--- version: rssac002v3 service: i.root-servers.net start-period: '2021-01-16T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4863301659 dns-udp-queries-received-ipv6: 877175252 dns-tcp-queries-received-ipv4: 468619194 dns-tcp-queries-received-ipv6: 120964037 dns-udp-responses-sent-ipv4: 3817254565 dns-udp-responses-sent-ipv6: 795000426 dns-tcp-responses-sent-ipv4: 342138638 dns-tcp-responses-sent-ipv6: 108383080