--- service: i.root-servers.net start-period: '2013-10-09T00:00:00Z' end-period: '2013-10-10T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2430423045 dns-udp-queries-received-ipv6: 128682181 dns-tcp-queries-received-ipv4: 4109278 dns-tcp-queries-received-ipv6: 130056 dns-udp-responses-sent-ipv4: 2517782778 dns-udp-responses-sent-ipv6: 137218612 dns-tcp-responses-sent-ipv4: 4156308 dns-tcp-responses-sent-ipv6: 149826