The domains you listed are indeed different....they are all subdomains, and iSilo probably sees these as seperate domains, although they are probably on the same server. The routing for subdomains is a little different, and I think the flow leaves the initial domain to do so. I believe (guessing, really), that iSilo wants to start at a domain address and work within that, not jump out. Maybe iSilo can pop in here and explain further, but I think it's excluding those because they are not technically of the same domain.