Unable to resolve visitriverside.com

[Scott Baker]

I am unable to resolve visitriverside.com with my Bind 9 server. I don't 
have any problems resolving other domains, it just appears to be this host.

http://www.perturb.org/code/dns-tool.php?host=visitriverside.com&type=A

I can't resolve the name servers for this domain either. If I check my 
named.log I see it attempt to resolve and everything looks normal.

03-Mar-2009 08:58:00.505 client 65.182.224.20#42104: query: 
visitriverside.com IN A +

Nothing shows up in the error log... so I'm sort of stuck. Any ideas?

- Scott