Quad9 ndi njira yapadziko lonse lapansi yosinthira anthu DNS yomwe ikufuna kuteteza ogwiritsa ntchito ku pulogalamu yaumbanda ndi chinyengo. Quad9 imayendetsedwa ndi Quad9 Foundation, maziko aku Swiss opindulitsa anthu, osachita phindu ndi cholinga chokweza zinsinsi ndi chitetezo cha pa intaneti kwa ogwiritsa ntchito intaneti, omwe ali ku Zurich. Ndilokhalo lokhalo padziko lonse lapansi lomwe limagwira ntchito mosapindulitsa, pothandiza anthu. Quad9 ili pansi pa malamulo achinsinsi a Swiss, ndipo boma la Switzerland limakulitsa chitetezo chalamulocho kwa ogwiritsa ntchito a Quad9 padziko lonse lapansi, posatengera nzika kapena dziko lomwe mukukhala. Quad9 pakadali pano ndiyo yokhayo padziko lonse lapansi yothetsa vuto lomwe silitsatira malamulo a United States, popeza ena onse ali ku San Francisco Bay Area ndipo amalamulidwa ndi Northern District of California US Federal Court.