--- version: rssac002v3 service: i.root-servers.net start-period: '2021-05-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5276988366 dns-udp-queries-received-ipv6: 937585385 dns-tcp-queries-received-ipv4: 454003889 dns-tcp-queries-received-ipv6: 124291871 dns-udp-responses-sent-ipv4: 4265315278 dns-udp-responses-sent-ipv6: 856660853 dns-tcp-responses-sent-ipv4: 357694587 dns-tcp-responses-sent-ipv6: 112741530