Whilst a good choice for many small business users and larger households/estates often the use of these devices can be complex for the everyday user, I myself use pfsense running on a pi-hole hardwall and this surfices, being that its relatively cheap and with a little knowledge is simple to setup and blocks any domain or range required. (note if you are a parent looking wanting block a domain from your children I can help advise you in this aspect)
All to often do I see posts on the www pertaining to how poorly moderated it is, and how much material their children are exposed to, when in reality it should be the parents supervising what they watch, setting limits on access to the www. "which can be done via the router settings"
Alternatively you can use:
OpenDNS Home is a free internet based parental control solution which allows parents to manage web access on every device that accesses the Internet on a home network including, wired and wireless computers and laptops, network enabled game systems and internet enabled wireless devices such as IPods and Ipads
If you are interested in the pi-hole hardwall I can walk you through the process, by far this is the cheaper and better option, alternatively you can look here