MoinQ:

DNSSEC/dnssec-failed.org/IIJについて、ここに記述してください。

これはオープンリゾルバーか。

$ dig +dnssec dnssec-failed.org @202.232.2.39

; <<>> DiG 9.11.1-P3 <<>> +dnssec dnssec-failed.org @202.232.2.39
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 18270
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags: do; udp: 4096
;; QUESTION SECTION:
;dnssec-failed.org.             IN      A

;; ANSWER SECTION:
dnssec-failed.org.      6424    IN      A       69.252.80.75
dnssec-failed.org.      6424    IN      RRSIG   A 5 2 7200 20170820135541 20170809135041 3102 dnssec-failed.org. DR082+VURJkoeJATGvuqD4PgrrdmUj7AcKxlixQE4HO8ifvvBmgGK17y pK5PiieG9ahXh0IGF4FDlRJr381lU6uG57Al1Rklq072bOogaWxfgJST ktlyCNWVrh3jzUX7A0FpIvtKst0n3yuHYMw8N9ARHWCCYk+XRiRZrB0V 824=

;; Query time: 7 msec
;; SERVER: 202.232.2.39#53(202.232.2.39)
;; WHEN: Fri Aug 11 19:15:15 JST 2017
;; MSG SIZE  rcvd: 239

$ dig -x 202.232.2.39

; <<>> DiG 9.11.1-P3 <<>> -x 202.232.2.39
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 62259
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;39.2.232.202.in-addr.arpa.     IN      PTR

;; ANSWER SECTION:
39.2.232.202.in-addr.arpa. 36000 IN     PTR     ns5.iij.ad.jp.

;; Query time: 527 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Fri Aug 11 19:15:33 JST 2017
;; MSG SIZE  rcvd: 81

ns5.iij.ad.jp.          86400   IN      A       202.232.2.39