Blocking two sites, via time out, all other sites work.

Ok, so I own two websites, www.ddbellenterprises.com and www.brothersreconciliation.org. I am on them often doing updates to software, posts, etc.

When on the COX network, I am unable to reach ANY page on these two sites.  I get this:

The connection has timed out

The server at www.ddbellenterprises.com is taking too long to respond.

    The site could be temporarily unavailable or too busy. Try again in a few moments.
    If you are unable to load any pages, check your computer’s network connection.
    If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web.

If I take it off of direct connect or wifi, and use another wifi system all works well, but on COX it won't.  I have factory reset the router, still happening.

I contact CS via phone and was giving another number and that guy blew me off.

This is an issue with COX and not my computer or my browser, as if I get COX out of the loop it works fine.  Any ideas?