Pi-hole is a Linux network-level advertisement and Internet tracker blocking application[2][3][4][5] which acts as a DNS sinkhole[6] (and optionally a DHCP server), intended for use on a private network.[1] It is designed for use on embedded devices with network capability, such as the Raspberry Pi,[3][7] but it can be used on other machines running Linux and cloud implementations.[6][8][9][10]