--- version: rssac002v3 service: i.root-servers.net start-period: '2021-04-22T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5414415402 dns-udp-queries-received-ipv6: 963833800 dns-tcp-queries-received-ipv4: 488992704 dns-tcp-queries-received-ipv6: 131741414 dns-udp-responses-sent-ipv4: 4634466097 dns-udp-responses-sent-ipv6: 913438383 dns-tcp-responses-sent-ipv4: 430582428 dns-tcp-responses-sent-ipv6: 124741764