>>681
$ dig ns bbn.2ch.net @ns1.nttec.com

; <<>> DiG 9.8.3-P1 <<>> ns bbn.2ch.net @ns1.nttec.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 64332
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;bbn.2ch.net. IN NS

;; AUTHORITY SECTION:
bbn.2ch.net. 300 IN NS a.bbn.2ch.net.

;; Query time: 139 msec
;; SERVER: 206.223.144.254#53(206.223.144.254)
;; WHEN: Fri Mar 28 09:38:17 2014
;; MSG SIZE rcvd: 45

a.bbn.2ch.net X
a.ns.bbn.2ch.net O
Please rewrite it. Jim-san.