nslookup is work but dig is not work.

[HeePok Lee]

Hi all!
I am managing DNS on Solaris.
By the way, 
When I do nslookup command on my network (203.248.240.x), it work.

> server ns.pubnetplus.ne.kr
Default Server:  ns.pubnetplus.ne.kr
Address:  210.220.16.7

> www.cisco.com.
Server:  ns.pubnetplus.ne.kr
Address:  210.220.16.7

Non-authoritative answer:
Name:    www.cisco.com
Address:  198.133.219.25


But when I do dig command on my same network, it not work.

[root cidr]# dig @ns.pubnetplus.ne.kr www.cisco.com a

; <<>> DiG 8.2 <<>> @ns.pubnetplus.ne.kr www.cisco.com a
; (1 server found)
;; res options: init recurs defnam dnsrch
;; res_nsend to server ns.pubnetplus.ne.kr  210.220.16.7: Connection timed out

What is difference of these commands?
Why does not dig command work?



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