Subdomain access?

[usa2k]

voipwelcome.com is already a pretty long URL . . .
BTW: Expiration Date: 07-apr-2010

Also being a subdomain makes it painfully obvious there are many.
Google will start revealing all the co-competitors.

Non-branded Interface for your clients
The purpose of this is to offer your end users the ability to login to a non-branded website to consult CDR, Balance and other information regarding their account. You can also brand it with your own sub domain (eg: voipinterface.mydomain.com) with your own header and footer images..

Is Voip.ms disguising their domain as the mydomain.com part of that example? If I knew what domain they used, then I could site examples of the many subdomains.