--- version: rssac002v3 service: i.root-servers.net start-period: '2021-04-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5039843934 dns-udp-queries-received-ipv6: 948061758 dns-tcp-queries-received-ipv4: 415311310 dns-tcp-queries-received-ipv6: 129998654 dns-udp-responses-sent-ipv4: 4215904569 dns-udp-responses-sent-ipv6: 895072794 dns-tcp-responses-sent-ipv4: 353395838 dns-tcp-responses-sent-ipv6: 127335929