--- version: rssac002v3 service: i.root-servers.net start-period: '2021-05-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5942446653 dns-udp-queries-received-ipv6: 921853317 dns-tcp-queries-received-ipv4: 462984849 dns-tcp-queries-received-ipv6: 120617632 dns-udp-responses-sent-ipv4: 4362859003 dns-udp-responses-sent-ipv6: 854862410 dns-tcp-responses-sent-ipv4: 365475501 dns-tcp-responses-sent-ipv6: 107918499