I can use my own domain for free and it works just fine with IPv4 and IPv6.
I'm using it with am apple airport router and it's working fine
No-IP - Dynamic DNS and Managed DNS Provider
PriceCute - Keep up with your competition's pricing on Amazon
DNS-O-Matic - DNS-O-Matic (dnsomatic.
GlassIt.co - Find discounts, without invasion of your privacy. Download Glass It Price Tracker mobile app or browser extension πΊπΈ
iWantMyName - Register your own custom domain for web applications, email, blog or website such as Google Apps...
Price Tracker by Relbis Labs - Price Tracker is a command-line tool for monitoring the prices of productsFeaturesTracking prices and availability of products.Tracking Amazon Kindle books.Displaying products information in a terminal.Exporting data into Excel and YAML files.