--- version: rssac002v3 service: i.root-servers.net start-period: '2021-11-20T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5411940421 dns-udp-queries-received-ipv6: 825825794 dns-tcp-queries-received-ipv4: 516332058 dns-tcp-queries-received-ipv6: 49878925 dns-udp-responses-sent-ipv4: 4604480667 dns-udp-responses-sent-ipv6: 775145732 dns-tcp-responses-sent-ipv4: 484610469 dns-tcp-responses-sent-ipv6: 36253000