Multisite DNS error for SOME sites.

I have installed multisite (this is the second time in the past two days) and am trying to create sites.

My main domain is:

I was able to create the subdomains: and the

But any other sites I create give me a DNS error: Site cannot be reached. Server DNS address could not be found.

Like I said I had multisite installed yesterday and was working for a while, but because I was having issues with domain mapping and some other things I deleted everything and started from scratch. This go around is not really going much better.