Quad9 shine mai warwarewar DNS na jama'a na duniya wanda ke da nufin kare masu amfani daga malware da phishing. Quad9 yana aiki ne daga Gidauniyar Quad9, wata fa'ida ta jama'a ta Switzerland, gidauniyar ba don riba tare da manufar inganta sirri da amincin masu amfani da Intanet, mai hedikwata a Zurich. Ita ce kaɗai mai warware matsalar jama'a ta duniya wacce ake sarrafa ba don riba ba, a cikin fa'idar jama'a. Quad9 gabaɗaya yana ƙarƙashin dokar keɓantawa na Switzerland, kuma gwamnatin Switzerland ta ƙaddamar da wannan kariyar ga masu amfani da Quad9 a duk faɗin duniya, ba tare da la'akari da ɗan ƙasa ko ƙasar zama ba. Quad9 a halin yanzu shine kadai mai warware koma baya na duniya wanda ba ya ƙarƙashin dokar Amurka, kamar yadda sauran kowannensu yana zaune a yankin San Francisco Bay kuma Kotun Tarayyar Amurka ta gundumar Arewacin California ta Amurka.