--- version: rssac002v3 service: i.root-servers.net start-period: '2021-12-05T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5030948237 dns-udp-queries-received-ipv6: 867134798 dns-tcp-queries-received-ipv4: 518314540 dns-tcp-queries-received-ipv6: 49037705 dns-udp-responses-sent-ipv4: 4301412879 dns-udp-responses-sent-ipv6: 810568326 dns-tcp-responses-sent-ipv4: 490850245 dns-tcp-responses-sent-ipv6: 34477946