--- version: rssac002v3 service: i.root-servers.net start-period: '2021-01-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5544335175 dns-udp-queries-received-ipv6: 991967938 dns-tcp-queries-received-ipv4: 530008534 dns-tcp-queries-received-ipv6: 126698435 dns-udp-responses-sent-ipv4: 4356341863 dns-udp-responses-sent-ipv6: 881423259 dns-tcp-responses-sent-ipv4: 399458187 dns-tcp-responses-sent-ipv6: 117484657