Yes, a DNSthingy [http://www.dnsthingy.com/r/37870001] (the consumer-facing name
is Netbender). It’s an (ASUS) router running some custom firmware (based on
asuswrt-merlin [https://github.com/RMerl/asuswrt-merlin/]) that does cool stuff
using DNS, such as:
* blocking ads
* blocking malware, phishing, and tracking
* virtual relocation for viewing