DNS-Trick has a 14-day free trial for you to try its service. This is rather uncommon, as most organizations offer 7 days only (in duration, not in food). You can give every feature of theirs a try, except the Dynamic DNS tool. DNS-Trick encourages you to try their service for free first, so you can have a more educated picture about their offerings.
14-Day Free Trial of DNS-Trick
For a free experience, register to DNS-Trick and set your smart DNS up. For two weeks, you are welcome to try anything you wish out – their service is highly specialized for UK and US streaming. At the end of these 14 days, you can either choose to upgrade your account to be a subscriber, or cancel it altogether.