--- service: i.root-servers.net start-period: '2015-08-07T00:00:00Z' end-period: '2015-08-08T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5369279415 dns-udp-queries-received-ipv6: 264152550 dns-tcp-queries-received-ipv4: 16430421 dns-tcp-queries-received-ipv6: 283834 dns-udp-responses-sent-ipv4: 5317453690 dns-udp-responses-sent-ipv6: 266220895 dns-tcp-responses-sent-ipv4: 16231515 dns-tcp-responses-sent-ipv6: 290700