--- version: rssac002v3 service: i.root-servers.net start-period: '2021-05-06T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5360687810 dns-udp-queries-received-ipv6: 998228339 dns-tcp-queries-received-ipv4: 485555692 dns-tcp-queries-received-ipv6: 137895057 dns-udp-responses-sent-ipv4: 4649631952 dns-udp-responses-sent-ipv6: 876988674 dns-tcp-responses-sent-ipv4: 390269731 dns-tcp-responses-sent-ipv6: 114411401