DNS Server not working

[baicunko]

Hello!
I've followed The perfect server Ubuntu 12.10 tutorial and installed ISPConfig 3.
I'm now trying to host my own DNS server but I've been unable to make it work.
My domain is ganganadores.cl and the IP of my computer is 200.74.52.32.
I've uploaded my DNS Record and Zone.
What I'm doing wrong?

Thanks!!
Edit 1n http://www.canyouseeme.org/ the port 53 is open.
IPTables from ISPCOnfig
iptables -S (ipv4)
-P INPUT ACCEPT
-P FORWARD ACCEPT
-P OUTPUT ACCEPT
-N fail2ban-dovecot-pop3imap
-N fail2ban-pureftpd
-N fail2ban-ssh
-A INPUT -p tcp -m multiport --dports 110,995,143,993 -j fail2ban-dovecot-pop3imap
-A INPUT -p tcp -m multiport --dports 21 -j fail2ban-pureftpd
-A INPUT -p tcp -m multiport --dports 22 -j fail2ban-ssh
-A fail2ban-dovecot-pop3imap -j RETURN
-A fail2ban-pureftpd -j RETURN
-A fail2ban-ssh -j RETURN

ip6tables -S (ipv6)
-P INPUT ACCEPT
-P FORWARD ACCEPT
-P OUTPUT ACCEPT

[falko]

What exactly is your problem?

[baicunko]

It's not working, if I dig for ganganadores.cl nothing will be shown. If I ping it the DNS server throws an error for not being able to get the IP.
WHat I'm doing wrong?
Edit: http://www.intodns.com/ganganadores.cl

[baicunko]

Fixed! There was a problem with my registrar
EDIT: Worked for about 10 minutes, then got down again.
I've posted here as well the new issue I have encountered.
Any suggestions will be appreciated
http://ubuntuforums.org/showthread.php?t=2123681