DNS prob - dig process

Dear MoDs,

I have several doubts regarding query domain using DIG process..

below is my dig process:-

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dns-dual# /usr/bin/dig @dns-dual.surfweb.net.my my soa

; <<>> DiG 9.3.0 <<>> @dns-dual.surfweb.net.my my soa
;; global options: printcmd
;; connection timed out; no servers could be reached

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after that, i dig using dns-dual IPv6 like below:-

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dns-dual# /usr/bin/dig @2001:328:1000:1::13 my soa

; <<>> DiG 9.3.0 <<>> @2001:328:1000:1::13 my soa
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 28188
;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 0

;; QUESTION SECTION:
;my. IN SOA

;; ANSWER SECTION:
my. 60 IN SOA dns-test.surfweb.net.my. hostmaster.mynic.net.my. 605300001 120 120 604800 86400

;; AUTHORITY SECTION:
my. 60 IN NS dns-test.surfweb.net.my.
my. 60 IN NS dns2-test.surfweb.net.my.

;; Query time: 21 msec
;; SERVER: 2001:328:1000:1::13#53(2001:328:1000:1::13)
;; WHEN: Thu Mar 2 17:44:45 2006
;; MSG SIZE rcvd: 124

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The problems are:

i) Why i cant reach result using domain name, rather IPv6 add?
ii) Using IPv6 address, the SOA is not same with SOA "zone file". Is there any changes that I should alert with?

Regards,
Unknown

It told you why - connection timed out; no servers could be reached. Check out this How to on dig.