--- version: rssac002v3 service: i.root-servers.net start-period: '2021-07-31T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4344504895 dns-udp-queries-received-ipv6: 902694776 dns-tcp-queries-received-ipv4: 474702769 dns-tcp-queries-received-ipv6: 83506514 dns-udp-responses-sent-ipv4: 3903932362 dns-udp-responses-sent-ipv6: 921006727 dns-tcp-responses-sent-ipv4: 444054486 dns-tcp-responses-sent-ipv6: 83508075