--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-13T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4325006098 dns-udp-queries-received-ipv6: 787868060 dns-tcp-queries-received-ipv4: 412517942 dns-tcp-queries-received-ipv6: 103579551 dns-udp-responses-sent-ipv4: 3846613626 dns-udp-responses-sent-ipv6: 779813611 dns-tcp-responses-sent-ipv4: 370825682 dns-tcp-responses-sent-ipv6: 100791276