--- version: rssac002v3 service: i.root-servers.net start-period: '2021-02-10T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5357718537 dns-udp-queries-received-ipv6: 956600484 dns-tcp-queries-received-ipv4: 515486162 dns-tcp-queries-received-ipv6: 137728876 dns-udp-responses-sent-ipv4: 4266679456 dns-udp-responses-sent-ipv6: 863980641 dns-tcp-responses-sent-ipv4: 373668491 dns-tcp-responses-sent-ipv6: 124564158