Using free subdomains to circumvent web filtering systems

(I was told that this was the place to ask this by someone from Webmasters, if I've got it wrong again please give me a chance!)

I'm running a personal proxy service for the use of myself and some of my friends. Currently, in order to circumvent filtering restrictions I've signed up with a free web host to use their subdomain and that works for now, but it's only a matter of time before that subdomain is blacklisted. Is there any way I can use the subdomains provided by a free DNS/subdomain provider (such as http://ift.tt/H8bsNl) as fully featured domains to keep my site unblocked?