MoinQ: watch-server/jpdns.jp

watch-server/jpdns.jpについて、ここに記述してください。

1. ns1.jpdns.jp

公開リゾルバーかと思わせるが、それだけではない。

%dig -t ns qmail.jp @ns1.jpdns.jp

; <<>> DiG 9.9.0 <<>> -t ns qmail.jp @ns1.jpdns.jp
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 43492
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

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

;; ANSWER SECTION:
qmail.jp.               86159   IN      NS      a.ns.qmail.jp.

;; Query time: 21 msec
;; SERVER: 210.239.8.10#53(210.239.8.10)
;; WHEN: Wed May 27 13:17:56 2015
;; MSG SIZE  rcvd: 56

; <<>> DiG 9.9.0 <<>> -t ns 345.co.jp @ns1.jpdns.jp
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 29008
;; flags: qr aa rd; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 2
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;345.co.jp.                     IN      NS

;; ANSWER SECTION:
345.co.jp.              3600    IN      NS      ns2.jpdns.jp.
345.co.jp.              3600    IN      NS      ns1.jpdns.jp.

;; ADDITIONAL SECTION:
ns2.jpdns.jp.           3600    IN      A       211.2.156.225
ns1.jpdns.jp.           3600    IN      A       210.239.8.10

;; Query time: 21 msec
;; SERVER: 210.239.8.10#53(210.239.8.10)
;; WHEN: Wed May 27 13:22:06 2015
;; MSG SIZE  rcvd: 101

2. ns2.jpdns.jp

%dig -t ns qmail.jp @ns2.jpdns.jp

; <<>> DiG 9.9.0 <<>> -t ns qmail.jp @ns2.jpdns.jp
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 32347
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;qmail.jp.                      IN      NS

;; Query time: 21 msec
;; SERVER: 211.2.156.225#53(211.2.156.225)
;; WHEN: Wed May 27 13:20:41 2015
;; MSG SIZE  rcvd: 26