--- version: rssac002v3 service: i.root-servers.net start-period: '2021-04-24T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4780159174 dns-udp-queries-received-ipv6: 842169808 dns-tcp-queries-received-ipv4: 482576801 dns-tcp-queries-received-ipv6: 115745943 dns-udp-responses-sent-ipv4: 4190697214 dns-udp-responses-sent-ipv6: 820777089 dns-tcp-responses-sent-ipv4: 430268927 dns-tcp-responses-sent-ipv6: 110147810