	IN	A	202.212.80.146

;; Query time: 6 msec
;; SERVER: 203.119.1.1#53(203.119.1.1)
;; WHEN: Wed Jan 10 07:35:59 JST 2018
;; MSG SIZE  rcvd: 607

}}}

こっちはもっとまずい。
{{{
%dig +noedns -t ns greensys.ne.jp @a.dns.jp                    ~/dnsq/0103

; <<>> DiG 9.11.2 <<>> +noedns -t ns greensys.ne.jp @a.dns.jp
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 51917
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 5, ADDITIONAL: 17
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;greensys.ne.jp.			IN	NS

;; AUTHORITY SECTION:
greensys.ne.jp.		86400	IN	NS	dns2.greensys.ne.jp.
greensys.ne.jp.		86400	IN	NS	ns1.xserver.jp.
greensys.ne.jp.		86400	IN	NS	dns1.greensys.ne.jp.
greensys.ne.jp.		86400	IN	NS	ns3.xserver.jp.
greensys.ne.jp.		86400	IN	NS	ns2.xserver.jp.

;; ADDITIONAL SECTION:
ns1.xserver.jp.		86400	IN	A	219.94.200.164
ns1.xserver.jp.		86400	IN	A	219.94.200.165
ns1.xserver.jp.		86400	IN	A	219.94.200.166
ns1.xserver.jp.		86400	IN	A	219.94.200.167
ns1.xserver.jp.		86400	IN	A	219.94.200.168
ns1.xserver.jp.		86400	IN	A	219.94.200.169
ns1.xserver.jp.		86400	IN	A	219.94.200.170
ns1.xserver.jp.		86400	IN	A	219.94.200.246
ns1.xserver.jp.		86400	IN	A	219.94.200.70
ns1.xserver.jp.		86400	IN	A	219.94.200.71
ns2.xserver.jp.		86400	IN	A	157.112.182.223
ns2.xserver.jp.		86400	IN	A	157.112.182.224
ns2.xserver.jp.		86400	IN	A	157.112.182.225
ns2.xserver.jp.		86400	IN	A	210.188.201.61
ns2.xserver.jp.		86400	IN	A	210.188.201.246
ns2.xserver.jp.		86400	IN	A	157.112.182.221
ns2.xserver.jp.		86400	IN	A	157.112.182.222

;; Query time: 6 msec
;; SERVER: 203.119.1.1#53(203.119.1.1)
;; WHEN: Wed Jan 10 08:31:47 JST 2018
;; MSG SIZE  rcvd: 404
}}}