So you can run your own DNS master server and rely on HE for availability when your server is down or even give preference to the slave DNS, so your users can get the results quick.
So I decided not to go with any free providers anymore and get my own domain instead. So far no regret.
https://news.ycombinator.com/item?id=14856277#14858784
>opie34: A friend and I put together a free dynamic DNS service [1] offering cool custom domains aimed at the Raspberry Pi community (and similar hardware hackers.) It's not strictly a hardware project, but it's a crucial building block for any network-enabled Raspberry Pi project, and we'd love your feedback.
The problem with them however was that they did rack up the price over time and not just a little bit.
In 2006, I had to pay $9.95 for their yearly "Pro" offering. In 2008 the deal became "only $23.00 for 2 years", humm OK. Two years later in 2010 it was "$30 for 2 years", in 2012 the bill became $40.00 and when 2016 came the price was upgraded again... (yet again without any other benefits from a customer point of view)
That's when I figured that it was too much and moved over to he.net. Which still is free and still works great for the dynamic DNS needed.
For static DNS services I also happen to run my own DNS servers, if needed then the he.net services could be moved over to their, but not seeing the need for now.
The DNS servers that I happen to run have nothing to do with dyn's pricing, I was already running those and they are for more serious needs as just dynamic DNS.
Next, I wanted to become independent. Now I can choose my DNS hoster or do it myself, but as long as I keep my domain the migration is easy. (And the custom domain looks much better ;-)
So I have no hard feelings against dyn.com as it was completely okay to stop their free service. Nevertheless, I did not want to be in the same situation again.