--- service: i.root-servers.net start-period: '2015-10-14T00:00:00Z' end-period: '2015-10-15T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4523073696 dns-udp-queries-received-ipv6: 342633003 dns-tcp-queries-received-ipv4: 24228843 dns-tcp-queries-received-ipv6: 517559 dns-udp-responses-sent-ipv4: 4457593407 dns-udp-responses-sent-ipv6: 342605242 dns-tcp-responses-sent-ipv4: 24220199 dns-tcp-responses-sent-ipv6: 523965