subdomain dowesnt resolve

[iCARus]

Hello.

I got one problem with one subdomain. This subdomain is for addon domain. If i type in browser http://www.subdomain.addondomain.com i get everything ok. If i type http://subdomain.addondomain.com i get DNS error.
This subdomain is not the only one for this addon domain, but all others works without any problems and all where made at the same time.

I've allready tried delete this subdomain in Cpanel and create new one..and is the same.

This is so wierd... if i try in shell lynx subdomain.addondomain.com i get everything ok.

So ...does anyone got any idea and HELP me out, why i got so much problem with this subdomain ? httpd.conf and files in /var/named are ok and identical like those subdomains that works.

Thanks.

[sv1]

Anyone have any idea on this? Thanks.

[DigitalN]

What is the domain name and subdomain ?

Can you post the dns zone and the apache <VirtualHost> for those.