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I have a domain that needs to use second level subdomain. I am curious why when I have the @ A record and the blank A record a second level subdomain does not resolve. For example subsubdomain.subdomain.domain.com is not resolving to the root domain records. In this example if I add subdomain A record then that second level domain resolves.

Thanks for any clarification.

EDIT: This is using register.com as the DNS provider.

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This should actually work. You don't need to have an A resource record for sub.example.com for sub2.sub.example.com to work. Post your zone files. – joschi Jul 11 '10 at 6:41
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It might also be helpful if you told us what DNS software you are running. Don' be stingy with details. – John Gardeniers Jul 11 '10 at 7:00
@John Gardeniers - I edited my answer, sorry did not think the provider was necessary. I am not running DNS myself using Register.com. – Dustin Laine Jul 11 '10 at 17:04
in that case if your are having issues you really should contact the provider's support staff first, as they are in a much better position to help you than we are. – John Gardeniers Jul 11 '10 at 21:46
Ok, so I am taking it that this is not normal behavior of DNS. Make an answer and I will accept. – Dustin Laine Jul 19 '10 at 22:36
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if your are having issues you really should contact the provider's support staff first, as they are in a much better position to help you than we are -- from @John Gardeniers

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