--- version: rssac002v3 service: i.root-servers.net start-period: '2021-06-22T00:00:00Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5085857825 dns-udp-queries-received-ipv6: 947509616 dns-tcp-queries-received-ipv4: 444893587 dns-tcp-queries-received-ipv6: 114936326 dns-udp-responses-sent-ipv4: 4404713597 dns-udp-responses-sent-ipv6: 923127792 dns-tcp-responses-sent-ipv4: 385137043 dns-tcp-responses-sent-ipv6: 108075038