--- service: i.root-servers.net start-period: '2013-10-27T00:00:00Z' end-period: '2013-10-28T00:00:09Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1827528854 dns-udp-queries-received-ipv6: 108346663 dns-tcp-queries-received-ipv4: 3597363 dns-tcp-queries-received-ipv6: 191643 dns-udp-responses-sent-ipv4: 1887966413 dns-udp-responses-sent-ipv6: 114596094 dns-tcp-responses-sent-ipv4: 3565047 dns-tcp-responses-sent-ipv6: 199268