--- version: rssac002v3 service: i.root-servers.net start-period: '2021-12-07T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5871531315 dns-udp-queries-received-ipv6: 1298835424 dns-tcp-queries-received-ipv4: 612747608 dns-tcp-queries-received-ipv6: 69147178 dns-udp-responses-sent-ipv4: 5043054767 dns-udp-responses-sent-ipv6: 1186635497 dns-tcp-responses-sent-ipv4: 579729691 dns-tcp-responses-sent-ipv6: 59451055