Pi-hole
Used by 6 peoplepi-hole.net ↗

“And one last shout-out goes to Pi-Hole, which is a self-hosted DNS server with ad-blocking built in.”
Robert W Gehl Interview, Professor (Communication and Media Studies) · via Uses This 
“And one last shout-out goes to Pi-Hole, which is a self-hosted DNS server with ad-blocking built in.”