--- service: i.root-servers.net start-period: '2013-06-16T00:00:00Z' end-period: '2013-06-17T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1695100966 dns-udp-queries-received-ipv6: 96600215 dns-tcp-queries-received-ipv4: 2968097 dns-tcp-queries-received-ipv6: 128013 dns-udp-responses-sent-ipv4: 1698006970 dns-udp-responses-sent-ipv6: 102763177 dns-tcp-responses-sent-ipv4: 3005691 dns-tcp-responses-sent-ipv6: 132955