vistausss@vistausss-p6580nl:~$ dig sounl.org NS
; <<>> DiG 9.8.1-P1 <<>> sounl.org NS
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 30644
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;sounl.org. IN NS
;; Query time: 19 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Sun Mar 25 20:12:15 2012
;; MSG SIZE rcvd: 27
vistausss@vistausss-p6580nl:~$
vistausss@vistausss-p6580nl:~$ host www.sounl.org
Host www.sounl.org not found: 2(SERVFAIL)
vistausss@vistausss-p6580nl:~$