--- service: i.root-servers.net start-period: '2016-05-07T00:00:00Z' end-period: '2016-05-08T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4839620443 dns-udp-queries-received-ipv6: 397758096 dns-tcp-queries-received-ipv4: 47482555 dns-tcp-queries-received-ipv6: 868746 dns-udp-responses-sent-ipv4: 4797004263 dns-udp-responses-sent-ipv6: 402725403 dns-tcp-responses-sent-ipv4: 46799052 dns-tcp-responses-sent-ipv6: 876231