--- service: i.root-servers.net start-period: '2015-11-15T00:00:00Z' end-period: '2015-11-16T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4252267453 dns-udp-queries-received-ipv6: 312654178 dns-tcp-queries-received-ipv4: 28635133 dns-tcp-queries-received-ipv6: 721896 dns-udp-responses-sent-ipv4: 4198966242 dns-udp-responses-sent-ipv6: 317846794 dns-tcp-responses-sent-ipv4: 28585623 dns-tcp-responses-sent-ipv6: 723386