commandline session
$dig
; <> DiG 9.8.4-rpz2+rl005.12-P1 <>
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 44167
;; flags: qr rd ra; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;. IN NS
;; ANSWER SECTION:
. 17373 IN NS a.root-servers.net.
. 17373 IN NS b.root-servers.net.
. 17373 IN NS c.root-servers.net.
. 17373 IN NS d.root-servers.net.
. 17373 IN NS e.root-servers.net.
. 17373 IN NS f.root-servers.net.
. 17373 IN NS g.root-servers.net.
. 17373 IN NS h.root-servers.net.
. 17373 IN NS i.root-servers.net.
. 17373 IN NS j.root-servers.net.
. 17373 IN NS k.root-servers.net.
. 17373 IN NS l.root-servers.net.
. 17373 IN NS m.root-servers.net.
;; Query time: 53 msec
;; SERVER: 192.168.0.1#53(192.168.0.1)
;; WHEN: Thu Jun 20 20:40:07 2013
;; MSG SIZE rcvd: 228
$
$dig a.root-servers.net
; <> DiG 9.8.4-rpz2+rl005.12-P1 <> a.root-servers.net
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 27425
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;a.root-servers.net. IN A
;; ANSWER SECTION:
a.root-servers.net. 14389 IN A 198.41.0.4
;; Query time: 41 msec
;; SERVER: 192.168.0.1#53(192.168.0.1)
;; WHEN: Thu Jun 20 20:43:28 2013
;; MSG SIZE rcvd: 52
$
http://pluto.infoclub.in/wp-content/uploads/2013/06/dig.c