No-IP.com - not free at all - just a 30 day demo

The so called "free" version of their service is suppose to allow you to have up to 3 dynamic dns names. You must  keep the account active otherwise it will delete after 30 days.

Doesn't seem to matter if you keep the account active or not. Even if you confirm when you receive an email notice. And when  verify and keep the name active it will delete your account after a couple of days.

I have verified this a few times and this will happen. So this what free service is/ They don't have to be honest.