--- service: i.root-servers.net start-period: '2016-05-14T00:00:00Z' end-period: '2016-05-15T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 10006484840 dns-udp-queries-received-ipv6: 650509978 dns-tcp-queries-received-ipv4: 28757024 dns-tcp-queries-received-ipv6: 890277 dns-udp-responses-sent-ipv4: 9965834034 dns-udp-responses-sent-ipv6: 657458665 dns-tcp-responses-sent-ipv4: 28365760 dns-tcp-responses-sent-ipv6: 896705