You could try just putting http:// and seeing how it works, but I would recommend this.
This service is intended to redirect users from an old web address to a new one, nothing more really
I use FreeDNS, and use the .us.to domain
Whichever you do, don't addthis. This isn't part of a DNS entry. The port will be added by the connecting application
Sorry, my bad, it's been a while.