Cloudflare 1.1.1.1 1.0.0.1Google Public DNS 8.8.8.8 8.8.4.4Quad9(IBM Security、Packet Clearing House（PCH）、Global Cyber Alliance（GCA）) 9.9.9.9Cisco OpenDNS 208.67.222.222 (resolver1.opendns.com) 208.67.220.220 (resolver2.opendns.com) 2…