--- version: rssac002v3 service: i.root-servers.net start-period: '2021-01-11T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5462059443 dns-udp-queries-received-ipv6: 980625251 dns-tcp-queries-received-ipv4: 525573589 dns-tcp-queries-received-ipv6: 122528230 dns-udp-responses-sent-ipv4: 4302482432 dns-udp-responses-sent-ipv6: 875816223 dns-tcp-responses-sent-ipv4: 405491603 dns-tcp-responses-sent-ipv6: 113909635